Claims
- 1. A dental post shaped to be positioned within a bore of a tooth which comprises:
- a top section
- a lower section attached to said top section, said lower section being formed from a plurality of post subsections having an effective diameter,
- the effective diameter of the subsections decreasing in a vertical direction away from said top section such that the overall surface of the lower section tapers inwardly toward a central axis of said lower section,
- each of said post subsections having a lowermost surface with a diameter larger than a diameter of a root canal subsection adjacent said lower-most surface and a bottom- most subsection having a length which prevents contact of a lowermost surface of each post subsection with a wall of said bore when said post is inserted into said bore.
- 2. The dental post of claim 1 wherein walls of each subsection are parallel.
- 3. The dental post of claim 1 wherein a surface of each subsection are conical having an apex and a base wherein said apex is positioned nearer said top section than said base.
- 4. The dental post of claim 1 wherein walls of each subsection are stepped and parallel.
- 5. The dental post of any one of claims 1,2,3 or 4 wherein cutting extensions are positioned on walls of said subsections.
- 6. The dental post of any one of claims 1,2,3 or 4 having a flange secured to said top section, said flange having at least one hole and a pin extending through said hole at an angle relative to said central axis.
- 7. The dental post of any one of claims 1,2,3 or 4 having a slot extending the length of said lower section and at least one extension on a wall of a subsection.
- 8. The dental post of any one of claims 1,2,3 or 4 having a slot extending the length of said top section and a lower section and at least one extension on a wall of a subsection.
- 9. The dental post of any one of claims 1, 2, 3 or 4 wherein threads are positioned on walls of at least one said subsection.
REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of Ser. No. 08/196,953, filed Feb. 15, 1994, now abandoned which in turn, is a continuation-in-part of Ser. No. 08/075,329 filed Jun. 11, 1993 now U.S. Pat. No. 5,362,237 which, in turn, is a continuation-in-part of Ser. No. 07/908,366 filed Jul. 6, 1992 now U.S. Pat. No. 5,316,478 which, in turn, is a continuation-in-part of Ser. No. 07/969,060 filed Oct. 30, 1992 now U.S. Pat. No. 5,336,092 which, in turn, is a continuation-in-part of Ser. No. 07/896,388, filed Jun. 10, 1992 now U.S. Pat. No. 5,342,200 which, in turn, is a continuation-in-part of Ser. No. 07/739,670 filed Aug. 2, 1991 now U.S. Pat. No. 5,277,583.
US Referenced Citations (4)
Foreign Referenced Citations (5)
Number |
Date |
Country |
78680 |
Jul 1962 |
FRX |
579504 |
Aug 1931 |
DEX |
361315 |
Nov 1931 |
GBX |
391683 |
May 1933 |
GBX |
396973 |
Aug 1933 |
GBX |
Continuation in Parts (6)
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Number |
Date |
Country |
Parent |
196953 |
Feb 1994 |
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Parent |
75329 |
Jun 1993 |
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Parent |
908366 |
Jul 1992 |
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Parent |
969060 |
Oct 1992 |
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Parent |
896388 |
Jun 1992 |
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Parent |
739670 |
Aug 1991 |
|