Source: http://www.google.com/patents/US5368483?dq=6,256,642
Timestamp: 2013-12-13 14:39:16
Document Index: 315402920

Matched Legal Cases: ['art 5', 'art 5', 'art 5', 'art 5', 'art 5', 'art 5', 'art 5', 'art 5', 'art 5', 'art 5', 'art 5']

Patent US5368483 - Device-for fixing a dental prosthesis to a jaw bone - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsThe device for fixing a dental prosthesis has a base which can be inserted into a jaw bone, an abutment and a shell. The base has a hole with a mouth at its end face, with an internal thread and with an extension and has a conical annular surface enclosing the mouth of the hole. The abutment has a thread...http://www.google.com/patents/US5368483?utm_source=gb-gplus-sharePatent US5368483 - Device-for fixing a dental prosthesis to a jaw boneAdvanced Patent SearchPublication numberUS5368483 APublication typeGrantApplication numberUS 08/095,119Publication dateNov 29, 1994Filing dateAug 20, 1993Priority dateJun 14, 1993Fee statusPaidAlso published asEP0629384A1, EP0629384B1Publication number08095119, 095119, US 5368483 A, US 5368483A, US-A-5368483, US5368483 A, US5368483AInventorsUlrich Mundwiler, Franz SutterOriginal AssigneeInstitut Straumann AgExport CitationBiBTeX, EndNote, RefManPatent Citations (6), Non-Patent Citations (6), Referenced by (97), Classifications (11), Legal Events (5) External Links: USPTO, USPTO Assignment, EspacenetDevice-for fixing a dental prosthesis to a jaw boneUS 5368483 AAbstract The device for fixing a dental prosthesis has a base which can be inserted into a jaw bone, an abutment and a shell. The base has a hole with a mouth at its end face, with an internal thread and with an extension and has a conical annular surface enclosing the mouth of the hole. The abutment has a thread part which passes through the shell in the assembled device and is screwed into the internal thread of the base, and an outer part located outside the base and serving for holding a dental prosthesis. In the assembled device, the shell fits into the extension of the hole and rests with a conical outer surface firmly against a conical inner surface of the base. Furthermore, the outer part of the abutment rests with a conical stop surface firmly against the annular surface of the base. In the assembled device, the abutment is connected to the base in a stable manner and covers its end face without leaving gaps.
3. A device as claimed in claim 2, wherein the conical inner surface of the base and the conical outer surface of the shell make angles of at least 5
4. A device as claimed in claim 1, wherein the annular surface and the stop surface make an angle of at least 20 an axis of the device.
7. A device as claimed in claim 6, wherein the two abutting lateral surface sections make, with the annular surface, angles whose sum is 135 to 180
31. A device as claimed in claim 28, wherein the annular surface and the stop surface of the abutment make an angle of at least 20 most 70
The stated lateral surface section of the abutment may be, for example--particularly in the case of a subgingival position of the end face of the base--parallel to the axis of the device and cylindrical. However, particularly in the case of a supragingival position of the end face of the base, the stated lateral surface section may also be conical or may be curved in the axial section, in which case it makes an angle of, preferably, not more than about 30 its end adjacent to the base.
That lateral surface section of the base which is adjacent to the outer edge of the annular surface widens, preferably in a trumpet-like manner, toward the said edge and preferably makes an obtuse angle or possibly approximately a right angle with the annular surface enclosing the mouth of the hole of the base. The lateral surface section of the abutment, which section abuts the outer edge of the annular surface of the base when the device is assembled, preferably makes an acute angle with the annular surface of the base and a stop surface of the abutment, which surface is adjacent to said annular surface. The sum of the two stated angles is preferably at least 135 preferably at most 180 180 abutment are then continuously adjacent to one another in the axial section.
The elongated base 4 has a cylindrical section 4a which is provided with an external thread 4b. Adjacent to the cylindrical section 4a is a section 4c which thickens in a trumpet-like manner away from said section 4a. In axial section, the lateral surface section 4r bordering said section 4c externally is uniformly and continuously curved, as in the case of the surface which borders the stated extension of the hole 1a. At its upper end most greatly inclined relative to the axis 7, the lateral surface section 4r of the section 4c makes an angle of at most 30 example, about 15 base 4 which is located in FIGS. 1 and 2 at the top on the free end of the thickening section 4c forms the end face 4d of said base. The base 4 is provided with a hole 4e which is coaxial with the axis 7, consists of a blind hole and has a mouth in the end face 4d. The hole 4e has a cylindrical base section 4f which is provided, at least in one part, with an internal thread 4g and therefore forms a threaded hole. The hole 4e has, between the internal thread 4g and the end face 4d, an extension 4h which widens toward said end face and is bordered, at least for the most part, by a conical inner surface 4i which makes an angle of, preferably, at least 5 The end face 4d is formed by an end face which encloses the mouth of the hole 4e and consists, at least for the most part, of an annular surface 4k which is inclined away from the axis 7 conically outward toward that end of the base which is opposite the end face 4d. The outer edge 4m of said annular surface also forms the outer edge of the end face 4d. The angle of inclination between the conical annular surface 4k and the axis 7 is about 20 annular surface 4k makes an obtuse angle with that end of the lateral surface section 4r which is adjacent to the outer edge 4m of said annular surface, said lateral surface section being curved in axial section. The cylindrical section 4a of the base 4 furthermore has a hole 4n which is coaxial with the axis 7, consists of a blind hole and has a mouth at that end of the base 4 which is opposite the end face 4d. The cylindrical section 4a is furthermore provided with some holes 4p which pass through its lateral surface and enter the hole 4n. The base 4 consists of a one-piece member comprising a metallic material, namely titanium. The cylindrical section 4a is also provided with, for example, a coating applied by a plasma coating method and likewise consisting of titanium.
