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Publication numberUS3863344 A
Publication typeGrant
Publication dateFeb 4, 1975
Filing dateOct 3, 1972
Priority dateOct 6, 1971
Also published asDE2249051A1
Publication numberUS 3863344 A, US 3863344A, US-A-3863344, US3863344 A, US3863344A
InventorsPillet Jean
Original AssigneeRhone Poulenc Sa
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Implantable dental support
US 3863344 A
An implantable support for a dental prosthesis having an implantable body portion, e.g., a stainless steel pin, surrounded by a resilient envelope, e.g., formed of organosilicic elastomer. The outer surface of the envelope is colonizable by the surrounding living tissue e.g., by providing it with a textile sleeve which is colonizable by the tissue of the patient's gum.
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Description  (OCR text may contain errors)

United States Patent 1191 I 1111 3 3,863,344

Pillet 1451 Feb. 4, 1975 [54] IMPLANTABLE DENTAL SUPPORT 3,576,074 4/1971 031111 32/10 A 3,579,642 5/1971 Heffernan et a] 3/I [75] Inventor: Jean Pill, Paris France 3,609,867 10/1971 Hodosh [73] Assignee: Rhone-Poulenc S.A., Paris, France 3,707,006 l2/l972 Bokros 32/10 A [22] Filed: 061. 3, 1972 Primary Examiner-Robert Peshock [21] App], No; 294,546 Attorney, Agent, or FirmCushman, Darby &

Cushman [30] Foreign Application Priority Data 2 i Oct. 6, 1971 France 71.35968 [57] 7 ABSTRACT An implantable support for a dental prosthesis havmg 52 11.8. C1 32/10 A an implantable y P a Stainless Steel p 51 1m. (:1. A6lc 13/00 Surrounded by a resilient envelope, -1 formed of [58] Field of Search 32/10 A; 3/1 gallosilicic elastomer The Outer Surface of the envelope is colonizable by the surrounding living tissue [56] References Cited e.g., by providing it with a textile sleeve which is c010- UNITED STATES PATENTS nizable by the tissue of the patients gum. 3,461,869 8/1969 Hargest 3/1 r 2 Claims, 2 Drawing Figures N r e I l IMPLANTABLE DENTAL SUPPORT The present invention relates to an implantable support for a dental prosthesis.

Dental prosthesis supports of the implantable kind generally consist of metalic pins sunk into the jawbone. The pressure exerted on the bone by these rigid elements brings about a local lysis of the bone tissue which does not allow the desired adherence.

Various devices of mechanical retention have been proposed, for example screws, grids, split pins implanted in the jawbone and rendered integral by their tip, and it has been proposed to cushion the pressure produced by chewing by connecting the prosthesis to its support by a resilient pad.

However, these devices do not prevent the bone lysis upon contact with the implant.

According to the present invention there is provided an implantable support for dental prosthesis comprising an implantable body portion, an elastomer envelope at least partly enclosing said body portion, and an outer surface to said envelope colonizable by living tissue. Such a support does not cause bone lysis and permits efficient securing by colonization and interpenetration. A further advantage of the invention is that the support can take up a well defined position but is sufficiently resilient to deaden and distribute the forces to which it is subjected.

The support can be implanted into the jawbone. after drilling the latter; it can also be postioned in the socket after extraction of a tooth. Thus its external configuration may vary in accordance with the manner of use.

It is, of course, necessary to maintain the support in suitable position until it has consolidated, for example by means of a fixing device of conventional kind which has been prepared and adjusted beforehand. The evelope may also br wholly implanted and enclosed by gingival suture during the colonization period (3 to 5 weeks). This last technique is'particuarly suitable for simple or split pins. During the wating period the colonizable envelope contains a simple filling, e.g., a filament of nylon, fluorinated resin or polyolefin which slides with gentle friction in the jacket. After colonization of the jacket the filling is withdrawn and the final support is forcibly inserted.

When the support has been definitely secrued by penetration of the living tissue into the colonizable surface of its envelope it remains to be capped in accordance with customary techniques. Advantageously the prosthesis is provided with a soft and resilient base enabling the pressure of chewing on the gum to be absorbed, the weak movements transmitted to the support being in turn absorbed by the resilient envelope.

The various portions of the support must, of course, be tolerated by the organism, and be resistant to the buccal environment, and they are made of materials which are know to possess these properties. For example, the pin or grid forming the body portion may be of platinum, tatalum, stainless steel or other material employed in the dental art; the envelope may be of an elastomer (preferably silicone), its surface may-be rendered colonizable by adhesively affixing a textile sheath such as a tubular tricot or a velvet of polyester fibre (polyglycol terephthalate).

The integration of a pin and of the envelope is advantageously ensured by simple mechanical anchoring, the stem of the pine for example being adapted to carry transverse ribs or a thread. Resilient tightening is generally sufficient.

