Patent US5035619A successfully refreshed from Google Patents.
US5035619A
Expired / Lapsed
US
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Anatomical restoration dental implant system with improved healing cap and abutment
Assignee: Individual
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Filing: 1990-09-05
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Granted: 1991-07-30
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Expires: 2010-09-05
Abstract
Abstract A system and method is provided for implanting tooth analogues in the jawbone resulting in aesthetically and functionally desirable gingival tissue contours after restoration. The system permits modification and adaptation of the tooth analogue to meet intraoral demands in a manner similar to that used in the preparation and restoration of natural teeth. The system comprises a standard fixture and cover screw passed through opened gingival tissue and implanted in the jawbone. After the osseointegration of the fixture, the gingiva is reopened, the cover screw removed and a healing cap having a predetermined contour, is attached to the fixture. The reopened gingiva re-heals in a shape determined by the contour of the healing cap. The healing cap is then removed and replaced by an abutment having an emergence profile matching that of the healing cap. An immediate snug fit between the gingival tissues and the abutment is thereby provided at the time of connection of the abutment to the fixture. A crown is removably attached to the abutment by a screw extending through the side of the crown into the abutment. An improved version of the healing cap is a healing cap created in two portions so that one portion around which gingiva tissue regrows remains in the patient and only a second upper portion is removed, and an improved abutment which is engageable with the portion of the healing cap left in the patient is used for the abutment about which the crown is removably attached.
Inventors
- 👤 Fereidoun Daftary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:08
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/008; A61C8/0048; A61C8/005; A61C8/0068; A61C8/0054
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
573 words
A dental implant system implantable in the gingival tissue and the alveolus of the jaw bone comprising: a. an implantable fixture having proximal and distal end portions, the proximal end portion having means for being embedded in opened gingival tissue and the alveolus of the jaw bone, the distal end portion being accessible from the outer surface of the jaw bone, the fixture being made of a substance permitting healing of the opened gingival tissue and growth of the jaw bone about the fixture, the fixture further including a hollow extending from an opening in the distal end portion towards the proximal end portion, the hollow having threads along at least a portion of its length; b. means for sealing the hollow portion of the fixture during a period after implantation in which the jaw bone is growing about the proximal portion of the fixture; c. means for providing a predetermined contour to the gingival tissue adjacent the distal end of the fixture, such that the gingival tissue re-heals in a contour reverse to that of the contour of said means; d. a tooth analogue; e. abutment means for supporting the tooth analogue; f. means for releasibly attaching the tooth analogue to the abutment means; g. said contour means being a two part healing cap further comprising, (i) a first part including a stem having proximal and distal end portions, the proximal portion of the stem having threads which are threadable within the hollow of the implantable fixture, and a frusto-conical segment, the smaller end of the segment being attached to the distal end of the stem, with the axis of the segment being in alignment with the axis of the stem, the frusto-conical segment further including a hollow extending from an opening in the larger end of the segment toward the smaller end of the segment, the hollow having threads along at least a portion of its length, (ii) a second part including a cylindrical segment having proximal and distal ends, the proximal end having a stem extending transversely to the proximal end, the axis of the stem aligned with the axis of the cylindrical segment, the stem having a threaded surface which is threadable within the hollow of the frusto-conical segment, and a screw head segment having a proximal end and a driven end, the driven end cooperable with a driving tool, the proximal end being attached to the distal end of the cylindrical segment, with the axis of the screw head segment being in alignment with the axis of the cylindrical segment; and h. said abutment means further comprising a head segment having a frusto-conical shape, the larger end of the head segment attached to a stem extending transversely to the larger end, the axis of the stem aligned with the axis of the head segment, the stem having a threaded surface which is threadable within the hollow of the frusto-conical segment of said healing cap; i. whereby the stem of said healing cap is threaded into the hollow of said fixture and the gingival tissue re-heals in a contour reverse to that of the contour of the frusto-conical portion of the healing cap, and thereafter the second part of the healing cap is unscrewed from the first part of the healing cap and the stem of said abutment means is screwed into the frusto-conical portion of the healing cap and the tooth analogue is attached to the abutment means.
