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Publication numberUSRE42391 E1
Publication typeGrant
Application numberUS 10/366,531
Publication dateMay 24, 2011
Filing dateFeb 12, 2003
Priority dateDec 1, 1998
Fee statusPaid
Also published asCA2352809A1, CA2352809C, EP1135080A1, EP1135080A4, EP1135080B1, EP2311403A1, US6174167, US6283754, WO2000032134A1
Publication number10366531, 366531, US RE42391 E1, US RE42391E1, US-E1-RE42391, USRE42391 E1, USRE42391E1
InventorsPeter S. Wöhrle
Original AssigneeWoehrle Peter S
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Bioroot endosseous implant
US RE42391 E1
Abstract
The present invention relates to novel endosseous implants, which are designed so that the areas intended for bone soft tissue apposition exhibit a scalloped appearance, including both convex and concave patterns, to follow the naturally occurring bone morphology. Thus, the disclosed implants provide attachment possibilities for both bone and soft tissue, thereby effecting both hard- and soft-tissue preservation.
REEXAMINATION RESULTS
The questions raised in reexamination proceeding No. 90/007,836, filed Dec. 2, 2005, have been considered, and the results thereof are reflected in this reissue patent which constitutes the reexamination certificate required by 35 U.S.C. 307 as provided in 37 CFR 1.570(e) for ex parte reexaminations, or the reexamination certificate required by 35 U.S.C. 316 as provided in 37 CFR 1.997(e) for inter partes reexaminations.
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Claims(106)
1. An endosseous dental implant, comprising:
a threaded shaft made from a biocompatible material, said shaft having a distal end and a proximal end;
an abutment-implant interface disposed towards the proximal end of said shaft; and
a bone-tissue apposition surface formed on said shaft and having an edge disposed adjacent to said abutment-implant interface, said edge of the bone-tissue apposition surface including at least one peak and trough configured to approximate the physiological contours of naturally occurring bone-tissue morphology and wherein said bone-tissue apposition surface comprises at least one of a roughened surface, a textured surface, or an applied biologic modifier that extends to said edge but does not extend beyond said edge.
2. The endosseous dental implant according to claim 1, wherein said edge of the bone-tissue apposition surface has a non-planar appearance.
3. The endosseous dental implant according to claim 2, wherein said edge of the bone tissue apposition surface has a highest point and a lowest point and the highest pointspoint of said bone-tissue apposition surface is configured to substantially alignsalign with the interproximal areas of the bone-tissue, and wherein the lowest pointspoint of said bone-tissue apposition surface is configured to substantially alignsalign with the buccal area of the bone-tissue.
4. The endosseous dental implant according to claim 1 further comprising:
a soft-tissue apposition surface formed on said shaft and disposed between said edge of the bone-tissue apposition surface and said abutment-implant interface, said soft-tissue apposition surface being configured to promote, enhance or maintain soft-tissue growth or apposition and including an edge with at least one peak and trough configured to approximate the physiological contours of naturally occurring soft-tissue morphology.
5. The endosseous dental implant according to claim 1 further comprising:An endosseous dental implant, comprising:
a shaft made from a biocompatible material, said shaft having a distal end and a proximal end;
an abutment-implant interface disposed towards the proximal end of said shaft;
a bone-tissue apposition surface formed on said shaft and having a boundary disposed adjacent to said abutment-implant interface, said boundary of said bone-tissue apposition surface including at least one peak and trough configured to approximate the physiological contours of naturally occurring bone-tissue morphology; and
a means for connecting an abutment to said abutment-implant interface for use in a two-stage procedure;
wherein said bone-tissue apposition surface comprises at least one of a roughened surface, a textured surface, or an applied biologic modifier that extends to said boundary but does not extend beyond said boundary.
6. The endosseous dental implant according to claim 5, wherein said abutment-implant interface has a substantially planar upper surface approximately 90° to the longitudinal axis of said shaft, and wherein said planar upper surface substantially surrounds said means for connecting.
7. The endosseous dental implant according to claim 5, wherein said abutment-implant interface has a contoured upper surface, and wherein said contoured upper surface substantially surrounds said means for connecting.
8. The endosseous dental implant according to claim 7, further comprising an abutment wherein a lower surface of the abutment substantially abuts against said contoured upper surface, thereby providing improved lateral support.
9. The endosseous dental implant according to claim 1, further comprising:
an abutment permanently attached to said abutment-implant interface for use in a one-stage procedure.
10. The endosseous dental implant according to claim 9, wherein said shaft and said abutment are constructed from a single piece of material.
11. The endosseous dental implant according to claim 9, wherein said abutment has a substantially planar upper surface approximately 90° to the longitudinal axis of said shaft and wherein said planar upper surface substantially surrounds a chimney.
12. The endosseous dental implant according to claim 9, wherein said abutment has a contoured upper surface and wherein said contoured upper surface substantially surrounds a chimney.
13. A one-stage endosseous dental implant, comprising:
a threaded shaft made from a biocompatible material, said shaft having a distal end and a proximal end;
a bone-tissue apposition surface formed on said shaft and comprising an edge disposed adjacent to saidan abutment-implant interface, said edge of said bone-tissue apposition surface including at least one peak and trough configured to approximate the physiological contours of naturally occurring bone-tissue morphology; and
an abutment permanently attached to the proximal end of said shaft;
wherein said bone-tissue apposition surface comprises at least one of a roughened surface, a textured surface, or an applied biologic modifier that extends to said edge but does not extend beyond said edge.
14. The one-stage endosseous dental implant according to claim 13, wherein said abutment has a substantially planar upper surface approximately 90° to the longitudinal axis of said shaft, and wherein said planar upper surface substantially surrounds a chimney.
15. The one-stage endosseous dental implant according to claim 13, wherein said abutment has a contoured upper surface and wherein said contoured upper surface substantially surrounds a chimney.
16. A two-stage endosseous dental implant system, comprising:
a shaft made from a biocompatible material, said shaft having a distal end and a proximal end;
a bone-tissue apposition surface formed on said shaft and an edge disposed adjacent to saidan abutment-implant interface, said edge of said bone-tissue apposition surface including at least one peak and trough configured to approximate the physiological contours of naturally occurring bone-tissue morphology, wherein said bone-tissue apposition surface comprises at least one of a roughened surface, a textured surface, or an applied biologic modifier that extends to said edge but does not extend beyond said edge;
an abutment-implant interface disposed towards the proximal end of said shaft;
an abutment configured to attach to said abutment-implant interface;
a means for connecting said abutment to said shaft abutment-implant interface; and
a crown having a distal end configured to fit over said abutment.
17. The two-stage endosseous dental implant system according to claim 16, wherein said abutment-implant interface has a substantially planar upper surface substantially surrounding said means for connectinga bore, and wherein said upper planar surface is approximately 90° to the longitudinal axis of said shaft.
18. The two-stage endosseous dental implant system according to claim 17, wherein said abutment has a substantially planar upper abutment-crown interface surface.
19. The two-stage endosseous dental implant system according to claim 17, wherein said abutment has a contoured upper abutment-crown interface surface substantially surrounding a chimney, and wherein a distal end of said crown is configured such that at least an outside surface of said crown extends to and follows the contours of said upper abutment-crown interface surface, thereby providing a narrow depth between the distal end of said crown and said bone tissue apposition surface.
20. The two-stage endosseous dental implant system according to claim 16, wherein said abutment-implant interface has a contoured upper surface substantially surrounding said means for connectinga bore, and said contoured upper surface approximately matches the contour of the natural bone morphology, and wherein said abutment has a lower surface configured to substantially abut said contoured upper surface.
21. The two-stage endosseous dental implant system according to claim 20, wherein said abutment has a substantially planar upper abutment-crown interface surface.
22. The two-stage endosseous dental implant system according to claim 20, wherein said abutment has a contoured upper abutment-crown interface surface substantially surrounding a chimney, and wherein a distal end of said crown is configured such that at least an outside surface of said crown extends to and follows the contours of said upper abutment-crown interface surface, thereby providing a narrow depth between the distal end of said crown and said bone-tissue apposition surface.
23. A one-stage endosseous dental implant system, comprising:
a threaded shaft made from a biocompatible material, said shaft having a distal end and a proximal end;
a bone-tissue apposition surface formed on said shaft and comprising an edge disposed adjacent to saidan abutment-implant interface, said edge of said bone-tissue apposition surface including at least one peak and trough configured to approximate the physiological contours of naturally occurring bone-tissue morphology;
an abutment permanently attached to the proximal end of said shaft; and
a crown having a distal end configured to secure to said abutment;
wherein said bone-tissue apposition surface comprises at least one of a roughened surface, a textured surface, or an applied biologic modifier that extends to said edge but does not extend beyond said edge.
24. The one-stage endosseous dental implant system according to claim 23, wherein said abutment has a substantially planar upper surface substantially surrounding a chimney, and wherein said upper planar surface is approximately 90° to the longitudinal axis of said shaft.
25. The one-stage endosseous dental implant system according to claim 23, wherein said abutment has a contoured upper surface substantially surrounding a chimney, and wherein said contoured upper surface approximately matches the contour of naturally occurring bone-tissue morphology.
26. The one-stage endosseous dental implant system according to claim 25, wherein a distal end of said crown is configured such that at least an outside surface of said crown extends to and follows the contours of said contoured upper surface, thereby providing a narrow depth between the distal end of said crown and the bone-tissue apposition surface.
27. The endosseous dental implant according to claim 4, wherein said soft-tissue apposition surface comprises a polished surface.
28. The endosseous dental implant according to claim 1, further comprising:
an anti-rotational feature and a bore for connecting an abutment to said abutment-implant interface for use in a two-stage procedure.
29. The endosseous dental implant according to claim 28, wherein said abutment-implant interface has a substantially planar upper surface approximately 90° to the longitudinal axis of said shaft, and wherein said planar upper surface substantially surrounds said bore.
30. The endosseous dental implant according to claim 28, wherein said abutment-implant interface has a contoured upper surface, and wherein said contoured upper surface substantially surrounds said bore.
31. The endosseous dental implant according to claim 30, further comprising an abutment wherein a lower surface of the abutment substantially abuts against said contoured upper surface, thereby providing improved lateral support.
32. The endosseous dental implant according to claim 1, wherein said bone-tissue apposition surface comprises an applied textured surface.
33. The endosseous dental implant according to claim 1, wherein said bone-tissue apposition surface comprises an applied growth factor.
34. The endosseous dental implant according to claim 1, wherein said bone-tissue apposition surface comprises an applied protein.
35. The endosseous dental implant according to claim 1, wherein said bone-tissue apposition surface comprises an acid etched surface.
36. The endosseous dental implant according to claim 1, wherein said bone-tissue apposition surface comprises a surface blasted with particles.
37. The endosseous dental implant according to claim 1, wherein said edge of said bone-tissue apposition surface includes a set of peaks and troughs.
38. The endosseous dental implant according to claim 1, wherein said edge of said bone-tissue apposition surface includes two peaks and two troughs.
39. The endosseous dental implant according to claim 5, wherein said bone-tissue apposition surface comprises an applied textured surface.
40. The endosseous dental implant according to claim 5, wherein said bone-tissue apposition surface comprises an applied growth factor.
41. The endosseous dental implant according to claim 5, wherein said bone-tissue apposition surface comprises an applied protein.
42. The endosseous dental implant according to claim 5, wherein said bone-tissue apposition surface comprises an acid etched surface.
43. The endosseous dental implant according to claim 5, wherein said bone-tissue apposition surface comprises a surface blasted with particles.
44. The endosseous dental implant according to claim 5, wherein said boundary of said bone-tissue apposition surface defines a set of peaks and troughs.
45. The endosseous dental implant according to claim 5, wherein an edge of said bone-tissue apposition surface defines two peaks and two troughs.
46. The endosseous dental implant according to claim 45, further comprising a soft-tissue apposition surface formed on said shaft and disposed between said edge of said bone-tissue apposition surface and said abutment-implant interface, said soft-tissue apposition surface including an edge with at least two peaks and troughs configured to approximate the physiological contours of naturally occurring soft-tissue morphology, said soft-tissue apposition surface being configured to promote, enhance or maintain soft-tissue growth or apposition.