The elongated, one-piece, metallic abutment 5 which consists, for example, of titanium, has an inner part 5a and an outer part 5b. If the abutment 5 is connected to the base 4 in the assembled device according to FIG. 2, the inner part 5a is located in the hole 4e of the base 4 while the outer part 5b is arranged outside the base 4. The inner part 5a has a thread part 5c with an external thread 5d and an essentially cylindrical thick part 5e which is rotationally symmetrical with respect to the axis 7 and whose diameter is slightly larger than the external diameter of the external thread 5d. The thick part 5e is provided with a small bevel at its end facing the thread part 5c. The outer part 5d consists of an even thicker covering section 5f adjacent to the thick part 5e. Said covering section is bordered, at its end facing the base 4, by an annular surface, of which at least the outermost part serves as a conical stop surface 5g. This makes the same angle with the axis 7 as the annular surface 4k of the base 4 and rests against the annular surface 4k in the assembled device. The outer edge of the stop surface 5g and the cylindrical lateral surface section 5h of the covering section 5f, which lateral surface section is adjacent to this outer edge, have the same diameter as the outer edge 4m of the annular surface 4k. The lateral surface section 5h makes an acute angle with the stop surface 5g and, in the assembled device, also with the annular surface 4k of the base 4. The sum of this angle and the obtuse angle made by the surfaces 4k and 4r of the base is between 125 and 180 section 5i which tapers away from the covering section 5f is adjacent to said covering section. The conical lateral surface of said end section is connected at its further end by a likewise conical shoulder surface 5k to the cylindrical lateral surface section 5h of the covering section 5f and, together with the shoulder surface 5k, forms a shoulder having an obtuse angle in axial section. The length of the cylindrical lateral surface section 5h and the distance of the shoulder surface 5k from the stop surface 5g is preferably at least 2 mm, preferably up to about 5 mm and, for example, about 3 mm. The abutment 5 is also provided with an axial threaded blind hole 5m which has a mouth at the free end of the end section 5i.
The conical annular surface 4k of the base 4 and the conical stop surface 5g of the abutment are completely rotationally symmetrical with respect to the axis 7 and are completely smooth around said axis, i.e. are not interrupted by slots or grooves or the like. The surfaces 4k, 5g therefore rest against one another, without gaps, around the axis 7 and the mouth of the hole 4e of the base 4. The covering section 5f furthermore covers the end face 4d of the base 4, which end face is present below the gingiva 2, up to the outer edge 4m of the annular surface 4k. The covering section 5f of the abutment abuts the edge 4m of the base 4 essentially without joints and without gaps. At the abutment point--i.e. at the edge 4m--the lateral surface sections 4r and 5h make an angle of between 135 180 of this embodiment of the section 4c of the base 4 and of the abutment covering section 5f covering the latter, it is possible at least substantially to prevent cavities in which bacteria can develop from being formed under the gingiva 2 in the region of the end face 4d of the base during healing and growing together of the previously cut open gingiva 2.
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KGAbutment for an implant systemWO1997014371A1 *Oct 11, 1996Apr 24, 1997Vincenzo GrandeConnector between an implant and an abutmentWO1998023221A1 *Nov 24, 1997Jun 4, 1998Fereidoun DaftaryAnatomical restoration dental implant system for posterior and anterior teethWO2000009031A1 *Aug 12, 1999Feb 24, 2000Don KennardOne-step threaded implantWO2004034919A1 *Oct 15, 2002Apr 29, 2004Don D PopovicDental implant and abutment systemWO2004082503A2 *Mar 18, 2004Sep 30, 2004Cagenix IncUnitary dental implantWO2004082504A2 *Mar 18, 2004Sep 30, 2004Cagenix IncDental implant fixtureWO2009007401A2 *Jul 9, 2008Jan 15, 2009Bange OlofA healing abutment, a screw and a methodWO2010141342A2 *May 28, 2010Dec 9, 2010University Of Maryland, BaltimoreSnap-on two-piece emergence profile healing abutment* Cited by examinerClassifications U.S. Classification433/173International ClassificationA61C8/00Cooperative ClassificationA61C8/0022, A61C8/0086, A61C8/008, A61C8/005, A61C8/0069European ClassificationA61C8/00H, A61C8/00F2, A61C8/00G1, A61C8/00QLegal EventsDateCodeEventDescriptionMay 26, 2006FPAYFee paymentYear of fee payment: 12Feb 8, 2006ASAssignmentOwner name: STRAUMANN HOLDING AG, SWITZERLANDFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:INSTITUT STRAUMANN AG;REEL/FRAME:017546/0232Effective date: 20051115Apr 29, 2002FPAYFee paymentYear of fee payment: 8May 22, 1998FPAYFee paymentYear of fee payment: 4Jul 20, 1993ASAssignmentOwner name: INSTITUT STRAUMANN AG, GERMANYFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SUTTER, FRANZ DR.;MUNDWILER, ULRICH;REEL/FRAME:006702/0145Effective date: 19930707RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google