US3874081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental pin and dispenser
Assignee: Individual
•
Filing: 1972-05-18
•
Granted: 1975-04-01
•
Expires: 1992-05-18
Abstract
Abstract A dental pin for use in the reinforcement of restorations used in the reconstruction of mutilated teeth and a reinforcing rod and mandrel to be used in conjunction with the dental pin. A dental dispenser for handling such pins.
Inventors
- 👤 Mark E Franklin
- 👤 James R Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:24
CPC Classifications
A; A61; A61C; A61C5/00; A61C5/30; A61C5/35
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
182 words
An end cutting dental pin which combines cutting and structural elements for use in the reconstruction of a mutilated tooth, the dental pin being adapted sequentially to cut the tooth material of the remaining portion of a mutilated tooth and thereafter to become permanently embedded in and retained as a structural element of the reconstructed tooth, the pin being further adapted for insertion into the remaining portion of a mutilated tooth by the use of a pin mandrel, and comprising a cylindrical structural element which integrally includes: a. a plurality of passagewqys through the cylindrical structural element for the retention of restorative material; b. cutting blades disposed at one end of the cylindrical element, the cutting blades being adapted for cutting a hole in tooth material in the shape and size sufficient to allow the penetration of the pin into the mutilated tooth; and c. engagement means upon the cylindrical element to allow the temporary engagement of the element with a pin mandrel during the cutting of a hole by the blades and the penetration of the pin into the tooth material.
Claim 2
Dependent Claim
182 words
An end cutting dental pin which combines cutting and structural elements for use in the reconstruction of a mutilated tooth, the dental pin being adapted sequentially to cut the tooth material of the remaining portion of a mutilated tooth and thereafter to become permanently embedded in and retained as a structural element of the reconstructed tooth, the pin being further adapted for insertion into the remaining portion of a mutilated tooth by the use of a pin mandrel, and comprising a cylindrical structural element which integrally includes: a. a plurality of passagewqys through the cylindrical structural element for the retention of restorative material; b. cutting blades disposed at one end of the cylindrical element, the cutting blades being adapted for cutting a hole in tooth material in the shape and size sufficient to allow the penetration of the pin into the mutilated tooth; and c. engagement means upon the cylindrical element to allow the temporary engagement of the element with a pin mandrel during the cutting of a hole by the blades and the penetration of the pin into the tooth material.
Claim 3
Dependent Claim
157 words
A dental pin combining cutting and structural elements adapted to be embedded in the structure of a mutilated tooth which is reconstructed, the dental pin being adapted for insertion in the mutilated tooth by the use of a pin mandrel and comprising: a. a straight tube-like cylindrical structural element adapted for reception into a mutilated tooth and retention in a reconstructed tooth, the cylindrical element including a slot in the upper portion thereof, the slot being adapted for engagement of the pin mandrel when the pin is inserted in the mandrel, the cylindrical element further including internal threads in the upper portion of the cylindrical element, said threads being adapted to receive a threaded reinforcing rod; and b. cutting blades adapted for cutting tooth material, the blades being included in the cylindrical element and being disposed at the end of the cylindrical element which is driven into the mutilated tooth by the use of a pin mandrel.
Claim 4
Dependent Claim
157 words
A dental pin combining cutting and structural elements adapted to be embedded in the structure of a mutilated tooth which is reconstructed, the dental pin being adapted for insertion in the mutilated tooth by the use of a pin mandrel and comprising: a. a straight tube-like cylindrical structural element adapted for reception into a mutilated tooth and retention in a reconstructed tooth, the cylindrical element including a slot in the upper portion thereof, the slot being adapted for engagement of the pin mandrel when the pin is inserted in the mandrel, the cylindrical element further including internal threads in the upper portion of the cylindrical element, said threads being adapted to receive a threaded reinforcing rod; and b. cutting blades adapted for cutting tooth material, the blades being included in the cylindrical element and being disposed at the end of the cylindrical element which is driven into the mutilated tooth by the use of a pin mandrel.
Claim 5
Dependent Claim
126 words
A dental pin combining cutting and structural elements adapted to be embedded in the structure of a mutilated tooth which is reconstructed, the dental pin being adapted for insertion in the mutilated tooth by the use of a pin mandrel and comprising: a. a tube-like cylindrical structural element adapted for reception into a mutilated tooth and retention in a reconstructed tooth, the tube-like cylindrical structural element further including a bellied portion consisting of a round ball-like protuberance at approximately the midpoint along the length thereof; and b. cutting blades adapted for cutting tooth material, the blades being included in the cylindrical element and being disposed at the end of the cylindrical element which is driven into the mutilated tooth by the use of a pin mandrel.