47. The endosseous dental implant according to claim 5, further comprising a soft-tissue apposition surface formed on said shaft and disposed between said edge of said bone-tissue apposition surface and said abutment-implant interface, said soft-tissue apposition surface including an edge with at least one peak and trough configured to approximate the physiological contours of naturally occurring soft-tissue morphology, said soft-tissue apposition surface being configured to promote, enhance or maintain soft-tissue growth or apposition.
48. The endosseous dental implant according to claim 5, further comprising a soft-tissue apposition surface formed on said shaft and disposed between said edge of said bone-tissue apposition surface and said abutment-implant interface, said soft-tissue apposition surface being configured to promote, enhance or maintain soft-tissue growth or apposition.
49. The one-stage endosseous dental implant according to claim 13, wherein said abutment has a substantially planar upper surface approximately 90° to the longitudinal axis of said shaft.
50. The one-stage endosseous dental implant according to claim 13, wherein said abutment has a contoured upper surface.
51. The endosseous dental implant according to claim 13, wherein said bone-tissue apposition surface comprises an applied textured surface.
52. The endosseous dental implant according to claim 13, wherein said bone-tissue apposition surface comprises an applied growth factor.
53. The endosseous dental implant according to claim 13, wherein said bone-tissue apposition surface comprises an applied protein.
54. The endosseous dental implant according to claim 13, wherein said bone-tissue apposition surface comprises an acid etched surface.
55. The endosseous dental implant according to claim 13, wherein said bone-tissue apposition surface comprises a surface blasted with particles.
56. The endosseous dental implant according to claim 13, wherein said edge of said bone-tissue apposition surface includes a set of peaks and troughs.
57. The endosseous dental implant according to claim 13, wherein said edge of said bone-tissue apposition surface includes two peaks and two troughs.
58. The endosseous dental implant according to claim 57, further comprising a soft-tissue apposition surface formed on said shaft and disposed between said edge of said bone-tissue apposition surface and said abutment-implant interface, said soft-tissue apposition surface including an edge with at least two peaks and troughs configured to approximate the physiological contours of naturally occurring soft-tissue morphology, said soft-tissue apposition surface being configured to promote, enhance or maintain soft-tissue growth or apposition.
59. The endosseous dental implant according to claim 13, further comprising a soft-tissue apposition surface formed on said shaft and disposed between said edge of said bone-tissue apposition surface and said abutment-implant interface, said soft-tissue apposition surface including an edge with at least one peak and trough configured to approximate the physiological contours of naturally occurring soft-tissue morphology, said soft-tissue apposition surface being configured to promote, enhance or maintain soft-tissue growth or apposition.
60. The endosseous dental implant according to claim 13, further comprising a soft-tissue apposition surface formed on said shaft and disposed between said edge of said bone-tissue apposition surface and said abutment-implant interface, said soft-tissue apposition surface being configured to promote, enhance or maintain soft-tissue growth or apposition.
61. The two-stage endosseous dental implant system according to claim 16, further comprising an anti-rotational member on said shaft for connecting said abutment to said shaft, wherein said anti-rotational feature is an external hex.
62. The two-stage endosseous dental implant system according to claim 16, wherein said abutment includes a through-bore.
63. An endosseous dental implant, comprising:
a shaft made from a biocompatible material, said shaft having a distal end and a proximal end;
an upper surface disposed towards the proximal end of said shaft;
a bone-tissue apposition surface formed on said shaft and said bone-tissue apposition surface having an edge including at least one peak and trough configured to approximate the physiological contours of naturally occurring bone-tissue morphology, wherein said bone-tissue apposition surface comprises at least one of a roughened surface, a textured surface, or an applied biologic modifier that extends to said edge but does not extend beyond said edge;
a bore having an opening on said upper surface for connecting an abutment to said shaft; and
an anti-rotational member on said shaft also for connecting an abutment to said shaft.
64. The endosseous dental implant of claim 63, wherein said anti-rotational member is an external hex.
65. The endosseous dental implant of claim 63, wherein said anti-rotational member is an internal hex formed in said upper surface.
66. The endosseous dental implant of claim 63, wherein said upper surface is substantially planar and approximately 90° to the longitudinal axis of said shaft.
67. The endosseous dental implant of claim 63, wherein said upper surface is contoured.
68. The endosseous dental implant of claim 67, wherein said shaft includes threads.
69. The endosseous dental implant of claim 67, further comprising a soft-tissue apposition surface formed on said shaft and disposed between said edge of said bone-tissue apposition surface and said upper surface, said soft-tissue apposition surface including an edge with at least one peak and trough configured to approximate the physiological contours of naturally occurring soft-tissue morphology, and said soft-tissue apposition surface being configured to promote, enhance or maintain soft-tissue growth or apposition.
70. The endosseous dental implant according to claim 69, wherein said soft-tissue apposition surface comprises a polished surface.
71. The endosseous dental implant of claim 63, wherein the shaft includes threads.
72. The endosseous dental implant of claim 63, further comprising a soft-tissue apposition surface formed on said shaft and disposed between said edge of said bone-tissue apposition surface and said upper surface, said soft-tissue apposition surface including an edge with at least one peak and trough configured to approximate the physiological contours of naturally occurring soft-tissue morphology, and said soft-tissue apposition surface being configured to promote, enhance or maintain soft-tissue growth or apposition.
73. The endosseous dental implant according to claim 72, wherein said soft-tissue apposition surface comprises a polished surface.
74. The endosseous dental implant according to claim 63, wherein said bone-tissue apposition surface comprises an applied textured surface.
75. The endosseous dental implant according to claim 63, wherein said bone-tissue apposition surface comprises an applied growth factor.
76. The endosseous dental implant according to claim 63, wherein said bone-tissue apposition surface comprises an applied protein.
77. The endosseous dental implant according to claim 63, wherein said bone-tissue apposition surface comprises an acid etched surface.
78. The endosseous dental implant according to claim 63, wherein said bone-tissue apposition surface comprises a surface blasted with particles.
79. The endosseous dental implant according to claim 63, wherein said edge of said bone-tissue apposition surface includes a set of peaks and troughs.
80. The endosseous dental implant according to claim 63, wherein said edge of said bone-tissue apposition surface includes two peaks and two troughs.
81. The endosseous dental implant according to claim 80, further comprising a soft-tissue apposition surface formed on said shaft and disposed between said edge of said bone-tissue apposition surface and an abutment-implant interface, said soft-tissue apposition surface including an edge with at least two peaks and troughs configured to approximate the physiological contours of naturally occurring soft-tissue morphology, said soft-tissue apposition surface being configured to promote, enhance or maintain soft-tissue growth or apposition.
82. The endosseous dental implant according to claim 63, further comprising a soft-tissue apposition surface formed on said shaft and disposed between said edge of said bone-tissue apposition surface and an abutment-implant interface, said soft-tissue apposition surface including at least one peak and trough configured to approximate the physiological contours of naturally occurring soft-tissue morphology, said soft-tissue apposition surface being configured to promote, enhance or maintain soft-tissue growth or apposition.
83. The endosseous dental implant according to claim 63, further comprising a soft-tissue apposition surface formed on said shaft and disposed between said edge of said bone-tissue apposition surface and a abutment-implant interface, said soft-tissue apposition surface being configured to promote, enhance or maintain soft-tissue growth or apposition.
84. An endosseous dental implant, comprising:
a shaft made from a biocompatible material, said shaft having a distal end and a proximal end, said shaft being substantially symmetrical about a straight longitudinal axis of said shaft;
an upper surface disposed towards the proximal end of said shaft;
a bone tissue/soft tissue transition region between said shaft and said upper surface; and
a bone-tissue apposition surface formed on said bone tissue/soft tissue transition region, said bone-tissue apposition surface comprising an edge with at least one peak and trough configured to approximate the physiological contours of naturally occurring bone-tissue morphology, wherein said bone-tissue apposition surface comprises at least one of a roughened surface, a textured surface, or an applied biologic modifier that extends to said edge but does not extend beyond said edge.
85. The endosseous dental implant according to claim 84, wherein said edge of said bone tissue apposition surface has a highest point and a lowest point and the highest point of said edge of said bone-tissue apposition surface substantially aligns with the interproximal areas of the bone-tissue, and wherein the lowest point of said edge of said bone-tissue apposition surface substantially aligns with the buccal area of the bone-tissue.
86. The endosseous dental implant according to claim 84 further comprising:
a soft-tissue apposition surface formed on said shaft and disposed between said bone-tissue apposition surface and said upper surface, said soft-tissue apposition surface having an edge including at least one peak and trough configured to approximate the physiological contours of naturally occurring soft-tissue morphology.
87. The endosseous dental implant according to claim 86, wherein said soft-tissue apposition surface comprises a polished surface.
88. The endosseous dental implant according to claim 84, wherein said upper surface has a substantially planar upper surface approximately 90° to the longitudinal axis of said shaft.
89. The endosseous dental implant according to claim 84, wherein upper surface has a contoured upper surface.
90. The endosseous dental implant according to claim 84, further comprising:
an abutment permanently attached to said upper surface for use in a one-stage procedure.
91. The endosseous dental implant according to claim 90, wherein said shaft and said abutment are constructed from a single piece of material.
92. The endosseous dental implant according to claim 90, wherein said abutment has a substantially planar upper surface approximately 90° to the longitudinal axis of said shaft.
93. The endosseous dental implant according to claim 90, wherein said abutment has a contoured upper surface.
94. The endosseous dental implant according to claim 84, further comprising a bore having an opening on said upper surface for connecting an abutment to said shaft and an anti-rotational member comprising a plurality of interconnected sides also for connecting an abutment to said shaft.
95. The endosseous dental implant according to claim 94, wherein said anti-rotational member is an external hex.
96. The endosseous dental implant according to claim 94, wherein said anti-rotational member is an internal hex.
97. The endosseous dental implant according to claim 84, wherein said bone-tissue apposition surface comprises an applied textured surface.
98. The endosseous dental implant according to claim 84, wherein said bone-tissue apposition surface comprises an applied growth factor.
99. The endosseous dental implant according to claim 84, wherein said bone-tissue apposition surface comprises an applied protein.
100. The endosseous dental implant according to claim 84, wherein said bone-tissue apposition surface comprises an acid etched surface.
101. The endosseous dental implant according to claim 84, wherein said bone-tissue apposition surface comprises a surface blasted with particles.
102. The endosseous dental implant according to claim 84, wherein said edge of said bone-tissue apposition surface includes a set of peaks and troughs.
103. The endosseous dental implant according to claim 102, further comprising a soft-tissue apposition surface formed on said shaft and disposed between said edge of said bone-tissue apposition surface and a abutment-implant interface, said soft-tissue apposition surface including at least two peaks and troughs configured to approximate the physiological contours of naturally occurring soft-tissue morphology, said soft-tissue apposition surface being configured to promote, enhance or maintain soft-tissue growth or apposition.
104. The endosseous dental implant according to claim 84, further comprising a soft-tissue apposition surface formed on said shaft and disposed between said edge of said bone-tissue apposition surface and said abutment-implant interface, said soft-tissue apposition surface including at least one peak and trough configured to approximate the physiological contours of naturally occurring soft-tissue morpholoogy, said soft-tissue apposition surface being configured to promote, enhance or maintain soft-tissue growth or apposition.
105. The endosseous dental implant according to claim 84, further comprising a soft-tissue apposition surface formed on said shaft and disposed between said edge of said bone-tissue apposition surface and said abutment-implant interface, said soft-tissue apposition surface being configured to promote, enhance or maintain soft-tissue growth or apposition.
106. The endosseous dental implant according to claim 84, wherein said edge of said bone-tissue apposition surface includes two peaks and two troughs.
Description