The invention will be better understood from the following description, given merely by way of example, reference being made tothe accompanying drawing, in which: I

FIG. 1 is a schematic cross-sectional elevation of one embodiment of implantable support according to the invention, shown positioned in a jawbone; and

FIG. 2 is a transverse section through the suport of FIG. 1.

The construction illustrated in the drawing includes an implantable-body portion in the form of a stainless steel pin 1, which, for example, may be 1.5 mm in diameter. An elastomer enveloper 2 partly encloses the pin and is itself surround by a glued textile sleeve 3 of crimped polyester velvet. The envelope 2 is closed by a base or stopper 4, the envelope and stopper being formed of silicone elastomer, with the stopper being vulcanised in place. In the drawing the gum of the patient is indicated by the reference numeral 5.

I claim:

1. In a dental endosseous root implant, having a tube able to receive an artificial tooth/supporting pin, said tube being provided with an external surface colonisable by surrounding tissues, the improvement comprising forming said implant as a tubular member closed at one end and formed of a resilient elastomer the external surface of which is covered by a textile sleeve.

2. Implantable support as claimed in claim 1, wherein the elastomer envelope encloses a provisional filling.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3461869 *Apr 5, 1966Aug 19, 1969Bio Medical Systems IncPermanent skin exit device
US3576074 *Jul 15, 1968Apr 27, 1971Silverman Gerald MDental endosseous root implant
US3579642 *Apr 15, 1968May 25, 1971Heffernan Bart THeart valve assembly and method of implanting in the body
US3609867 *Mar 10, 1969Oct 5, 1971Research CorpPlastic bone composition
US3707006 *Aug 26, 1970Dec 26, 1972Gulf Oil CorpOrthopedic device for repair or replacement of bone
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3955280 *Oct 17, 1973May 11, 1976Meer SneerDental implants
US4195409 *Feb 13, 1978Apr 1, 1980Child Laboratories Inc.Dental implant
US4252525 *Dec 17, 1979Feb 24, 1981Child Frank WDental implant
US4270905 *Feb 21, 1979Jun 2, 1981Mohammed M Hamdi AReplacement system for dental and other bone implants
US4439152 *Mar 4, 1982Mar 27, 1984Small Irwin AMethod of jawbone abutment implant for dental prostheses and implant device
US4492577 *Oct 25, 1982Jan 8, 1985Farris Edward TSurgical implants with solid interiors and porous surfaces
US4778388 *Oct 14, 1987Oct 18, 1988Sankin Kogyo Kabushiki KaishaRoot canal posts
US4793808 *May 22, 1986Dec 27, 1988Axel KirschEnossal implant
US4881897 *May 7, 1987Nov 21, 1989Ernst Leitz Wetzlar GmbhTooth-root implant with long-term resistance to repetitive stresses
US4904534 *Jun 23, 1989Feb 27, 1990Kureha Kagaku Kogyo Kabushiki KaishaImplant material
US4938693 *Nov 16, 1988Jul 3, 1990Centar Po Subna Implantologia I Protesirane "Avangard"Dental implantate
US5002488 *Apr 12, 1988Mar 26, 1991Hadaco, Ltd.Dental implants with resorption preventing means
US5032445 *Apr 5, 1989Jul 16, 1991W. L. Gore & AssociatesMethods and articles for treating periodontal disease and bone defects
US5061285 *May 8, 1990Oct 29, 1991Implanto-Lock Gesellschaft mit beschrankter Haftung fur Implantatforschung-und EntwicklungEnossal implant and process for inserting enossal implant into the jawbone
US5093179 *May 7, 1991Mar 3, 1992Scantlebury Todd VMethods and articles for treating periodontal disease and bone defects
US5114343 *Aug 27, 1990May 19, 1992Essential Dental Systems, Inc.Resilient support structure
US5605457 *Feb 13, 1995Feb 25, 1997Crystal Medical Technology, A Division Of Folsom Metal Products, Inc.Implant connector
US5605458 *Mar 6, 1995Feb 25, 1997Crystal Medical Technology, A Division Of Folsom Metal Products, Inc.Negative load flank implant connector
US5639237 *Jun 8, 1995Jun 17, 1997Fontenot; Mark GDental prosthesis having indentations
US6031148 *Apr 2, 1993Feb 29, 2000W. L. Gore & Associates, Inc.Implantable bioabsorbable article
DE3739434A1 *Nov 20, 1987May 26, 1988Isis Int IncDentalimplantat
U.S. Classification433/201.1, 433/173, 433/169
International ClassificationA61C8/00
Cooperative ClassificationA61C8/0012, A61C8/0018
European ClassificationA61C8/00F, A61C8/00E