US3981079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental implant and method of mounting the same in the jaw bone
Assignee: Individual
•
Filing: 1973-08-23
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Granted: 1976-09-21
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Expires: 1993-08-23
Abstract
Abstract A dental implant for maintaining a dental prosthetic device in a fixed relation with respect to a jaw bone includes a support post in the form of an internally threaded hollow cylindrical sleeve. The support post is introduced into a complementay cavity formed in the region of the crest of the jaw bone. The support post is provided with at least partially threaded apertures which are spaced from each other along and angularly displaced from each other about the periphery of the support post. Self-tapping anchoring screws extend through preformed blind holes drilled in the jaw bone with the assistance of a jig forming part of the present invention. The preformed holes extend in a direction substantially normal to the support post and are aligned with the apertures in the latter. The anchoring screws threadedly engage the bone and the threaded portions of the support post without extending beyond the preformed blind holes. In this manner, the anchoring screws anchor and stabilize the support post in the jaw bone. The support post has a free end externally accessible in the region of the crest of the jaw bone for mounting a prosthetic device thereon. A jig and method of mounting the implant in the jaw bone is also described.
Inventors
- 👤 Joseph J. Lenczycki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:29
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/001; A61C1/00; A61C1/08; A61C1/082; A61C1/084
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
193 words
Dental implant assembly for maintaining a dental prosthetic device in fixed relation with respect to a jaw bone, the implant assembly comprising a support post adapted to be introduced into a complementary cavity formed in the region of the crest of the jaw bone, said support post being provided with at least one transverse aperture formed therein at an end of said support post adapted to be disposed within said cavity; at least one anchoring screw adapted to extend through a hole drilled in the jaw bone in a direction substantially normal to said support post to threadedly engage the jaw bone and said transverse aperture formed in said support post, whereby said anchoring screw anchors and stabilizes said support post in the jaw bone; said support post being formed as a hollow cylindrical sleeve; and said at least one transverse aperture being formed through diametrically opposed wall portions of said sleeve, the aperture formed in the leading wall portion through which the anchoring screw first advances being unthreaded, and the aperture formed in the trailing wall portion into which the anchoring screw subsequently advances being threaded to threadedly receive said anchoring screw.
Claim 2
Dependent Claim
193 words
Dental implant assembly for maintaining a dental prosthetic device in fixed relation with respect to a jaw bone, the implant assembly comprising a support post adapted to be introduced into a complementary cavity formed in the region of the crest of the jaw bone, said support post being provided with at least one transverse aperture formed therein at an end of said support post adapted to be disposed within said cavity; at least one anchoring screw adapted to extend through a hole drilled in the jaw bone in a direction substantially normal to said support post to threadedly engage the jaw bone and said transverse aperture formed in said support post, whereby said anchoring screw anchors and stabilizes said support post in the jaw bone; said support post being formed as a hollow cylindrical sleeve; and said at least one transverse aperture being formed through diametrically opposed wall portions of said sleeve, the aperture formed in the leading wall portion through which the anchoring screw first advances being unthreaded, and the aperture formed in the trailing wall portion into which the anchoring screw subsequently advances being threaded to threadedly receive said anchoring screw.
Claim 3
Dependent Claim
30 words
Dental implant assembly as defined in claim 1, wherein said sleeve is provided with an internal thread adapted to threadedly engage a threaded shank adapted to support a prosthetic device.
Claim 4
Dependent Claim
36 words
Dental implant assembly as defined in claim 1, wherein a plurality of transverse apertures are provided each adapted to receive another transverse anchoring screw, said transverse apertures being spaced from each other along said support post.
Claim 5
Dependent Claim
22 words
Dental implant assembly as defined in claim 3, wherein said transverse apertures are angularly displaced from one another about said support post.
Claim 6
Dependent Claim
14 words
Dental implant assembly as defined in claim 1, wherein said anchoring screw is self-threading.
Claim 7
Dependent Claim
39 words
Dental implant assembly as defined in claim 1, wherein said anchoring screw is provided with an enlarged free end to form a finger grip to facilitate threadedly advancing said anchoring screw through the jaw bone and said transverse aperture.
Claim 8
Dependent Claim
34 words
Dental implant assembly as defined in claim 1, wherein said anchoring screw has an oversized length and is adapted to be cut flush with the jaw bone subsequent to desired advancement into the latter.
Claim 9
Dependent Claim
38 words
Dental implant assembly as defined in claim 1, wherein said support post has an oversized length and extends exteriorly of the cavity, said support being adapted to be cut substantially flush with the crest of the jaw bone.