This is a continuation of application Ser. No. 09/203,822, filed Dec. 1, 1998, U.S. Pat. No. 6,174,167.

FIELD OF INVENTION

The present invention relates generally to the field of implant dentistry, and more particularly to the design of one- and two-stage endosseous implants.

BACKGROUND OF THE INVENTION

Endosseous, i.e., intra boney, implants are commonly used to support fixed or removable prostheses where a patient's natural roots have been lost, and as a consequence, support is lacking to provide an adequate foundation onto which the dentist can rebuild a dentition. As the aging population retains more of their natural teeth, and as the younger generations want to take advantage of more conservative approaches offered by implant dentistry, e.g, using a single implant rather than cutting down adjacent teeth to support a short span bridge to replace a missing tooth, implant dentistry has gained more and more popularity and has moved into the mainstream of dentists worldwide.

The current implant design is based on an endosseous fixture, a titanium screw that acts as an artificial root: Br{dot over (a)}nemark, Tissue-Integrated Prostheses (1985). Modifications made to the endosseous fixture have centered on the macro structure of the implant (e.g., by exchanging the screw with a press-fit/cylindrical implant, a stepped screw or cylinder, or a tapered screw or cylinder), (Brunski J. B., Biomechanics Of Oral Implant,. Future Research Directions NIH Consensus Development Conference on Dental Implants, 1988; Kirsch A. et al., The IMZ Osseointegrated Implant System, Dent. Clin. North Am. 1989 (4), 33:733-791; Nimick G. A., A Multimodal Approach To Implant Prosthodontics, Dent. Clin. North Am. 1989(4), 33:869-878; Wennerberg A. et al., Design And Surface Characteristics Of 13 Commercially Available Oral Implant Systems, Id. 1993:8:622-633; Siegele D. et al., Numerical Investigations Of The Influence Of Implant Shape On Stress Distribution In The Jaw Bone, Id., 1989:4:333-340; Olsson M. et al., MkII-a Modified Self-Tapping Br{dot over (a)}nemark Implant: 3-Year Results, Id. at 1995:10:15-21; Langer B. et al., The Wide Fixture: A Solution For Special Bone Situations And A Rescue For The Compromised Implant, Part 1, Id., 1993:8:400-408; Schnitman P. A. et al., Implants For Partial Edentulism, NIH Consensus Development Conference On Dental Implants, 1988), on the micro structure (e.g., surface modifications such as use of machined titanium, blasted titanium, titanium alloy, acid-etched titanium, plasma-sprayed titanium and hydroxyappatite coating such as growth factors and proteins), (Baier R. E. et al., Future Directions In Surface Preparation Of Dental Implants, NIH Consensus Development Conference On Dental Implants, 1988; Young F. A., Future Directions In Dental Implant Materials Research, Id.; Krauser J., Hydroxylappatite-Coated Dental Implants, Dent. Clin. North Am. 1989, 33:4:879-903; Buser D. et al., Tissue Integration Of One-Stage ITI Implants: 3-Year Results Of A Longitudinal Study With Hollow-Cylinder And Hollow-Screw Implants, Int. J. Oral Maxillofac. Implants, 1991:6:405-412), on one-vs-two-stage designs, (Weber H. P. et al., Comparison Of Healed Tissues Adjacent To Submerged And Non-Submerged Unloaded Titanium Dental Implants, Clin. Oral Impl. Res. 1996:7:11-19; Busser D. et al., Tissue Integration Of One-Stage ITI Implants: 3-Year Results Of A Longitudinal Study With Hollow-Cylinder and Hollow-Screw Implants, Int. J. Oral Maxillofac Implants 1991:6:405-412), and on modifying the connection between the implant and its abutment (e.g., either internal hex, external hex, standard hex, tall hex, wide hex, etc.), (U.S. Pat. No. 4,960,381; U.S. Pat. No. 5,407,359; U.S. Pat. No. 5,209,666; U.S. Pat. No. 5,110,292).

Irrespective of the design variables discussed above, current systems have two general characteristics in common: First, the abutment-implant interface is planar; and second, the area intended for bone apposition, i.e., osseointegration, terminates parallel to the abutment-implant interface, 360 degrees around the implant.

Traditionally, endosseous implants were designed for treatment of the fully edentulous patient. In general, this particular patient population exhibits reduced bone-tissue volume, both in height and width when compared to the partially edentulous patient with recent or impending tooth loss. However, the bone-tissue morphology of partially edentulous patients significantly differs from that of fully edentulous patients, in that the naturally occurring supporting bone structures reveal a scalloped architecture around the tooth.

Currently available implant technology does not take the different bone-tissue morphologies into consideration. Heretofore use of an implant with an intended bone-tissue apposition surface parallel to a flat abutment-implant interface has led to either (1) placement of soft-tissue intended parts of the implant within bone-tissue, leading to bone-tissue resorption in these areas, and/or (2) exposure of hard-tissue intended surfaces to the soft tissue, resulting in possible peri-implant infections due to bacterial colonization around the rough surface and potential loss of the implant.

SUMMARY OF THE INVENTION

The present invention is directed towards novel endosseous implants, which are structured to better maintain hard and soft-tissue in the area where the implant exits from the bone-tissue and transverses the soft-tissue. More particularly, the implants of the present invention are designed so that areas intended for hard- and soft-tissue apposition exhibit a scalloped appearance, including convex and/or concave patterns, which approximate the naturally occurring bone morphology. Thus, the implants of the present invention provide substantially increased attachment possibilities for both bone-tissue and soft-tissue, thereby facilitating bone-tissue and soft-tissue preservation and maintenance.

The present invention will enable the surgeon to place an implant into residual bone with the surface of the implant intended for bone-tissue contact and apposition (machined or roughened, surface coated or textured, altered with biologic modifiers such as proteins and growth factors, or any combination thereof) being substantially in contact with bone-tissue, and with the surface intended for soft-tissue apposition (polished/treated with soft tissue specific surface modifications) being substantially in contact with soft-tissue.

More specifically, the implant, according to an embodiment of the present invention, is a substantially cylindrical shaft made from a biocompatible material having a distal end and a proximal end. A bone-tissue/soft-tissue transition region and a abutment-implant interface are both disposed towards the proximal end of the shaft. The bone-tissue/soft-tissue transition region is defined as the approximate region of the shaft and/or the abutment-implant interface where the implant exits the bone-tissue and transverses into the soft-tissue. The bone-tissue/soft-tissue transition region has a bone-tissue apposition surface configured to approximate the physiological contours of the alveolar bone. In a two-stage implant, the abutment-implant interface may be either substantially planar, approximately 90° to the longitudinal axis of the shaft, or contoured to approximate the contour of the alveolar bone. In a one-stage implant the abutment is permanently attached to the abutment-implant interface, or an integral part of the implant itself. The abutment, in both one-and two-stage implants, has an abutment-crown interface, which is either substantially planar or contoured to approximate the contour of the alveolar bone, and a chimney onto which the crown is secured.

An implant constructed according to the principles of the present invention facilitates hard- and soft-tissue maintenance, increases longevity of the implant and improves its aesthetic appearance. As will be readily apparent to the skilled artisan, the present invention may be applied to numerous prosthetic applications, such as, but not limited to, a single tooth replacement, an abutment for a bridge (fixed partial denture) regardless of the nature of the other abutment (natural tooth or implant), a pier abutment or an over denture abutment.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 depicts a frontal view of a prior art implant;

FIG. 2 depicts an interproximal view of the prior art implant in FIG. 1;

FIG. 3 depicts a frontal view an implant according to an embodiment of the present invention;

FIG. 4 depicts an interproximal view of the implant in FIG. 3;

FIG. 5A depicts a three-dimensional top frontal view of the implant in FIG. 3;

FIG. 5B depicts a three-dimensional interproximal top view of the implant in FIG. 3

FIG. 5C is a top view of an embodiment of an implant with an internal hex connection.

FIG. 6 depicts a frontal view of an implant according to another embodiment of the present invention;

FIG. 7 depicts an interproximal view of the implant in FIG. 6;

FIG. 8 depicts a three-dimensional top view of the implant in FIG. 6;

FIG. 9 shows a frontal view of an implant according to another embodiment of the present invention;

FIG. 10 depicts an interproximal view of the implant in FIG. 9;

FIG. 11 depicts a frontal view of an implant according to another embodiment of the present invention; and

FIG. 12 depicts an interproximal view of the implant in FIG. 11.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

FIGS. 1 and 2 show prior art implant 10, abutment-implant interface 12, abutment 14 and crown 16 constructed according to the current state of the art. Implant 10, according to the current state of the art, has a bone apposition surface 17, typically threads or otherwise roughened surface, extending into alveolar bone 18. Abutment-implant interface 12 extends partially into the alveolar bone and has polished surface 20, which is not suitable for bone apposition. Use of implant 10, constructed according to the current state of the art, results in bone-tissue resorption in bone-tissue/soft-tissue transition region 22 because polished surface 20 contacts bone-tissue, which as discussed, leads to bone resorption. Any loss of natural bone structure or topography is highly undesirable from both structural and aesthetic perspectives. Even the smallest bone-tissue loss between the tooth and an implant will lead to soft-tissue shrinkage due to lack of honey support, resulting in “black triangles” (open spaces) between the teeth-a highly unaesthetic situation.

FIGS. 3 and 4 show a two-stage implant according to an embodiment of the present invention. Implant 24 has shaft 26, substantially planar abutment-implant interface 28, distal end 30, proximal end 32 and bone-tissue/soft-tissue transition region 34. Abutment 36 and crown 38 are attached to implant 24 using means well known to the skilled artisan for two-stage implants. Implant 24 is made from a biocompatible material, including but not limited to, metal, ceramic, glasses or any combination thereof. Preferably implant 24 is made from titanium or an alloy thereof.

Bone-tissue/soft-tissue transition region 34 has a scalloped bone-tissue apposition surface 42, which approximately follows the naturally occurring contours of existing bone 40, and a scalloped soft-tissue apposition surface 44, which approximately follows the naturally occurring contours of the existing soft-tissue (not shown). Thus, there are two distinctive scalloped tissue-attachment surfaces: bone-tissue apposition surface 42 to maintain the naturally occurring bone-tissue morphology; and soft-tissue apposition surface 44 to maintain the naturally occurring soft-tissue morphology. The degree of scalloping or the height of the convex and concave regions depends on, inter alia, the degree of existing bone-tissue resorption, the size of the implant, the implant location within the arch, the bone morphology and the soft-tissue morphology. The dimensions are similar to the scalloped appearance of the cementoenanel (CE) junction observed on natural teeth. The vertical difference between the highest and lowest point of the scalloped margin ranges from less than 1 mm on posterior teeth to approximately 3-5mm on anterior teeth. By way of example, bone-tissue apposition surface 42 can be obtained by machining, application of textured surfaces, acid etching, blasting with particles, applying growth factor, applying protein, or other materials that promote, enhance, and/or maintain bone-tissue growth and/or apposition. Also by way of example, soft-tissue apposition surface 44 can be achieved by polishing or other treatment that leaves a surface to promote, enhance, and/or maintain soft-tissue growth and/or apposition. Below the bone-tissue/soft-tissue transition region 34, shaft 26 has threads 45, or other means well known in the art, to anchor the implant into the alveolar bone.

In use, the surgeon inserts distal end 30 into the alveolar bone such that bone-tissue apposition surface 42 and soft-tissue apposition surface 44 approximately mirror the existing bone- and soft-tissue morphology respectively. The implant should be aligned such that the highest points of bone apposition surface 42 are substantially aligned with the interproximal areas of the bone-tissue and such that the lowest points are substantially aligned with the buccal and lingual area of the bone-tissue. In a two-stage process, the surgeon sutures tissue over the implant, waits several months for the bone to adhere to the implant, opens the tissue, attaches abutment 36 to abutment-implant interface 28 and attaches crown 38 to abutment 36. Bone-tissue apposition surface 42 and soft-tissue apposition surface 44 maintain bone- and soft-tissue attachment levels and facilitate prevention of peri-implant infections, which occur due to increased peri-implant pocket depths frequently observed with the prior art implant designs. Therefore, implants constructed according to the present invention increase the longevity of the implant and improve the aesthetic appearance of the restoration.

Referring to FIGS. 5A and 5B, abutment-implant interface 28 has substantially planar upper surface 25, which is approximately 90° to the longitudinal axis of shaft 26, and connecting means 46 for connecting abutment 36 (FIGS. 3 and 4) to abutment-implant interface 28. A bore 51 can be provided with an opening on the upper surface of the abutment-implant interface. Connecting means 46 is well known in the art and includes, but is not limited to, internal hex 55 (FIG. 5C), external hex, standard hex, tall hex, wide hex or camlog. In an alternative embodiment of the present invention, as shown in FIGS. 6-8, abutment-implant interface 48 has at least its edges contoured to approximate the contours of the alveolar bone, thereby defining a contoured upper surface 50 (FIG. 8) surrounding connecting means 46. Also provided in this alternative embodiment is abutment 52, which has lower contoured surface 54 configured to substantially mate with contoured upper surface 50. The upper and lower contoured surfaces provide additional lateral support between abutment 52 and abutment-implant interface 48. Additionally, contoured upper surface 48 of this alternative embodiment results in a narrower depth between gum line 54 and abutment-implant interface 48 (FIGS. 6 and 7), thus enhancing longevity of the restoration as a result of decreased pocket depths. The bore 51 on the abutment-implant interface 48 corresponds with a through bore 63 in the abutment 52.

A skilled artisan will readily recognize that the principles of the present invention can be equally applied to one-stage as well as two-stage processes. For example, FIGS. 9 and 10 show one-stage implant 58, according to another embodiment of the present invention. Implant 58 includes shaft 60, distal end 62, proximal end 64 and bone-tissue/soft-tissue transition region 66 with scalloped bone-tissue apposition surface 42 and scalloped soft-tissue apposition surface 44, as substantially described above. Abutment 69 is permanently attached to the one-stage implant 58 as is well know in the art.

One-or two-stage implants, according to alternative embodiments of the present invention, may include either a planar abutment-crown interface 68 (FIGS. 3, 4, 9 and 10) or a contoured abutment-crown interface 70 (FIGS. 6, 7, 11 and 12), the latter of which substantially matches the natural contour of the alveolar bone. Contoured abutment-crown interface 70 allows for crown 38, in both one-and two-stage implants, to extend further towards the gum line, thereby resulting in a more aesthetically pleasing restoration. Chimney 72, or other means well known to the skilled artisan, is provided in both one-and two-stage implants according to the present invention for attaching crown 38 to the abutment.

Although various embodiments of the present invention have been described, the descriptions are intended to be merely illustrative. Thus, it will be apparent to the skilled artisan that modifications may be made to the embodiments as described herein without departing from the scope of the claims set forth below.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2112007Jan 16, 1937Mar 22, 1938Adams Pinkney BAnchoring means for false teeth
US3849887Mar 16, 1973Nov 26, 1974Vitredent CorpDental implant
US4051598Apr 22, 1975Oct 4, 1977Meer SneerDental implants
US4416629Jul 6, 1982Nov 22, 1983Mozsary Peter GOsseointerfaced implanted artificial tooth
US4468200Nov 7, 1983Aug 28, 1984Feldmuhle AktiengesellschaftHelical mandibular implant
US4624673Aug 3, 1982Nov 25, 1986United States Medical CorporationDevice system for dental prosthesis fixation to bone
US4713003May 19, 1986Dec 15, 1987University Of Toronto Innovations FoundationFixture for attaching prosthesis to bone
US4812120Nov 2, 1987Mar 14, 1989Flanagan Dennis FDentistry, jawbone
US4856994Jan 25, 1988Aug 15, 1989Implant Innovations, Inc.Periodontal restoration components
US4960381Aug 10, 1988Oct 2, 1990Core-Vent CorporationScrew-type dental implant anchor
US5004422Nov 9, 1989Apr 2, 1991Propper Robert HOral endosteal implants and a process for preparing and implanting them
US5035619Sep 5, 1990Jul 30, 1991Fereidoun DaftaryAnatomical restoration dental implant system with improved healing cap and abutment
US5049074Mar 29, 1990Sep 17, 1991Sugio OtaniDental implant
US5125839Sep 28, 1990Jun 30, 1992Abraham IngberDental implant system
US5246370Nov 27, 1992Sep 21, 1993Coatoam Gary WDental implant method
US5282746Nov 4, 1992Feb 1, 1994Grady C. SellersMethod of installing a dental prosthesis
US5310343Oct 14, 1992May 10, 1994Jiro HasegawaEndo-osseous implant
US5316477May 25, 1993May 31, 1994Calderon Luis OUniversal implant abutment
US5328371Oct 15, 1993Jul 12, 1994Friatec AktiengesellschaftDental implant
US5417568Feb 25, 1994May 23, 1995Giglio; Graziano D.Dental prosthesis
US5417569Oct 9, 1991May 23, 1995Perisse; JeanMulti-element dental implant
US5431567Nov 26, 1993Jul 11, 1995Daftary; FereidounAnatomical restoration dental implant system with interlockable various shaped healing cap assembly and matching abutment member
US5458488Feb 10, 1994Oct 17, 1995Wellesley Research Associates, Inc.Dental implant and post construction
US5464440Nov 13, 1992Nov 7, 1995Lucocer AktiebolagPorous implant with two sets of pores
US5527182Dec 23, 1993Jun 18, 1996Adt Advanced Dental Technologies, Ltd.Implant abutment systems, devices, and techniques
US5584693Sep 19, 1994Dec 17, 1996Katsunari NishiharaArtificial dental root
US5588838Oct 25, 1993Dec 31, 1996Astra AktiebolagFixture for use in a dental implant system
US5622500Feb 24, 1994Apr 22, 1997Core-Vent CorporationInsertion tool/healing collar/abutment
US5636989Jan 23, 1995Jun 10, 1997Somborac; MilanDental implant
US5667384May 17, 1995Sep 16, 1997Institut Straumann AgDevice for forming a dental prosthesis and method of manufacturing such a device
US5674069Jan 13, 1995Oct 7, 1997Osorio; JulianCustomized dental abutment
US5695334Dec 8, 1995Dec 9, 1997Blacklock; Gordon D.Bendable and castable post and core
US5759034Nov 29, 1996Jun 2, 1998Daftary; FereidounAnatomical restoration dental implant system for posterior and anterior teeth
US5779480May 20, 1997Jul 14, 1998Degussa AktiengesellschaftProsthetic abutment for dental implants
US5876454Jun 28, 1996Mar 2, 1999Universite De MontrealModified implant with bioactive conjugates on its surface for improved integration
US5908298Jan 23, 1996Jun 1, 1999Duerr; WalterEnossal single tooth implant with spacer sleeve
US5931675Mar 12, 1998Aug 3, 1999Callan; Donald P.Dental prosthesis
US5989027Dec 8, 1995Nov 23, 1999Sulzer Calcitek Inc.Dental implant having multiple textured surfaces
US5989029Oct 29, 1997Nov 23, 1999Atlantis Components, Inc.Customized dental abutments and methods of preparing or selecting the same
US6012923Jul 30, 1998Jan 11, 2000Sulzer Calcitek Inc.Two-piece dental abutment with removable cuff
US6024567Apr 8, 1999Feb 15, 2000Callan; Donald P.Dental prosthesis
US6142782May 22, 1998Nov 7, 2000Lazarof; SargonImplant assembly and process for preparing a prosthetic device
US6162054Jan 26, 1999Dec 19, 2000Takacs; GyulaSubgingival jaw implant
US6164969Mar 21, 1997Dec 26, 2000Dinkelacker; WolfgangDental implant
US6174167Dec 1, 1998Jan 16, 2001Woehrle Peter S.Bioroot endosseous implant
US6217331Oct 1, 1998Apr 17, 2001Implant Innovations, Inc.Single-stage implant system
US6217333May 9, 2000Apr 17, 2001Carlo ErcoliDental implant for promoting reduced interpoximal resorption
US6227858Feb 25, 1997May 8, 2001Nobel Biocare AbBone anchoring element
US6231342Oct 8, 1999May 15, 2001Atlantis Components, Inc.Customized dental abutments and methods of preparing or selecting the same
US6273720Apr 20, 1999Aug 14, 2001Robert SpaltenDental implant system
US6280195Jun 11, 1999Aug 28, 2001Astra AktiebolagMethod of treating a partially or totally edentulous patient
US6283753Jul 12, 2000Sep 4, 2001The Millennium Business Group Ltd.Implant abutment systems, devices, and techniques
US6283754Oct 3, 2000Sep 4, 2001Woehrle Peter S.Bioroot endosseous implant
US6287115Nov 17, 1998Sep 11, 2001L. Paul LustigDental implant and tool and method for effecting a dental restoration using the same
US6312260Aug 12, 1999Nov 6, 2001Nobel Biocare AbOne-step threaded implant
US6350126Sep 1, 2000Feb 26, 2002Ricardo LevismanBone implant
US6364663Dec 3, 1999Apr 2, 2002Wolfgang DinkelackerTooth implant and method to make it
US6431867Aug 10, 2000Aug 13, 2002Glenn GittelsonDental implant system
US6464500May 22, 2001Oct 15, 2002Don Dragoljub PopovicDental implant and abutment system
US6527554Jun 4, 2001Mar 4, 2003Nobel Biocare AbNatural implant system
US6547564Jul 14, 1999Apr 15, 2003Astra AktiebolagBone implant having circumferentially oriented roughness
US6619958Mar 19, 2001Sep 16, 2003Implant Innovations, Inc.Implant delivery system
US6626911Nov 9, 1999Sep 30, 2003Nobel Biocare AbThreaded implant, and arrangement and method for such an implant
US6652765Feb 6, 2001Nov 25, 2003Implant Innovations, Inc.Improving bone bonding; acid etch removal of native oxide layer from titanium device and roughening
US6655961Dec 3, 2001Dec 2, 2003Richard Day CottrellModified dental implant fixture
US6672872Aug 19, 2002Jan 6, 2004Dental Design Consultants, LlcModified dental implant fixture
US6854972Jan 11, 2000Feb 15, 2005Nicholas ElianDental implants and dental implant/prosthetic tooth systems
US6939135Jun 3, 2002Sep 6, 2005Schubert L. SapianGrowth factor releasing biofunctional dental implant
US7270542Jan 5, 2004Sep 18, 2007Astra Tech AbModified dental implant fixture
US20010021498May 14, 2001Sep 13, 2001Julian OsorioCustomized dental abutments and methods of preparing or selecting the same
US20020182567Jun 4, 2001Dec 5, 2002Hurson Steven M.Natural implant system
US20030031981Jan 30, 2002Feb 13, 2003Robert HoltProsthetic implant
US20030031982Aug 9, 2002Feb 13, 2003Abarno Juan CarlosSplit implant for dental reconstruction
US20030068599Oct 3, 2002Apr 10, 2003Balfour Alan R.Esthetic profile endosseous root-formed dental implant
US20030124489Dec 5, 2002Jul 3, 2003Hurson Steven M.Natural implant system
US20050014108May 14, 2004Jan 20, 2005Wohrle Peter S.Dental implant system
US20050214714Jan 26, 2005Sep 29, 2005Wohrle Peter SDental implant system
US20060188846Apr 19, 2006Aug 24, 2006Wohrle Peter SDental implant system
US20060194170Apr 19, 2006Aug 31, 2006Wohrle Peter SDental implant system
US20060246398Apr 19, 2006Nov 2, 2006Friadent GmbhDental implant component
CH413224A Title not available
DD250052A1 Title not available
DE4339060A1Nov 16, 1993May 18, 1995Borsig Babcock AgGetriebeverdichter für die Verdichtung von Sauerstoff
EP0705574A2Apr 5, 1995Apr 10, 1996Core-Vent CorporationSelective surface, externally-threaded endosseous dental implant
EP0820737A2Jul 25, 1997Jan 28, 1998Injex CorporationArtificial dental implant
EP0868889A1Mar 21, 1997Oct 7, 1998Dinkelacker, Wolfgang, Dr. med. dent.Dental implant
EP0879580A2May 15, 1998Nov 25, 1998Core-Vent CorporationNon-submergible, one part, root form endosseous dental implants
EP0910297A1Jul 3, 1997Apr 28, 1999Vagn Erik DallCortical bone screw
EP1013236A1Dec 11, 1998Jun 28, 2000Dinkelacker, Wolfgang, Dr. med. dent.Dental implant and manufacturing method
FR2317904A1 Title not available
FR2634369A1 Title not available
GB1291470A Title not available
IT540713A Title not available
JPH1033562A Title not available
JPH08117250A Title not available
JPS63125260A Title not available
WO1996029020A1Mar 15, 1996Sep 26, 1996Straumann Inst AgDevice for connecting a dental implant to a conical secondary element
WO1997037610A1Apr 4, 1996Oct 16, 1997Julian OsorioCustomized dental abutment
WO1998023221A1Nov 24, 1997Jun 4, 1998Fereidoun DaftaryAnatomical restoration dental implant system for posterior and anterior teeth
Non-Patent Citations
Reference
1"Implantatsysteme und ihre Komponenten", 1998, Implantologie, 1:75-79.
2Albrektsson et al. "Osseointegrated Dental Implants", The Dental Clinics of North America, vol. 30 No. 1, Jan. 1986. p. 151-174.
3Appendix A to Request for Reexamination of US Patent No. 6,283,754.
4Appendix B to Request for Reexamination of US Patent No. 6,283,754.
5Appendix C to Request for Reexamination of US Patent No. 6,283,754.
6Appendix D to Request for Reexamination of US Patent No. 6,283,754.
