Patent US2055587A successfully refreshed from Google Patents.
US4416629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Osseointerfaced implanted artificial tooth
Assignee: FAIR Inc 101 BALA AVE BALA CYNWYD PA 19004 A CORP OF
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Filing: 1982-07-06
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Granted: 1983-11-22
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Expires: 2002-07-06
Abstract
Abstract An artificial tooth implantable in a jaw bone utilizing a tooth root having distal and proximal end portions. The distal end portion of the root extends into the jaw bone and is fixed to the jaw bone. A hollow root extends from the proximal end portion of the root which is accessible from the outer surface of the jaw bone, toward the distal end portion of the root. A post has a first end portion which extends into the hollow of the root and is fixed to the root. A second portion of the post extends outwardly from the hollow and has an outer surface which slopes downwardly toward the first portion of the post. A crown is connected to the second portion of the post.
Inventors
- 👤 Peter G. Mozsary
- 👤 Robert E. Lapcevic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:00
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0018; A61C8/0022; A61C8/0048; A61C8/005; A61C8/0066; A61C8/0086
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
184 words
An artificial tooth implantable in a jaw bone comprising: a. an implantable tooth root, said root having a distal end portion intended for extending into the jaw bone and a proximal end portion being accessible from the outer surface of the jaw bone; said root further including a hollow extending from said proximal end portion of said root toward said distal end portion of said root; b. means for fixing said root to the jaw bone; c. a post, said post having a first portion fitting within said hollow of said root and a second portion extending outwardly from said hollow; said second portion having an outer surface which slopes downwardly toward said first portion of said post said second portion of said post further including a base connected to said first portion or said post; a stem extending from said base; and a weakened portion at said connection between said base and stem for breakably connecting said base to said stem; d. means for fixing said first portion of said post within said hollow of said root; e. a crown connected to post.
Claim 2
Dependent Claim
184 words
An artificial tooth implantable in a jaw bone comprising: a. an implantable tooth root, said root having a distal end portion intended for extending into the jaw bone and a proximal end portion being accessible from the outer surface of the jaw bone; said root further including a hollow extending from said proximal end portion of said root toward said distal end portion of said root; b. means for fixing said root to the jaw bone; c. a post, said post having a first portion fitting within said hollow of said root and a second portion extending outwardly from said hollow; said second portion having an outer surface which slopes downwardly toward said first portion of said post said second portion of said post further including a base connected to said first portion or said post; a stem extending from said base; and a weakened portion at said connection between said base and stem for breakably connecting said base to said stem; d. means for fixing said first portion of said post within said hollow of said root; e. a crown connected to post.
Claim 3
Dependent Claim
32 words
The artificial tooth of claim 1 in which said weakened portion at said connection between said base and stem for breakably connecting said base to said stem includes an undercut portion thereat.
Claim 4
Dependent Claim
21 words
The artificial tooth of claim 2 which further comprises a layer of resilient material laminated between said crown and said post.
Claim 5
Dependent Claim
28 words
The artificial tooth of claim 3 in which said second portion of said post, and said layer of resilient material further include means for holding a denture thereto.
Claim 6
Dependent Claim
67 words
The artificial tooth of claim 2 in which said base of said second portion of said post includes a dimension that extends a greater distance transversly in relation to said root than a transverse dimension of said stem of said second portion of said post, said second portion outer surface sloping downwardly toward said post being defined to also slope inwardly toward the center of said post.
Claim 7
Dependent Claim
35 words
The artificial tooth of claim 1 which said post additionally comprises a spacer and means for fixing said spacer adjacent said post between said root and said crown, said spacer providing said sloping outer surface.
Claim 8
Dependent Claim
21 words
The artificial tooth of claim 6 in which said spacer includes means for turning said spacer in relation to said post.
Claim 9
Dependent Claim
31 words
The artificial tooth of claim 7 in which said root includes means for tapping said root in relation to the jaw bone during placement of said root in the jaw bone.
References Cited (Backward Citations)
DE1075791B
Cited
US2857670A
Cited
US2880508A
Cited
US3579831A
Cited
US3589011A
Cited
US3797113A
Cited
US3726011A
Cited
US3955280A
Cited
DE2401323A1
Cited
DE2413883A1
Cited
US3979828A
Cited
US3952414A
Cited
US4086701A
Cited
US4259072A
Cited
US4178686A
Cited
US4195409A
Cited
US4215986A
Cited
US4318696A
Cited
US4270905A
Cited
US4324550A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-21 | 1987-05-23 | 1987-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-21 | 1991-05-23 | 1991-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-21 | 1995-05-23 | 1995-11-22 | $7700.00 | Window Closed / Lapsed |