Claim 10
Dependent Claim
41 words
Dental implant assembly as defined in claim 1, wherein said support post has a free end thereof disposed in the region of the crest of the jaw bone, said free end being provided with alignment means adapted to engage a jig.
Claim 11
Dependent Claim
25 words
Dental implant assembly as defined in claim 9, wherein said alignment means comprises a notch adapted to receive a mating alignment tab of the jig.
Claim 12
Independent Claim
137 words
A method of inserting a dental implant into a jaw bone comprising the steps of drilling a hole into the crest of the jaw bone in a first direction to form a cavity in the jaw bone having an accessible open end; drilling at least one hole in the jaw bone communicating with the cavity in a second direction substantially normal to said first direction; inserting an apertured support post into the cavity through said accessible open end with the aperture therein aligned with the hole drilled in the jaw bone; and threading an anchoring screw through the hole in the jaw bone as well as through the aperture in the screw post; the step of inserting the apertured post into the cavity preceding the step of drilling said at least one hole in said second direction.
Claim 13
Independent Claim
137 words
A method of inserting a dental implant into a jaw bone comprising the steps of drilling a hole into the crest of the jaw bone in a first direction to form a cavity in the jaw bone having an accessible open end; drilling at least one hole in the jaw bone communicating with the cavity in a second direction substantially normal to said first direction; inserting an apertured support post into the cavity through said accessible open end with the aperture therein aligned with the hole drilled in the jaw bone; and threading an anchoring screw through the hole in the jaw bone as well as through the aperture in the screw post; the step of inserting the apertured post into the cavity preceding the step of drilling said at least one hole in said second direction.
Claim 14
Dependent Claim
28 words
A method as defined in claim 11, wherein a plurality of transverse holes are drilled in the jaw bone in alignment with corresponding holes in the support post.
Claim 15
Dependent Claim
32 words
A method as defined in claim 12, wherein a plurality of threaded screws are threaded through the transverse holes in the jaw bone and through the corresponding apertures in the support post.
Claim 16
Dependent Claim
70 words
A method as defined in claim 11, wherein said step of drilling said at least one hole in said second direction comprises the step of engaging a jig with the support post, the jig being provided with at least one guide hole aligned with said hole in said second direction and a corresponding aperture in the support post; and advancing a drill bit through said at last one guide hole.
Claim 17
Dependent Claim
42 words
A method as defined in claim 11, wherein the support post is oversized to extend beyond the crest of the jaw bone, the method further comprising the step of severing substantially the portion of the support post which extends beyond the crest.
Claim 18
Dependent Claim
45 words
A method as defined in claim 11, wherein said at least one hole in the jaw bone is drilled to only penetrate one surface of the jaw bone, whereby a blind hole is formed, said anchoring screw threadedly advancing without extending beyond said blind hole.
Claim 19
Independent Claim
148 words
A method of inserting a dental implant into a jaw bone comprising the steps of drilling a hole into the crest of the jaw bone in a first direction to form a cavity in the jaw bone having an accessible open end; drilling at least one hole in the jaw bone communicating with the cavity in a second direction substantially normal to said first direction; inserting an apertured support post into the cavity through said accessible open end with the aperture therein aligned with the hole drilled in the jaw bone; threading an anchoring screw through the hole in the jaw bone as well as through the aperture in the screw post, the anchoring screw being oversized and extending beyond the jaw bone when fully threaded into the latter; and severing substantially a portion of the support post which extends beyond the jaw bone to be flush therewith.
Claim 20
Independent Claim
148 words
A method of inserting a dental implant into a jaw bone comprising the steps of drilling a hole into the crest of the jaw bone in a first direction to form a cavity in the jaw bone having an accessible open end; drilling at least one hole in the jaw bone communicating with the cavity in a second direction substantially normal to said first direction; inserting an apertured support post into the cavity through said accessible open end with the aperture therein aligned with the hole drilled in the jaw bone; threading an anchoring screw through the hole in the jaw bone as well as through the aperture in the screw post, the anchoring screw being oversized and extending beyond the jaw bone when fully threaded into the latter; and severing substantially a portion of the support post which extends beyond the jaw bone to be flush therewith.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-21 | 1980-03-22 | 1980-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-21 | 1984-03-22 | 1984-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-21 | 1988-03-22 | 1988-09-21 | $7700.00 | Window Closed / Lapsed |