7Appendix E to Request for Reexamination of US Patent No. 6,283,754.
8Appendix F to Request for Reexamination of US Patent No. 6,283,754.
9Appendix G to Request for Reexamination of US Patent No. 6,283,754.
10Appendix H to Request for Reexamination of US Patent No. 6,283,754.
11Baier, et al., "Future Directions in Surface Preparation of Dental Implants", Journal of Dental Education, 52:788-791.
12Baier, et al., 1988, "Future Directions in Surface Preparation of Dental Implants", Journal of Dental Education, 52:788-791.
13Bengazi, et al., 1996, "Recession of the soft tissue margin at oral implants", Clinical Oral Implants Research, 7:303-310.
14Bolind, P., et al., Influence Of External Administration Of Epinephrine On Bone Regeneration., Int. J. Oral Maxillofac Implants. (1989); 4:285-287; Quintessence Publishing Co., Inc., Carol Stream, Illinois.
15Brånemark, et al., 1985, "Tissue-Integrated Prostheses", Quintessence Publishing Co., Inc., p. 11-76.
16Branemark, et al., 1985, "Tissue-Integrated Prosthesis: Nature and Significance of the Edentulous State" Quintessence Publishing Co., Inc., chapter 2:77-88.
17Brånemark, P.I. et al., Osseointegrated Implants In The Treatment Of The Edentulous Jaw. Experience From A 10-Year Period, Scand. J. Plastic Reconstruc. Surg., (1977) (Suppl. 16 at p. 9); Almqvist & Wiksell International, Stockholm, Sweden.
18Brunski, John B., 1988, Blomechanics of Oral Implants: Future Research Directions, Journal of Dental Education, 52:775-787.
19Buser, D., et al., Influence of Surface Characteristics on Bone Integration of Titanium Implants. A Histomorphometric Study In Miniature Pigs, J. Biomed. Materials Res., (1991); 25:889-902; John Wiley & Sons, Hoboken, New Jersey.
20Buser, et al., 1991, "Tissue Integration of One-Stage ITI Implants: 3 year Results of a Longitudinal Study With Hollow-Cylinder and Hollow-Screw Implants.", The International Journal of Oral & Maxillofacial Implants, 6:405-412.
21Buser, et al., 1991, "Tissue Integration of One-Stage ITI Implants: 3-Year Results of a Longitudinal Study With Hollow-Cylinder and Hollow-Screw Implants", The International Journal of Oral & Maxillofacial Implants, 6:405-412.
22Buser, et al., 1996, "Comparison of healed tissues adjacent to submerged and non-submerged unloaded titanium dental implants", Clinical Oral Implants Research, 7:11-19.
23Buser, et al., 1996m "Comparison of healed tissues adjacent to submerged and non-submerged unloaded titanium dental implants", Clinical Oral Implants Research, 7:11-19.
24Chiche, el al., 1998, "Multidisplinary Implant Dentistry for improved Aesthetics and Function", Pract Periodont. Aesthet. Dent., 10:177-186.
25Chiche, et al., 1998, "Multidispilinary Implant Dentistry for Improved Aesthetics and Function", Pract Periodont. Aesthet. Dent., 10:177-186.
26Coatoam, Gary W. et al., "A Four-year Study Examining the Results of Indirect Sinus Augmentation Procedures". Journal of Oral Implantology, vol. 23, No. 3/1997, pp. 117-127, 1997.
27Coatoam, Gary W. et al., "Immediate Placement of Anatomically Shaped Dental Implants". Journal of Oral Implantology, vol. 26, No. 3/2000, p. 170-176, 2000.
28Coatoam, Gary W. et al., "The Segmental Ridge-Split Procedure". J Periodontal, vol. 74, No. 5, May 2003, p. 757-770.
29Coatoam, Gary W., "Indirect Sinus Augmentation Procedures Using One-Stage Anatomically Shaped Root-form Implants". Journal of Oral Implantology, vol. 23, No. 1 & 2/1997, p. 25-42, 1997.
30Cochran, D.L., et al., Bone Response to Unloaded and Loaded Titanium Implants with a Sandblasted and Acid-etched Surface: A Histometric Study in the Canine Mandible, J. Biomed. Materials res., (1997); 40:1-11; John Wiley & Sons, Hoboken, New Jersey.
31Cochran, D.L., et al., Evaluation of an Endosseous Titanium Implant with a Sandblasted and Acid-Etched Surface in the Canine Mandible: Radiographic Results, Clin. Oral Impl. Res. (1996); 7:240-252; Blackwell Publishing Ltd., Oxford, United Kingdom.
32Cook, S., et al., The Effect Of Surface Macrotexture On The Mechanical and Histologic Characteristics Of Hydroxyapatite-Coated Dental Implants, J. Oral Implant. (1993); 4:288-294; Allen Press, Lawrence, Kansas.
33Dinkelacker, Wolfgang, "Vergleighende Untersuchung zur Passform metallkeramischer Kronen auf gegossener und galvanish hergestellter metallener Substruktur" Medizinischen Fakultat (Klinische Medizin) der Eberhard-Karls-Universitat Tubingen, 1990.
34Eckert et al. "Patient Evaluation and Prosthodontic Treatment Planning for Osseointegrated Implants", The Dental Clinics of North America, vol. 33 No. 4, Oct. 1989. p. 599-618.
35Examination Report received in corresponding European Patent Application No. 99968057.2, mailed Apr. 21, 2009, 5 pages.
36F.A. Young, D.Sc., 1988, "Future Directions in Dental Implants Materials Research", Journal of Dental Education 52:770-774.
37F.A. Young, D.Sc., 1988, "Future Directions in Dental Implants Materials Research", Journal of Dental Education, 52:770-774.
38Gerald A. Niznick, Oct. 1989, "A Multimodal Approach to Implant Prosthodontics", Dental Clinics of North America, 33:869-878.
39Gieloff et al., "Bio-Design-Implatantate Soforimplantate mit dem Re Implant System", ZWR, 104. Jahrg. 1995, Nr. 4, pp. 252-256.
40Gieloff et al., 1995, Bio-Design-Implantate Sofortimplantate mit dem Re Implant System, p. 252-256 ( with English translation).
41Gomez-Roman, et al., 1997, "The Frialit-2 Implant System: Five-Year Clinical Experience in Single-Tooth and Immediately Postextraction Applications", The International Journal of Oral & Maxillofacial Implant, 12:299-309.
42Gomez-Roman, et al., 1997, "The Frialit-2 Implant System: Five-Year Clinical Experience in Single-Tooth and Immediately Postextraction Applications", The International Journal of Oral & Maxillofacial Implants, 12:299-309.
43Gotfredsen, K, et al., Anchorage of TiO2-Blasted, HA Coated, and Machined Implants: An Experimental Study With Rabbits. J. Biomed. Materials Res. (1995); 29:1223-1231; John Wiley & Sons, Hoboken, New Jersey.
44Gotfredsen, K., et al., Histomorphometric And Removal Torque Analysis For TiO2-Blasted Titanium Implants-An Experimental Study On Dogs, Clin. Oral Impl. Res. (1992); 3:77-84; Copenhagen, Denmark.
45Gotfredsen, K., et al., Histomorphometric And Removal Torque Analysis For TiO2-Blasted Titanium Implants—An Experimental Study On Dogs, Clin. Oral Impl. Res. (1992); 3:77-84; Copenhagen, Denmark.
46Gottlander, M., et al., Histomorphometric Analyses Of Hydroxyapatite-Coated And Uncoated Titanium Implants. The Importance of The Implant Design., Clin. Oral Implants Res. (1992); 2:71-76; Blackwell Publishing Ltd., Oxford, United Kingdom.
47Gottlander, M., et al., Short- and Long-Term Animal Studies With A Plasma-Sprayed Calcium Phosphate-Coated Implant, Clin. Oral Implants Res. (1997); 5:345-351; Blackwell Publishing Ltd., Oxford, United Kingdom.
48Gottlander, M., et al., Short- and Long-Term Animal Studies With A Plasma-Sprayed Calcium Phosphate-Coated Implant, Clin. Oral Implants Res. (1997); 5:345-351; Blackwell Publishing Ltd., Oxford, United Kingdom.
49Hansson, Stig, et al., The Relation Between Surface Roughness and Interfacial Shear Strength for Bone Anchored Implants-A Biomechanical Approach in Towards an Optimized Dental Implant and Implant Bridge Design-A Biomechanical Approach, Biomechanics, Department of Polymeric Materials, School of Mechanical and Vehicular Engineering, Chalmers University of Technology, Göteborg, Sweden (1997).
50Hansson, Stig, et al., The Relation Between Surface Roughness and Interfacial Shear Strength for Bone Anchored Implants—A Biomechanical Approach in Towards an Optimized Dental Implant and Implant Bridge Design—A Biomechanical Approach, Biomechanics, Department of Polymeric Materials, School of Mechanical and Vehicular Engineering, Chalmers University of Technology, Göteborg, Sweden (1997).
51Heydecke et al., "Optimal Esthetics in Single Tooth Replacement with the Re-implant System: A Case Report". The International Journal of Prosthodontics 1999, vol. 12, pp. 184-189.
52Hobo et al. "Osseointegration and Occlusal Rehabilitation", 1989. p. 3-7.
53Jack T. Krauser, DMD, Oct. 1989, "Hydroxylapatite-Coated Dental Implants", Dental Clinics of North America, 33:879-903.
54Jansen, et al., 1997, "Microbial Leakage and Marginal Fit of the Implant-Abutment Interface", The International Journal of Oral & Maxillofacial Implants, 12:527-540.
55Jansen, et al., 1997, "Microbial Leakage and Marginal Fit of the Implant-Abutment Interface", the International Journal of Oral & Maxillofacial Implants, 12:527-540.
56John B. Brunski, 1988, "Biomechanics of Oral Implants: Future Research Directions", Journal of Dental Education, 52:775-787.
57Kirsch, et al., 1989., "The IMZ Osteointegrated Implant System", Dental Clinics of North America, 33:733-791.
58Klokkevold, P., et al., Osseointegration Enhanced by Chemical Etching of The Titanium Surface-A Removal Torque Study in the Rabbit, Clin. Oral Impl. Res.(1997); 8:442-447; Blackwell Publishing Ltd., Oxford, United Kingdom.
59Klokkevold, P., et al., Osseointegration Enhanced by Chemical Etching of The Titanium Surface—A Removal Torque Study in the Rabbit, Clin. Oral Impl. Res.(1997); 8:442-447; Blackwell Publishing Ltd., Oxford, United Kingdom.
60Kohal et al., "Custom-made root analogue titanium implants placed into extraction sockets". Clinical Oral Implants Research 1997, vol. 8, pp. 386-392.