Claim 2
Dependent Claim
573 words
A dental implant system implantable in the gingival tissue and the alveolus of the jaw bone comprising: a. an implantable fixture having proximal and distal end portions, the proximal end portion having means for being embedded in opened gingival tissue and the alveolus of the jaw bone, the distal end portion being accessible from the outer surface of the jaw bone, the fixture being made of a substance permitting healing of the opened gingival tissue and growth of the jaw bone about the fixture, the fixture further including a hollow extending from an opening in the distal end portion towards the proximal end portion, the hollow having threads along at least a portion of its length; b. means for sealing the hollow portion of the fixture during a period after implantation in which the jaw bone is growing about the proximal portion of the fixture; c. means for providing a predetermined contour to the gingival tissue adjacent the distal end of the fixture, such that the gingival tissue re-heals in a contour reverse to that of the contour of said means; d. a tooth analogue; e. abutment means for supporting the tooth analogue; f. means for releasibly attaching the tooth analogue to the abutment means; g. said contour means being a two part healing cap further comprising, (i) a first part including a stem having proximal and distal end portions, the proximal portion of the stem having threads which are threadable within the hollow of the implantable fixture, and a frusto-conical segment, the smaller end of the segment being attached to the distal end of the stem, with the axis of the segment being in alignment with the axis of the stem, the frusto-conical segment further including a hollow extending from an opening in the larger end of the segment toward the smaller end of the segment, the hollow having threads along at least a portion of its length, (ii) a second part including a cylindrical segment having proximal and distal ends, the proximal end having a stem extending transversely to the proximal end, the axis of the stem aligned with the axis of the cylindrical segment, the stem having a threaded surface which is threadable within the hollow of the frusto-conical segment, and a screw head segment having a proximal end and a driven end, the driven end cooperable with a driving tool, the proximal end being attached to the distal end of the cylindrical segment, with the axis of the screw head segment being in alignment with the axis of the cylindrical segment; and h. said abutment means further comprising a head segment having a frusto-conical shape, the larger end of the head segment attached to a stem extending transversely to the larger end, the axis of the stem aligned with the axis of the head segment, the stem having a threaded surface which is threadable within the hollow of the frusto-conical segment of said healing cap; i. whereby the stem of said healing cap is threaded into the hollow of said fixture and the gingival tissue re-heals in a contour reverse to that of the contour of the frusto-conical portion of the healing cap, and thereafter the second part of the healing cap is unscrewed from the first part of the healing cap and the stem of said abutment means is screwed into the frusto-conical portion of the healing cap and the tooth analogue is attached to the abutment means.
Claim 3
Dependent Claim
27 words
The dental implant system of claim 1 wherein the tooth analogue comprises a crown having a hollow interior adapted to fit on a portion of the abutment.
Claim 4
Dependent Claim
110 words
The dental implant system of claim 2 wherein the means for releasibly attaching the crown to the abutment comprises: a. a threaded hollow in the side of the abutment means; b. an opening extending laterally through the side of the crown, the crown opening alignable with the threaded hollow in the side of the abutment means; and c. a holding screw having a threaded end portion and a driven end portion, the threaded end portion passing through the opening in the side of the crown and threaded in the opening in the side of the abutment, the driven end portion cooperable with a driving tool and engagable with the crown.
Claim 5
Dependent Claim
22 words
The dental implant system of claim 1 wherein the means for releasibly attaching the tooth analogue to the abutment includes an adhesive.
Claim 6
Dependent Claim
78 words
The dental implant system of claim 1 wherein said healing cap additionally comprises a base, the base having a cylindrical shape with proximal and distal ends, the proximal end of the base being attached to the distal end portion of said stem, and the distal end of the base being attached to the smaller end of said frusto-conical segment, with the axis of the base being in alignment with the axis of said stem and said frusto-conical segment.
Claim 7
Dependent Claim
48 words
The dental implant system of claims 1 or 5 wherein regarding said healing cap, the exterior of the sidewall of said frusto-conical segment extends outward from the smaller end of said segment at an angle of between 45 degrees and 65 degrees to the axis of said segment.
Claim 8
Dependent Claim
41 words
The dental implant system of claims 1 or 5 wherein regarding said healing cap, at the juncture between said screwhead segment and said cylindrical segment, the circumference of said screwhead segment is the same as the circumference of said cylindrical segment.
Claim 9
Dependent Claim
51 words
The dental implant system of claims 1 or 5 wherein regarding said healing cap, when the first part is screwed into the second part, at the juncture between said cylindrical segment and said frusto-conical segment, the circumference of said cylindrical segment is the same as the circumference of said frusto-conical segment.
