US5165893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for filling and sealing root canals of teeth
Assignee: Individual
•
Filing: 1992-04-15
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Granted: 1992-11-24
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Expires: 2012-04-15
Abstract
Abstract A device for filling and sealing root canals of teeth is disclosed. The device comprises an adaptable liner having a coating of a root canal sealer or bonding material on its external surface which seals the root canal when the liner is expanded or inflated.
Inventors
- 👤 Ronald A. Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:29
CPC Classifications
A; A61; A61C; A61C5/00; A61C5/50
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
89 words
A device for filling and sealing a root canal of a tooth comprising a. a liner of nonrigid, flexible, expandable material which will conform to the contours of a root canal wall upon insertion and which will form a continuous surface with said wall and having a coating of a sealer or bonding material on its external surface which will adhere to the dentin of the root canal system; b. means for inserting said liner into the root canal; and c. means to expand or to inflate said liner.
Claim 2
Independent Claim
89 words
A device for filling and sealing a root canal of a tooth comprising a. a liner of nonrigid, flexible, expandable material which will conform to the contours of a root canal wall upon insertion and which will form a continuous surface with said wall and having a coating of a sealer or bonding material on its external surface which will adhere to the dentin of the root canal system; b. means for inserting said liner into the root canal; and c. means to expand or to inflate said liner.
Claim 3
Dependent Claim
14 words
A device according to claim 1 wherein the liner is a biologically compatible plastic.
Claim 4
Dependent Claim
13 words
A device according to claim 1 wherein the liner is a polyurethane material.
Claim 5
Dependent Claim
13 words
A device according to claim 1 wherein the liner is a polyethylene material.
Claim 6
Dependent Claim
11 words
A device according to claim 1 wherein the liner is PTFE.
Claim 7
Dependent Claim
13 words
A device according to claim 1 wherein the liner is a silicone elastomer.
Claim 8
Dependent Claim
16 words
A device according to claim 1 wherein the liner is foamable polymer encased in silicone elastomer.
Claim 9
Dependent Claim
15 words
A device according to claim 1 wherein the liner is foamable polymer encased in PTFE.
Claim 10
Dependent Claim
18 words
A device according to claim 1 wherein the liner is visible light curing composite encased in silicone elastomer.
Claim 11
Dependent Claim
12 words
A device according to claim 1 wherein the liner is metallic foil.
Claim 12
Dependent Claim
21 words
A device according to claim 1 wherein an interstitial liner is a foamable polymer infused with supplemental sealer or bonding material.
Claim 13
Dependent Claim
21 words
A device according to claim 1 wherein an interstitial liner is a plastic fabrication infused with supplemental sealer or bonding material.
Claim 14
Dependent Claim
21 words
A device according to claim 1 wherein an interstitial liner is a metallic fabrication infused with supplemental sealer or bonding material.
Claim 15
Dependent Claim
46 words
A device according to claim 1 wherein the means to expand or to inflate said liner according to claim 1 comprise a member selected from the group consisting of gutta percha, zinc oxide, aluminum oxide, silica gels, silicates, magnesium carbonates, light curable polymers and dental amalgam.
Claim 16
Dependent Claim
18 words
A device according to claim 1 wherein said liner is inserted into the root canal by a substrate.
Claim 17
Dependent Claim
12 words
A device according to claim 15 wherein the substrate is a plugger.
Claim 18
Dependent Claim
12 words
A device according to claim 15 wherein the substrate is a carrier.
Claim 19
Dependent Claim
12 words
A device according to claim 15 wherein the substrate is a spreader.
Claim 20
Dependent Claim
12 words
A device according to claim 15 wherein the substrate is fiber optic.
Claim 21
Dependent Claim
22 words
A device according to claim 1 wherein the means to expand or to inflate said liner according to claim 1 comprises air.
Claim 22
Dependent Claim
16 words
A device according to claim 1 wherein the liner is formed from a sheet of PTFE.
Claim 23
Dependent Claim
205 words
A method of filling and sealing a root canal of a tooth comprising, in combination, the steps of: a. inserting into a root canal, which has been appropriately prepared for endodontic treatment, a device (as described in claim 1 comprising a) a liner of non-rigid, flexible, expandable material which will conform to the contour of a root canal wall upon insertion and which will form a continuous surface with said wall having a coating of a sealer or bonding material on its external surface which will adhere to the dentin of the root canal system; b) means for inserting said liner into the root canal; and c) means to expand or to inflate said liner; b. cementing said device to the apical seat of the root canal; c. expanding or inflating the liner element of said device by creating and maintaining constant positive pressure within said liner to enable the external wall surface of said liner to meet and conform to the contours of the root canal wall and form an intimate and continuous interface; and d. simultaneously applying by said means of expansion or inflation sealer or bonding material which coats the external surface of said liner to the dentin of a root canal.
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) | 1995-11-24 | 1996-05-25 | 1996-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-24 | 2000-05-25 | 2000-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-11-24 | 2004-05-25 | 2004-11-24 | $7700.00 | Window Closed / Lapsed |