Claim 6
Dependent Claim
126 words
A dental pin combining cutting and structural elements adapted to be embedded in the structure of a mutilated tooth which is reconstructed, the dental pin being adapted for insertion in the mutilated tooth by the use of a pin mandrel and comprising: a. a tube-like cylindrical structural element adapted for reception into a mutilated tooth and retention in a reconstructed tooth, the tube-like cylindrical structural element further including a bellied portion consisting of a round ball-like protuberance at approximately the midpoint along the length thereof; and b. cutting blades adapted for cutting tooth material, the blades being included in the cylindrical element and being disposed at the end of the cylindrical element which is driven into the mutilated tooth by the use of a pin mandrel.
Claim 7
Dependent Claim
174 words
A dental pin combining cutting and structural elements adapted to be embedded in the structure of a mutilated tooth which is reconstructed, the dental pin being adapted for insertion in the mutilated tooth by the use of a pin mandrel and comprising: a. a tube-like cylindrical structural element adapted for reception into a mutilated tooth and retention in a reconstructed tooth, the tube-like cylindrical element including: i. a slot in the upper portion of the element which is adapted for engagement of a pin mandrel when the pin is subsequently inserted into the mandrel; ii. a flange positioned at approximately the midpoint along the length of the cylindrical element; and iii. internal threads in the upper portion of the tube-like cylindrical element, said threads therein being adapted to receive a threaded reinforcing rod; and b. cutting blades adapted for cutting tooth material, the blades being included in the cylindrical element and being disposed at the end of the cylindrical element which is driven into the mutilated tooth by the use of a pin mandrel.
Claim 8
Dependent Claim
174 words
A dental pin combining cutting and structural elements adapted to be embedded in the structure of a mutilated tooth which is reconstructed, the dental pin being adapted for insertion in the mutilated tooth by the use of a pin mandrel and comprising: a. a tube-like cylindrical structural element adapted for reception into a mutilated tooth and retention in a reconstructed tooth, the tube-like cylindrical element including: i. a slot in the upper portion of the element which is adapted for engagement of a pin mandrel when the pin is subsequently inserted into the mandrel; ii. a flange positioned at approximately the midpoint along the length of the cylindrical element; and iii. internal threads in the upper portion of the tube-like cylindrical element, said threads therein being adapted to receive a threaded reinforcing rod; and b. cutting blades adapted for cutting tooth material, the blades being included in the cylindrical element and being disposed at the end of the cylindrical element which is driven into the mutilated tooth by the use of a pin mandrel.
Claim 9
Dependent Claim
159 words
A dental pin combining cutting and structural elements, the dental pin being adapted to be embedded in the structure of a mutilated tooth which is reconstructed, the dental pin further being adapted for insertion in the mutilated tooth by the use of A pin mandrel and comprising: a. a tube-like cylindrical structural element adapted for reception into a mutilated tooth and retention in a reconstructed tooth; b. cutting blades adapted for cutting tooth material, the blades being included in the cylindrical element and being disposed at the end of the cylindrical element which is driven into the mutilated tooth by the use of a pin mandrel; c. a slot in the upper portion of the cylidrical element which slot is a apted for engagement of a pin mandrel when the dental pin is inserted into the mandrel; and d. a bellied portion consisting of a round ball-like protuberance at approximately the midpoint along the length of the cylindrical element.
Claim 10
Dependent Claim
159 words
A dental pin combining cutting and structural elements, the dental pin being adapted to be embedded in the structure of a mutilated tooth which is reconstructed, the dental pin further being adapted for insertion in the mutilated tooth by the use of A pin mandrel and comprising: a. a tube-like cylindrical structural element adapted for reception into a mutilated tooth and retention in a reconstructed tooth; b. cutting blades adapted for cutting tooth material, the blades being included in the cylindrical element and being disposed at the end of the cylindrical element which is driven into the mutilated tooth by the use of a pin mandrel; c. a slot in the upper portion of the cylidrical element which slot is a apted for engagement of a pin mandrel when the dental pin is inserted into the mandrel; and d. a bellied portion consisting of a round ball-like protuberance at approximately the midpoint along the length of the cylindrical element.