Claim 10
Dependent Claim
40 words
The dental implant system of claim 1 wherein the larger end of the frusto-conical segment of said healing cap is larger than the larger end of the head segment of said abutment means thereby creating a shoulder at their juncture.
Claim 11
Dependent Claim
255 words
A two part healing cap for use with an implantable fixture having an open end and a threaded hollow, the healing cap comprising: a. a first part further comprising, (i) a stem having proximal and distal end portions, the proximal end portion being threadable within the hollow of the implantable fixture thereby sealing the fixture; (ii) a divergent segment having frusto-conical shape, the smaller end of the segment being attached to distal end of the stem, with the axis of the segment being in alignment with the axis of the stem; (iii) the divergent segment further including a hollow extending from an opening in the larger end of the segment toward the smaller end of the segment, the hollow having threads along at least a portion of its length, b. a second part further comprising, (i) a cylindrical segment having proximal and distal ends, the proximal end having a stem extending transversely to the proximal end, the axis of the stem aligned with the axis of the cylindrical segment, the stem having a threaded surface which is threadable within the hollow of the divergent segment, with the axis of the cylindrical segment being in alignment with the axis of the divergent segment, and (ii) a screw head segment having a proximal end and a driven end, the driven end cooperable with a driving tool, the proximal end being attached to the distal end of the cylindrical segment, with the axis of the screw head segment being in alignment with the axis of the cylindrical segment.
Claim 12
Dependent Claim
255 words
A two part healing cap for use with an implantable fixture having an open end and a threaded hollow, the healing cap comprising: a. a first part further comprising, (i) a stem having proximal and distal end portions, the proximal end portion being threadable within the hollow of the implantable fixture thereby sealing the fixture; (ii) a divergent segment having frusto-conical shape, the smaller end of the segment being attached to distal end of the stem, with the axis of the segment being in alignment with the axis of the stem; (iii) the divergent segment further including a hollow extending from an opening in the larger end of the segment toward the smaller end of the segment, the hollow having threads along at least a portion of its length, b. a second part further comprising, (i) a cylindrical segment having proximal and distal ends, the proximal end having a stem extending transversely to the proximal end, the axis of the stem aligned with the axis of the cylindrical segment, the stem having a threaded surface which is threadable within the hollow of the divergent segment, with the axis of the cylindrical segment being in alignment with the axis of the divergent segment, and (ii) a screw head segment having a proximal end and a driven end, the driven end cooperable with a driving tool, the proximal end being attached to the distal end of the cylindrical segment, with the axis of the screw head segment being in alignment with the axis of the cylindrical segment.
Claim 13
Dependent Claim
73 words
The healing cap of claim 10 additionally comprising a base, the base having a cylindrical shape with proximal and distal ends, the proximal end of the base being attached to the distal end portion of the stem, and the distal end of the base being attached to the proximal end of the divergent segment, with the axis of the base being in alignment with the axis of the stem and the divergent segment.
Claim 14
Dependent Claim
43 words
The healing cap of claims 10 or 11 wherein the exterior of the sidewall of the divergent segment extends outward from the smaller end of the segment at an angle of between 45 degrees and 65 degrees to the axis of the segment.
Claim 15
Dependent Claim
37 words
The healing cap of claims 10 or 11 wherein, at the juncture of between said screwhead segment and said cylindrical segment, the circumference of said screwhead segment is the same as the circumference of said cylindrical segment.
Claim 16
Dependent Claim
54 words
The healing cap of claims 10 or 11 wherein, when the first part of the healing cap is screwed into the second part of the healing cap, at the juncture between said cylindrical segment and said frusto-conical segment, the circumference of said cylindrical segment is the same as the circumference of said frusto-conical segment.
Claim 17
Independent Claim
276 words
A method for implanting a tooth in the gingival tissue and the alveolus of the jawbone comprising: a. implanting a fixture having proximal and distal end the proximal end portion having means for being embedd in opened gingival tissue and the alveolus of the jaw bone, the distal end portion being accessible from the outer surface of the jaw bone, the fixture being made of a substance perm . healing of the opened gingival tissue and growth of bone about the fixture, the fixture further including hollow extending from the distal end portion toward the proximal end portion, the hollow being threaded along a portion of its length; b. sealing the hollow portion of the fixture with a cover screw a period after implantation in which the jaw bone is about the proximal portion of the fixture and the opened gingival tissue is healing, thereby preventing the jaw bone entering the fixture; c. reopening the gingival tissue and removing the cover screw, replacing the screw with a two part healing cap which includes a driven part and a frusto-conical part which provides a predetermined contour to the gingival tissue adjacent distal end of the fixture after the jaw bone has grown about the proximal portion of the fixture, thereby causing gingival tissue to re-heal in a contour reverse to that the frusto-conical portion of the healing cap provided; d. removing the driven part of the healing cap and replacing it with abutment means engagable with the frusto-conical portion of the healing cap, the abutment means used for supporting a tooth analogue with the implanted fixture; and e. releasibly attaching a tooth analogue to the abutment means.
Claim 18
Independent Claim
276 words
A method for implanting a tooth in the gingival tissue and the alveolus of the jawbone comprising: a. implanting a fixture having proximal and distal end the proximal end portion having means for being embedd in opened gingival tissue and the alveolus of the jaw bone, the distal end portion being accessible from the outer surface of the jaw bone, the fixture being made of a substance perm . healing of the opened gingival tissue and growth of bone about the fixture, the fixture further including hollow extending from the distal end portion toward the proximal end portion, the hollow being threaded along a portion of its length; b. sealing the hollow portion of the fixture with a cover screw a period after implantation in which the jaw bone is about the proximal portion of the fixture and the opened gingival tissue is healing, thereby preventing the jaw bone entering the fixture; c. reopening the gingival tissue and removing the cover screw, replacing the screw with a two part healing cap which includes a driven part and a frusto-conical part which provides a predetermined contour to the gingival tissue adjacent distal end of the fixture after the jaw bone has grown about the proximal portion of the fixture, thereby causing gingival tissue to re-heal in a contour reverse to that the frusto-conical portion of the healing cap provided; d. removing the driven part of the healing cap and replacing it with abutment means engagable with the frusto-conical portion of the healing cap, the abutment means used for supporting a tooth analogue with the implanted fixture; and e. releasibly attaching a tooth analogue to the abutment means.
Claim 19
Dependent Claim
205 words
A two part abutment device for use with an implantable fixture having an open end and a threaded hollow, the abutment device comprising: a. a first part further comprising, (i) a stem having proximal and distal end portions, the proximal end portion being threadable within the hollow of the implantable fixture thereby sealing the fixture; (ii) a divergent segment having frusto-conical shape, the smaller end of the segment being attached to the distal end of the stem, with the axis of the segment being in alignment with the axis of the stem; (iii) the divergent segment further including a hollow extending from an opening in the larger end of the segment toward the smaller end of the segment, the hollow having threads along at least a portion of its length; and b. a second part being a head segment having a frusto-conical shape, the larger end of the head segment attached to a stem extending transversely to the larger end, the axis of the stem aligned with the axis of the head segment, the stem having a threaded surface which is threadable within the hollow of the divergent segment, with the axis of the head segment being aligned with the axis of the divergent segment.
Claim 20
Dependent Claim
205 words
A two part abutment device for use with an implantable fixture having an open end and a threaded hollow, the abutment device comprising: a. a first part further comprising, (i) a stem having proximal and distal end portions, the proximal end portion being threadable within the hollow of the implantable fixture thereby sealing the fixture; (ii) a divergent segment having frusto-conical shape, the smaller end of the segment being attached to the distal end of the stem, with the axis of the segment being in alignment with the axis of the stem; (iii) the divergent segment further including a hollow extending from an opening in the larger end of the segment toward the smaller end of the segment, the hollow having threads along at least a portion of its length; and b. a second part being a head segment having a frusto-conical shape, the larger end of the head segment attached to a stem extending transversely to the larger end, the axis of the stem aligned with the axis of the head segment, the stem having a threaded surface which is threadable within the hollow of the divergent segment, with the axis of the head segment being aligned with the axis of the divergent segment.
Claim 21
Dependent Claim
41 words
The abutment device of claim 16 wherein when the first part is screwed into the second part, the larger end of the divergent segment is larger than the larger end of the head segment thereby creating a shoulder at their juncture.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-07-29 | 1995-01-28 | 1995-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-29 | 1999-01-28 | 1999-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-29 | 2003-01-28 | 2003-07-30 | $7700.00 | Window Closed / Lapsed |