61Kohal et al., "Wurzelanaloge Titanimplantate (Bio-Design-Implantate) für die Sofortimplantation-Das Re-implant-System". Implantologie 1996, vol. 2, pp. 99-115 (with English Translation).
62Kohal et al., 1996., "Wurzetanagoge Titanimplantate (Bio-Design-Implantate) für die Sofortimplatnation-Das Re-Implant®-System", p. 99-115 (with English Translation).
63Krauser, Jack T., 1989., "Hydorxylapatite-Coated Dental Implants", Dental Clinics of North America, 33:879-903.
64Langer, et al., 1993, "The Wide Fixture: A Solution for Special Bone Situations and a Rescue for the Compromised Implant. Part 1", The International Journal of Oral & Maxillofacial Implants, 8:400-408.
65Lefkove, Michael, D., et al., Immediate Loading of Cylinder Implants With Overdentures in the Mandibular Symphysis: The Titanium Plasma-Sprayed Screw Technique, J. Oral Implant. (1990); 16:265-271; Allen Press, Lawrence, Kansas.
66Meffert, Roland M., DDS, 1988, "The Soft Tissue Interface in Dental Implantology", Journal of Dental Education, 52:810-878.
67Misch "Implant Terminology" Contemporary Implant Dentistry, 1993. p. 19-27.
68Najjar, T.A., et al., Enhanced Osseointegration Of Hydroxylapatite Implant Material, Oral Surg. Oral Med Oral Pathol. (1991) 1:9-15; Dept. of Oral Pathology, UMD-New Jersey Dental School, Newark, NJ.
69Najjar, T.A., et al., Enhanced Osseointegration Of Hydroxylapatite Implant Material, Oral Surg. Oral Med Oral Pathol. (1991) 1:9-15; Dept. of Oral Pathology, UMD—New Jersey Dental School, Newark, NJ.
70Niznick, Gerald A., Oct. 1989, "A Multimodal Approach to Implant Prosthodontics", Dental Clinics of North America, 33:869-878.
71Olefjord, I., et al., Surface Analysis of Four Dental Implant Systems, Int. J. Oral Maxillofac. Implants (1993); 8:32-40; Quintessence Publishing Co., Inc., Carol Stream, Illinois.
72Olsson, et al., 1995, "MkII-A Modified Self-Tapping Branemark Implant: 3-Year Results of a Controlled Prospective Pilot Study", The International Journal of Oral & Maxillofacial Implant, 10:15-21.
73Olsson, et al., 1995, "MkII—A Modified Self-Tapping Branemark Implant: 3-Year Results of a Controlled Prospective Pilot Study", The International Journal of Oral & Maxillofacial Implant, 10:15-21.
74Olsson, et al., 1995, "MkII—A Modified Self-Tapping Brånemark Implant: 3-Year Results of a Controlled Prospective Pilot Study", The International Journal of Oral & Maxillofacial Implant, 10:15-21.
75Order Granting Request For Ex Parte Reexamination (U.S. Appl. No. 90/007,836).
76Parel, et al., "Esthetics and Osseointegration", 1989. p. 36, 40, 41, and 121.
77Piattelli, A., et al., Immediate Loading of Titanium plasma-Sprayed Screw-Shaped Implants in Man: A Clinical and Histological Report of Two Cases, J. Periodontol. (1997); 68:591-597; Chicago, Illinois.
78Prestipino, et al., Jan./Feb. 1993, "esthetic High-Strength Implant Abutments. Part 1", Journal of Esthetic Dentistry, p. 29-35.
79Prestipino, et al., Jan./Feb. 1993, "Esthetic High-Strength Implant Abutments. Part 1",Journal of Esthetic Dentistry, p. 29-35.
80Product brochure published before Dec. 1, 1998.
81Request for Ex Parte Reexamination of US Patent No. 6,283,754 (U.S. Appl. No. 90/007,836).
82Roland M. Meffert, DDS, 1988, "The Soft Tissue Interface in Dental Implantology", Journal of Dental Education, 52:810-811.
83Saadoun, et al., 1998, "Peridontal Implications in Implant Treatment Planning of Aesthtic Results", Pract. Periodont. Asthet. Dent., 10:655-664.
84Saadoun, et al., 1998, "Periodontal Implications in Implant Treatment Planning for Aesthetic Results", Pract. Periodont. Aesthet. Dent., 10:655-664.
85Schnitman, et al., 1988, "Implants for Partial Edentulism", Journal of Dental Education, 52:725-736.
86Schnitman, et al., 1988, Implants for Partial Edentulism, Journal of Dental Education, 52:725-736.
87Schwartz, Z., et al., Underlying Mechanisms at the Bone-Surface Interface During Regeneration, J. Periodont. Res. (1992); 32: 166-171; Blackwell Publishing Ltd., Oxford, United Kingdom.
88Siegeie, et al., 1989, "Numerical Investigations of the Influence of Implant Shape on Stress Distribution in the Jaw Bone", the International Journal of Oral & maxillofacial Implants, 4:333-340.
89Siegele, et al., 1989, "Numerical Investigations of the Influence of Implant Shape on Stress Distribution in the Jaw Bone", The International Journal of Oral & Maxillofacial Implants, 4:333-340.
90Spiekerman, et al., "Implantology". Color Atlas of Dental Medicine, 1995, pp. 15, 22-23, 274-275, and 307.
91Spiekermann, H., et al., A 10-Year Follow-Up Study of IMZ and TPS Implants In The Edentulous Mandible Using Bar-Retained Overdentures, Int. J. Oral Maxillofac. Implants (1995); 10:231-243; Quintessence Publishing Co., Inc., Carol Stream, Illinois.
92Spierkermann et al. "Implant Systems" Color Atlas of Dental Medicine: Implantology, 1995. p. 25-58.
93Straumann Dental-Brochure; May 2000.
94Straumann Dental—Brochure; May 2000.
95Strub et al., "The Re Implant® System for Immediate Implant Placement". Journal of Esthetic Dentistry 1997, vol. 9, pp. 187-196.
96Sullivan, et al., May/Jun. 1993, "Considerations for Successful Single tooth Implant Restorations", Journal of Esthetic Dentistry, 5:119-124.
97Supplemental Search Report for European Application No. 99 96 8057 (European Counterpart of the current application), mailed Mar. 30, 2005.
98W. Eugene Roberts, DDS, Ph.D., 1998, "Bone Tissue Interface", Journal of Dental Education, 52:804-809.
99Wagner, W., A Brief Introduction To Advanced Surface Modification Techniques, J. Oral Implant., (1992); 18:231-235; Allen Press, Lawrence, Kansas.
100Wennerberg et al., "Experimental study of turned and grit-blasted screw-shaped implants with special emphasis on effects of blasting material and surface topography", 1996.
101Wennerberg, A., et al., A 1-Year Follow-Up Of Implants Of Differing Surface Roughness Placed in Rabbit Bone., Int. J. Oral Maxillofac. Implants (1997); 4:486-494; Quintessence Publishing Co., Inc., Carol Stream, Illinois.
102Wennerberg, A., et al., A Histomorphometric And Removal Torque Study Of Screw-Shaped Titanium Implants With Three Different Surface Topographies, Clin. Oral. Implant. Res. (1995); 6:24-30; Quintessence Publishing Co., Inc., Carol Stream, Illinois.
103Wennerberg, A., et al., Bone Tissue Response To Commercially Pure Titanium Implants Blasted With Fine And Coarse Particles Of Aluminum Oxide., Int. J. Oral Maxillofac. Implants (1996) 1:38-45; Quintessence Publishing Co., Inc., Carol Stream, Illinois.
104Wennerberg, A., et al., Design and Surface Characteristics of 13 Commercially Available Oral Implant Systems, Int. J. Oral Maxillofac. Implants (1993); 8:622-633; Quintessence Publishing Co., Inc., Carol Stream, Illinois.
105Wennerberg, A., et al., Torque And Histomorphometric Evaluation Of C.P. Titanium Screws Blasted With 25- and 75-Microns-Sized Particles Of Al2O3, J Biomed. Materials Res. (1996) 2:251-60; John Wiley & Sons, Hoboken, New Jersey.
106Wennerberg, A.; On Surface Roughness and Implant Incorporation; Dept. Biomaterials & Handicap Research, Institute for Surgical Sciences, Dept. of Prosthetic Dentistry, Göteborg University, Göteborg, Sweden (1996).
107Wennerberg, A.; T. Albrektsson; B. Andersson; J. J. Krol; A Histomorphometric and Removal Torque Study of Screw-Shaped Titanium Implants with Three Different Surface Topographies; Clinical Oral Implants Research; 6:24-30 (1995), Blackwell Munksgaard, Frederiksberg C, Denmark.
108Wennerberg, A; T. Albrektsson; B. Andersson; Design and Surface Characteristics of 13 Commercially Available Oral Implant Systems; Int'l J. of Oral & Maxillofacial Implants; 6:622-633 (1993); Quintessence Publishing, Hanover Park, IL, USA.
109Wennerberg, et al., "Design and Surface Characteristics of 13 Commercially Available Oral Implant Systems", International Journal of Oral & Maxillofacial Implants, 8:622-633.
110Wennerberg, et al., 1993, "Design and Surface Characteristics of 13 Commercially Available Oral Implant Systems", International Journal of Oral & Maxillofacial Implants, 8:622-633.
111Wismeijer, D., et al., Patient Satisfaction With Overdentures Supported by One-Stage TPS Implants, Int J. Oral Maxillofac. Implants. (1992); 1: 51-55; Quintessence Publishing Co., Inc., Carol Stream, Illinois.
112Zablotsky, M., et al., Histological And Clinical Comparisons Of Guided Tissue Regeneration On Dehisced Hydroxyapatite-Coated And Titanium Endosseous Implant Surfaces: A Pilot Study, Int. J Oral Maxillofac. Implants. (1991); 3:294-303; Quintessence Publishing Co., Inc., Carol Stream, Illinois.
113Zablotsky, M., et al., Hydroxyapatite Coatings In Implant Dentistry, Implant Dent. (1992); 4:253-257; Lippincott, Williams & Wilkins, Hagerstown, Maryland.
114Zablotsky, M., et al., The Macroscopic, Microscopic And Spectrometric Effects Of Various Chemotherapeutic Agents On The Plasma-Sprayed Hydroxyapatite-Coated Implant Surface, Clin. Oral Implants Res. (1992); 4:189-98; Blackwell Publishing Ltd., Oxford, United Kingdom.
115Zablotsky, M., HA Coatings In Implant Dentistry: Hype, Hysteria, Or Clinical Reality?, Pract. Periodontics Aesthet. Dent. (1994); 2:60-65; USA.
Classifications
U.S. Classification433/173
International ClassificationA61C8/00
Cooperative ClassificationA61C8/0018, A61C8/0012, A61C8/005, A61C8/006, A61C8/0068, A61C8/0075, A61C8/0077
European ClassificationA61C8/00G2, A61C8/00E, A61C8/00G1, A61C8/00F
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