Patent US3499058A successfully refreshed from Google Patents.
Patent US5437551A successfully refreshed from Google Patents.
US5437551A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental implant post and prosthesis construction
Assignee: Wellesley Research Associates Inc
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Filing: 1993-06-14
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Granted: 1995-08-01
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Expires: 2013-06-14
Abstract
Abstract A dental implant is provided for insertion into the jawbone of a patient for the purpose of building a dental prosthesis thereon. The implant includes a central hole having a wall with first extension for accommodating a dental post having a second extension that frictionally interlock with the first extension. A core can be provided which includes a second central hole having a wall with a third extension for accommodating a dental post having a fourth extension that frictionally interlocks with the third extension.
Inventors
- 👤 Paul R. Chalifoux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:55
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0048; A61C8/005; A61C8/0065; A61C8/0018; A61C8/0057; A61C8/0059; A61C8/006; A61C8/0066; A61C8/0069
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
121 words
A dental system for insertion into a bore of a jaw bone of a patient which comprises: a dental implant adapted to fit in a bore of said jaw bone, said dental implant having a central bore extending from a top surface of said implant through a portion of the vertical height of said implant, at least one first extension extending from and directly attached to a first wall of said central bore, a dental post having a stem section shaped to fit into said central bore and having a second wall with at least one second extension attached directly to said post and positioned to frictionally fit with said first extension to retain said dental post within said central bore.
Claim 2
Dependent Claim
121 words
A dental system for insertion into a bore of a jaw bone of a patient which comprises: a dental implant adapted to fit in a bore of said jaw bone, said dental implant having a central bore extending from a top surface of said implant through a portion of the vertical height of said implant, at least one first extension extending from and directly attached to a first wall of said central bore, a dental post having a stem section shaped to fit into said central bore and having a second wall with at least one second extension attached directly to said post and positioned to frictionally fit with said first extension to retain said dental post within said central bore.
Claim 3
Dependent Claim
34 words
The dental system of claim 1 wherein portions of said wall of said central bore are tapered toward each other and portions of said wall of said dental post are tapered toward each other.
Claim 4
Dependent Claim
23 words
The dental system of claim 2 wherein a plurality of said first extensions are provided about the entire circumference of said central hole.
Claim 5
Dependent Claim
22 words
The dental system of claim 2 wherein a plurality of said second extensions are provided about the entire circumference of said stem.
Claim 6
Dependent Claim
25 words
The dental system of any one of claims 2, 3, or 4 wherein the angle of said taper is between about 2 and 10 degrees.
Claim 7
Dependent Claim
21 words
The dental system of claim 5 wherein each of said extensions extend a length between about 1 micron and 200 microns.
Claim 8
Dependent Claim
21 words
The dental system of claim 5 wherein each of said extensions extend a length between about 0.1 millimeters and 0.5 millimeters.
Claim 9
Dependent Claim
96 words
The dental system of any one of claims 2, 3 and 4 wherein the angle of said taper is between about 2 and 10 degrees and a core having a second central hole, extending from a bottom surface of said core through a portion of a vertical height of said core, at least one third extension extending from and directly attached to a wall of said second hole, and at least one fourth extension extending from and directly attached to a top section of a dental post positioned to frictionally fit with said second central hole.
Claim 10
Dependent Claim
21 words
The dental system of claim 8 wherein each of said extensions extend a length between about 1 micron and 200 microns.
Claim 11
Dependent Claim
21 words
The dental system of claim 8 wherein each of said extensions extend a length between about 0.1 millimeters and 0.5 millimeters.
Claim 12
Dependent Claim
14 words
The dental system of claim 1 wherein said hole is formed from parallel walls.
Claim 13
Dependent Claim
23 words
The dental system of claim 11 wherein a plurality of said first extensions are provided about the entire circumference of said central hole.
Claim 14
Dependent Claim
22 words
The dental system of claim 11 wherein a plurality of said second extensions are provided about the entire circumference of said stem.
Claim 15
Dependent Claim
87 words
The dental system of any one of claims 1, 2, 11, 18, 19, 3, 12, 20, 4 or 13 further comprising a core having a second central hole, extending from a bottom surface of said core through a portion of a vertical height of said core, at least one fourth extension extending from a wall of said second hole, and at least one fifth extension on said top section positioned to frictionally fit with said fourth extension to retain said top section within said second central hole.
Claim 16
Dependent Claim
41 words
The dental system of claim 14 wherein a plurality of said second extensions are provided about the entire circumference of said second central hole and a plurality of said fifth extensions are provided about the entire circumference of said top section.
Claim 17
Dependent Claim
21 words
The dental system of claim 14 wherein each of said extensions extend a length between about 1 micron and 200 microns.
Claim 18
Dependent Claim
21 words
The dental system of claim 14 wherein each of said extensions extend a length between about 0.1 millimeters and 0.5 millimeters.
Claim 19
Dependent Claim
17 words
The dental system of claim 1 wherein said central bore includes slots having walls with third extensions.
Claim 20
Dependent Claim
22 words
The dental system of claim 1 wherein a plurality of said extensions are provided about the entire circumference of said central hole.
Claim 21
Dependent Claim
22 words
The dental system of claim 1 wherein a plurality of said second extensions are provided about the entire circumference of said stem.
Claim 22
Dependent Claim
29 words
The dental system of claim 1 wherein said stem section has at least one slot extending lengthwise through said stem section to form a plurality of spaced apart legs.
Claim 23
Dependent Claim
13 words
The dental system of claim 21 wherein said stem section has one slot.
Claim 24
Dependent Claim
109 words
A dental system for placing a core on a top section of a dental post inserted into an implant in the jaw of a patient which comprises: a core having a central hole, extending from a bottom surface of said core through a portion of a vertical height of said core, at least one first extension extending from and directly attached to a wall of said central hole, portions of said wall being tapered toward each other, and at least one second extension extending from and directly attached to said top section positioned to frictionally fit with said first extension to retain said top section within said central hole.
Claim 25
Dependent Claim
109 words
A dental system for placing a core on a top section of a dental post inserted into an implant in the jaw of a patient which comprises: a core having a central hole, extending from a bottom surface of said core through a portion of a vertical height of said core, at least one first extension extending from and directly attached to a wall of said central hole, portions of said wall being tapered toward each other, and at least one second extension extending from and directly attached to said top section positioned to frictionally fit with said first extension to retain said top section within said central hole.
Claim 26
Dependent Claim
40 words
The dental system of claim 23 wherein a plurality of said first extensions are provided about the entire circumference of said central hole and a plurality of said second extensions are provided about the entire circumference of said top section.
Claim 27
Dependent Claim
35 words
The dental system of any one of claims 1, 2, 11, 18, 19, 3, 12, 20 4, 13, 23 or 24 wherein each of said extensions extend a length between 1 micron and 200 microns.
Claim 28
Dependent Claim
35 words
The dental system of any one of claims 1, 2, 11, 18, 19, 3, 12, 20, 4, 13, 23 or 24 wherein each of said extensions extend a length between 0.1 millimeters and 0.5 millimeters.
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) | 1998-07-31 | 1999-01-30 | 1999-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-07-31 | 2003-01-30 | 2003-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-07-31 | 2007-01-30 | 2007-08-01 | $7700.00 | Window Closed / Lapsed |