Claim 11
Dependent Claim
46 words
A dental pin according to claim 5 and further including a notch at the bottom of the slot in the upper portion of the dental pin, said notch being adapted for engagement of the pin mandrel when the dental pin is subsequently inserted in the mandrel.
Claim 12
Dependent Claim
29 words
A dental pin according to claim 5 and further including internal threads in the upper portion of the pin, said threads being adapted to receive a threaded reinforcing rod.
Claim 13
Dependent Claim
129 words
A dental pin combining cutting and structural elements, the dental pin being adapted to be embedded in the structure of a mutilated tooth which is reconstructed and being further adapted for insertion in the mutilated tooth by the use of a pin mandrel and comprising: a. a tube-like cylindrical structural element adapted for reception into a mutilated tooth and retention in a reconstructed tooth, the cylindrical structural element including therein, a separately formed reinforcing rod adapted to be inserted in the upper portion of the cylindrical structural element after said cylindrical structural element is inserted in the tooth; and b. cutting blades adapted for cutting tooth material, the blades being included in the cylindrical element which is driven into the mutilated tooth by the use of a pin mandrel.
Claim 14
Dependent Claim
129 words
A dental pin combining cutting and structural elements, the dental pin being adapted to be embedded in the structure of a mutilated tooth which is reconstructed and being further adapted for insertion in the mutilated tooth by the use of a pin mandrel and comprising: a. a tube-like cylindrical structural element adapted for reception into a mutilated tooth and retention in a reconstructed tooth, the cylindrical structural element including therein, a separately formed reinforcing rod adapted to be inserted in the upper portion of the cylindrical structural element after said cylindrical structural element is inserted in the tooth; and b. cutting blades adapted for cutting tooth material, the blades being included in the cylindrical element which is driven into the mutilated tooth by the use of a pin mandrel.
Claim 15
Dependent Claim
24 words
A dental pin according to claim 8 in which the reinforcing rod extends beyond the end of the upper portion of the cylindrical element.
Claim 16
Dependent Claim
26 words
A dental pin according to claim 9 wherein the portion of the reinforcing rod which extends beyond the upper portion of the cylindrical element is L-shaped.
Claim 17
Dependent Claim
26 words
A dental pin according to claim 9 wherein the portion of the reinforcing rod which extends beyond the upper portion of the cylindrical element is T-shaped.
Claim 18
Dependent Claim
26 words
A dental pin according to claim 9 wherein the portion of the reinforcing rod which extends beyond the upper portion of the cylindrical element is eyeletshaped.
Claim 19
Dependent Claim
170 words
A dental pin combining cutting and structural elements, the dental pin being adapted to be embedded in the structure of a mutilated tooth which is reconstructed and being further adapted for insertion in the mutilated tooth by the use of a pin mandrel, and comprising: a. a tube-like cylindrical structural element having internal threads in the upper portion thereof and being adapted for reception into a mutilated tooth and retention in a reconstructed tooth, b. cutting blades adapted for cutting tooth material comprising a multiplicity of vertically disposed cutting edges, the blades being included in the lower portion of the cylindrical element which is driven into the mutilated tooth by the use of a pin mandrel; and c. a separately formed externally threaded reinforcing rod having threads corresponding to the internal threads of the upper portion of the cylindrical element which is received into the tooth, the reinforcing rod being adapted to be engaged into the cylindrical element after the cylindrical element is first inserted and secured in the tooth.
Claim 20
Dependent Claim
170 words
A dental pin combining cutting and structural elements, the dental pin being adapted to be embedded in the structure of a mutilated tooth which is reconstructed and being further adapted for insertion in the mutilated tooth by the use of a pin mandrel, and comprising: a. a tube-like cylindrical structural element having internal threads in the upper portion thereof and being adapted for reception into a mutilated tooth and retention in a reconstructed tooth, b. cutting blades adapted for cutting tooth material comprising a multiplicity of vertically disposed cutting edges, the blades being included in the lower portion of the cylindrical element which is driven into the mutilated tooth by the use of a pin mandrel; and c. a separately formed externally threaded reinforcing rod having threads corresponding to the internal threads of the upper portion of the cylindrical element which is received into the tooth, the reinforcing rod being adapted to be engaged into the cylindrical element after the cylindrical element is first inserted and secured in the tooth.
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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) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |