|Publication number||USRE33796 E|
|Application number||US 07/254,414|
|Publication date||Jan 14, 1992|
|Filing date||Oct 5, 1988|
|Priority date||Jan 28, 1987|
|Publication number||07254414, 254414, US RE33796 E, US RE33796E, US-E-RE33796, USRE33796 E, USRE33796E|
|Inventors||Gerald A. Niznick|
|Original Assignee||Core-Vent Corporation|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (48), Non-Patent Citations (10), Referenced by (22), Classifications (5), Legal Events (3)|
|External Links: USPTO, USPTO Assignment, Espacenet|
This invention relates to a coping insert, preferably a one-piece coping insert, and preferably a thermoplastic coping insert, adapted for insertion into a dental implant anchoring means. The insert comprises shaft means adapted for insertion into shaft-receiving means in a dental implant anchoring means. The shaft means can be of substantially uniform diameter along its entire length, or can have two or more sections of different diameters to fit into implants with shafts having sections of corresponding dimensions.
Atop, and joined to the shaft means, is abutment head means. The abutment head means is preferably a size and shape to conform to, or complement or fit flushly with the abutting surface of a dental implant anchoring means when the shaft of the coping insert is inserted into the implant. The abutment head means can have a cylindrical cross-section, or a frustoconical cross-section, tapering upwardly and outwardly from the base of the abutment head means where the abutment head means joins to the shaft means.
Joined to and atop the abutment head means, in preferred embodiments, is a preferentially bendable restriction means that is integral with the insert. The restriction means links the abutment head means to means for joining the insert means to, and supporting dental prosthesis means such as a tooth or a bridge. The dental prosthesis-engaging and supporting means is, in preferred embodiments, a frustoconical post that can, in some embodiments, taper inwardly and upwardly from the restriction means. The restriction means is of sufficient size and shape to bend preferentially when the insert is thermoplastic, and is heated to the softening temperature of the thermoplastic from which the insert is made.
In preferred embodiments, the shaft means can include one or more partially or completely circumferential grooves or score lines to facilitate severing a portion from the shaft means to shorten its length. Similarly, the dental prosthesis engaging means atop the restriction means can include one or more partially or completely circumferential grooves or score lines to facilitate severing and removing a portion of the prosthesis engaging means, preferably in a plane perpendicular to the longitudinal axis of the dental prosthesis engaging means. The dental prosthesis engaging/supporting means can also include one or more flattened side areas to prevent a prosthesis mounted thereon from moving, as, for example, by rotation, from its desired position.
The invention can better be understood by reference to the drawings in which:
FIG. 1 is a perspective view of a first embodiment of the coping insert of this invention;
FIG. 2 is a perspective view of a second embodiment of the coping insert of this invention;
FIG. 3 is a perspective view of a third embodiment of the coping insert of this invention;
FIG. 4 is a perspective view of a fourth embodiment of the coping insert of this invention; and
FIG. 5 is a perspective view of a fifth embodiment of the coping insert of this invention.
FIG. 1 shows a one-piece, thermoplastic coping insert, generally designated 10, including shaft 11 adapted for insertion into a passage inside a dental implant anchoring means. Circumferential grooves 12 and 13 facilitate severing a portion of shaft 11 to shorten its length, as necessary, to fit within the shaft-receiving passage in the dental implant anchoring means. Joined to and atop shaft 11 is abutment head portion 26 that includes planar bottom surface 25, cylindrical-shaped portion 15 contiguous with the edge of botto surface 25 and conical surface 14 slanting upwardly and outwardly from surface 25. Contiguous with conical surface 14 is cylindrical-shaped surface 16.
Restriction 17 is of a size and shape, here with a rounded, concave profile, to facilitate preferential bending at restriction 17 when insert 10 is heated to the softening temperature of the thermoplastic material from which insert 10 is made. At the softening temperature of thermoplastic insert 10, post portion 27 can be moved to a desired angle or attitude, but will not itself bend or distort. After insert 10 cools to a temperature below the softening point of the thermoplastic, post 27 remains at the desired angle or attitude. Since insert 10 is made from a thermoplastic such as acrylic, the insert can be reheated, and post 27 moved repeatedly as desired or as necessary.
Post 27 atop restriction 17 is frustoconical in shape and includes a flat upper surface 24 and a conical sidewall 18. Conical sidewall 18 can include one or more flat planar areas 19, which restrain rotation of a dental prosthesis joined to post 27. Score lines 20, 21, 22, 23 and 28 facilitate severing portions of post means 27, as necessary, in planes parallel to surface 24, to accommodate dental prostheses of varying sizes and shapes.
FIGS. 2 and 3 show second and third embodiments, respectively, of the thermoplastic coping insert shown in FIG. 1. The embodiment shown in FIG. 2 is identical to that shown in FIG. 1, except that abutment head means 126 has a sidewall 114 that tapers upwardly and outwardly (with respect to base 125), but at a much smaller angle than sidewall 14 (with respect to base 25) in the embodiment shown in FIG. 1. All other numbered parts of the second embodiment (FIG. 2) are the same as those in the first embodiment (FIG. 1). However, the numbers in FIG. 2 are 100 units higher than the corresponding parts in FIG. 2. For example, part 111 in FIG. 2 is the same as part 11 in FIG. 1.
The third embodiment shown in FIG. 3 is identical to the first embodiment shown in FIG. 1, except that the abutment head 214 has a substantially cylindrical cross-section, and does not taper outwardly and upwardly from its base 225. All other numbered parts of the third embodiment (FIG. 3) are the same as those in the first embodiment (FIG. 1), except that the numbers in FIG. 3 are 200 units higher than the corresponding parts in FIG. 1. For example, part 211 in FIG 3 is the same as part 11 in FIG. 1.
The fourth embodiment shown in FIG. 4 is identical to the first embodiment shown in FIG. 1, except that shaft 31 has two portions 330 and 331 that differ from one another in diameter to complement, and fit within a passage inside a dental implant anchoring means having two regions of complementary diameters. All of the numbered parts of the fourth embodiment (FIG. 4) are the same as those in the first embodiment (FIG. 1), except that the numbers in FIG. 4 are 300 units higher than the corresponding parts in FIG. 1. For example, part 311 in FIG. 4 is the same as part 11 in FIG. 1.
The fifth embodiment shown in FIG. 5 is identical to that fourth embodiment shown in FIG. 4, except that abutment head 414 has a substantially planar upper surface 440. Substantially planar surface 440 is adapted to receive a screw or other casting support that can be inserted in a hole formed by drilling or otherwise into substantially planar surface 440. A dental prosthesis can then be cast around this insert, and the abutment head 414 can be molded or otherwise shaped to complement and accommodate a desired dental prosthesis joined to such a prosthesis-supporting member. All of the numbered parts of this fifth embodiment (FIG. 5) are the same as those in the fourth embodiment (FIG. 4), except that the numbers in FIG. 5 are 100 units higher than the corresponding parts in FIG. 4. For example, part 414 in FIG. 5 is the same as part 314 in FIG. 4.
The new thermoplastic coping inserts have several advantages. These inserts have no undercut portion above the shaft, and fit flushly with the top of the dental implant anchoring means that they are adapted to be inserted into. These inserts can be bent and rebent repeatedly to any desired angle without distorting the abutment head, or post, and the post can be cut and shaped as desired to form a pattern for fabrication of a cast metal post to receive and support prostheses of substantially virtually all sizes and shapes, such as crowns designed to extend under gum tissue. Moreover, these inserts can be used in either direct or indirect methods for molding dental prostheses.
In the direct molding of dental prostheses, the pattern o prosthesis-engaging and supporting means is modified using the implant, tissue and adjacent structures in a patient's mouth as guides for the amount of bending and bulk removal.
In the indirect molding methods, the unmodified coping insert is placed in an implant, an impression is made of the affected area, and the insert is removed from the implant and placed into the negative opening in the impression. An appropriate replica of the top of the implant is placed on the protruding shaft of the insert, and a mixture of stone is poured into the impression to create a replica of the affected mouth area. The insert can then be modified outside the mouth, and the prosthesis can be cast in appropriate dental alloys such as gold. The modified prosthesis-engaging means can then be cemented into the implant in the patient's mouth, and a prosthesis joined to it.
The indirect method has several advantages. The patient spends less time in a dentist's office; the indirect method makes it easier to form a prosthesis of ideal size and shape than the direct method; and the insert and dental prosthesis can be formed during the healing period following insertion of the implant in the jaw of a patient, further shortening overall patient treatment time.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US711324 *||Feb 15, 1902||Oct 14, 1902||William Peter Lacy||Artificial denture.|
|US866304 *||Apr 18, 1904||Sep 17, 1907||Finis E Roach||Removable artificial denture.|
|US2112007 *||Jan 16, 1937||Mar 22, 1938||Adams Pinkney B||Anchoring means for false teeth|
|US2347567 *||Mar 11, 1943||Apr 25, 1944||Kresse Edward J||Dental implant|
|US2609604 *||Feb 14, 1949||Sep 9, 1952||Sprague Boyd F||Dental screw insert|
|US2744141 *||Jun 26, 1951||May 1, 1956||Norwich Pharma Co||Method of preparing saturated aliphatic beta-secondary- and tertiary-amino alcohols|
|US3435526 *||Feb 13, 1967||Apr 1, 1969||Heli Coil Corp||Device for securing an artificial tooth to the bone structure of a human jaw|
|US3499222 *||Aug 17, 1965||Mar 10, 1970||Leonard I Linkow||Intra-osseous pins and posts and their use and techniques thereof|
|US3732621 *||Mar 12, 1971||May 15, 1973||Aga Ab||Permanently implantable fixture means for prothesis and the like|
|US3787975 *||Sep 18, 1972||Jan 29, 1974||Zuest M||Anchor for attaching dental partial or full artificial denture|
|US3849888 *||Oct 19, 1973||Nov 26, 1974||Oratronics Inc||Bone adapting tissue packing post system|
|US4016651 *||Feb 18, 1975||Apr 12, 1977||Kyoto Ceramic Co., Ltd.||Device for implanting an artificial endosseous element of ceramics and an implant method for use of the device|
|US4053982 *||Mar 23, 1976||Oct 18, 1977||Bernard Weissman||Dental anchor|
|US4109383 *||Jun 21, 1976||Aug 29, 1978||Reed Gerald M||Dental implant bender|
|US4177562 *||May 2, 1977||Dec 11, 1979||Miller Alvin L||Dental implant and method of inserting the same|
|US4180910 *||Oct 13, 1978||Jan 1, 1980||Institut Straumann Ag||Implant for an artificial tooth|
|US4187609 *||Jul 18, 1978||Feb 12, 1980||Edelman Alfred E||Submerged functional implant and method|
|US4195367 *||Mar 18, 1977||Apr 1, 1980||Werner Kraus||Long-term endoprosthesis|
|US4204321 *||Mar 24, 1978||May 27, 1980||Scott Edward S||Dental post|
|US4259072 *||Jul 25, 1979||Mar 31, 1981||Kyoto Ceramic Co., Ltd.||Ceramic endosseous implant|
|US4290755 *||Mar 5, 1979||Sep 22, 1981||Scott Edward S||Dental post and method of installing|
|US4302188 *||Jan 24, 1980||Nov 24, 1981||Bio-Dynamics, Inc.||Prosthetic dental implants|
|US4334865 *||Oct 30, 1980||Jun 15, 1982||Borle Jean Pierre||Dental obturation screw|
|US4359318 *||Dec 18, 1981||Nov 16, 1982||Neal Gittleman||Dental implant|
|US4416629 *||Jul 6, 1982||Nov 22, 1983||Mozsary Peter G||Osseointerfaced implanted artificial tooth|
|US4431416 *||Apr 29, 1982||Feb 14, 1984||A & L Investment Company||Endosseous dental implant system for overdenture retention, crown and bridge support|
|US4468200 *||Nov 7, 1983||Aug 28, 1984||Feldmuhle Aktiengesellschaft||Helical mandibular implant|
|US4488875 *||Oct 7, 1983||Dec 18, 1984||A&L Investment Company||Connector for overdenture|
|US4552532 *||Dec 12, 1983||Nov 12, 1985||Mozsary Peter G||Osteocorrective dentoalveolar implant system|
|US4573922 *||Jan 13, 1984||Mar 4, 1986||Bello Lino L||Artificial endo-osseous pillar for supporting fixed prosthetic members|
|US4645453 *||Sep 19, 1985||Feb 24, 1987||Niznick Gerald A||Bendable adapter for dental implant|
|US4668191 *||May 28, 1985||May 26, 1987||Feldmuehle Aktiengesellschaft||Jaw implant for receiving a replacement-tooth holder|
|US4793808 *||May 22, 1986||Dec 27, 1988||Axel Kirsch||Enossal implant|
|US4850870 *||Oct 23, 1987||Jul 25, 1989||Implant Innovations, Inc.||Prosthodontic restoration components|
|CH604674A5 *||Title not available|
|DE2834890A1 *||Aug 9, 1978||May 3, 1979||Straumann Inst Ag||Kieferimplantat|
|DE3027138A1 *||Jul 17, 1980||Dec 3, 1981||Straumann Inst Ag||Einrichtung mit einem implantat und zu dessen befestigung an einem knochen dienenden schrauben und einrichtung zum verbinden zweier durch einen zwischenraum getrennter knochenstuecke|
|DE3423752A1 *||Jun 28, 1984||Oct 24, 1985||Hans Grafelmann||Intraossal leaf implant|
|EP0073177A2 *||Aug 19, 1982||Mar 2, 1983||Institut Straumann Ag||Implant for the attachment of a dental prosthesis|
|GB1203093A *||Title not available|
|GB1291470A *||Title not available|
|GB1352188A *||Title not available|
|GB1544784A *||Title not available|
|JPS4898988A *||Title not available|
|JPS5142665A *||Title not available|
|JPS5283591A *||Title not available|
|JPS6141580A *||Title not available|
|WO1986001705A1 *||Sep 11, 1985||Mar 27, 1986||Albert J Kurpis||Dental implant|
|1||*||Implant Prosthodontics, published by Core Vent Corporation.|
|2||Implant Prosthodontics, published by Core-Vent Corporation.|
|3||*||Osseointegrated Implants in the Treatment of the Edentulous Jaw, by P I Branemark et al., 1977, pp. 24, 25, 29, 31 and 109.|
|4||Osseointegrated Implants in the Treatment of the Edentulous Jaw, by P-I Branemark et al., 1977, pp. 24, 25, 29, 31 and 109.|
|5||*||Osseontegrated Titanium Implants by T. Albrektsson et al., Acta Orthop. Scand. 52, 155 170, 1981, pp. 167 168.|
|6||Osseontegrated Titanium Implants by T. Albrektsson et al., Acta Orthop. Scand. 52, 155-170, 1981, pp. 167-168.|
|7||*||Promotional Literature for Scodenco O SO Attachment System.|
|8||Promotional Literature for Scodenco O-SO Attachment System.|
|9||*||Promotional Literature for Zest Anchor.|
|10||*||The Journal of Prosthetic Dentistry, vol. 50, No. 1, published by C. V. Mosby Company in Jul. 1983.|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US5636989 *||Jan 23, 1995||Jun 10, 1997||Somborac; Milan||Dental implant|
|US5816809 *||Sep 4, 1996||Oct 6, 1998||Genetic Implant Systems, Inc.||Dental prosthesis support device and method of using same|
|US5842865 *||Sep 12, 1997||Dec 1, 1998||Sulzer Calcitek Inc.||Self-tapping implant with multiple concave tapping channels|
|US6205837||May 27, 1999||Mar 27, 2001||Stanley W. Sapkos||Dental prosthesis support device and method of using same|
|US6991462 *||Sep 15, 2003||Jan 31, 2006||Debbie, Llc||Dental implant system and method|
|US7250055||Aug 26, 2003||Jul 31, 2007||Biomet Manufacturing Corp.||Method and apparatus for cement delivering buttress pin|
|US7338286||Nov 13, 2003||Mar 4, 2008||Biomet 3I, Inc.||Dental implant system|
|US7338493||Jun 27, 2003||Mar 4, 2008||Biomet Manufacturing Corp.||Method and apparatus for cementing a screw anchor|
|US7484959||Nov 13, 2003||Feb 3, 2009||Biomet 3I, Llc||Dental implant system|
|US7597557||May 23, 2004||Oct 6, 2009||Nobel Biocare Services Ag||Condensing skeletal implant that facilitate insertions|
|US7806693||Apr 23, 2007||Oct 5, 2010||Nobel Biocare Services Ag||Dental implant|
|US8038442||Apr 23, 2007||Oct 18, 2011||Nobel Biocare Services Ag||Dental implant and dental component connection|
|US8197255||Sep 1, 2009||Jun 12, 2012||Nobel Biocare Services Ag||Condensing skeletal implant that facilitate insertions|
|US8382477||Apr 6, 2012||Feb 26, 2013||Terry B. Philibin||Healing abutment system for bone contouring|
|US8636511||Jan 28, 2009||Jan 28, 2014||Biomet 3I, Llc||Dental implant system|
|US8714977||Nov 26, 2012||May 6, 2014||Nobel Biocare Services Ag||Condensing skeletal implant that facilitate insertions|
|US8764443||Dec 18, 2002||Jul 1, 2014||Nobel Biocare Services Ag||Method for producing a surface structure on an implant, and such an implant|
|US8827703||Dec 18, 2002||Sep 9, 2014||Nobel Biocare Services Ag||Implant, and method and system for producing such an implant|
|US20040063070 *||Sep 15, 2003||Apr 1, 2004||Morgan Vincent J.||Dental implant system and method|
|US20050147942 *||Dec 18, 2002||Jul 7, 2005||Jan Hall||Method for producing a surface structure on an implant, and such an implant|
|US20050260540 *||Dec 18, 2002||Nov 24, 2005||Jan Hall||Implant, and method and system for producing such an implant|
|US20070099152 *||Oct 31, 2005||May 3, 2007||Albert Busch||Dental implant system|
|U.S. Classification||433/173, 433/201.1|
|Jan 17, 1992||FPAY||Fee payment|
Year of fee payment: 4
|Feb 27, 1996||REMI||Maintenance fee reminder mailed|
|Jul 21, 1996||LAPS||Lapse for failure to pay maintenance fees|