US5015180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental article containing light-curable paste
Assignee: 3M Co
•
Filing: 1989-03-01
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Granted: 1991-05-14
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Expires: 2009-03-01
Abstract
Abstract A dental tape is disclosed comprising a light-curable, non-toxic paste layered between two cover sheets, at least one of which releasably adheres to the paste, and a dental article is disclosed comprising an orthodontic bracket having a base and a light-curable, non-toxic paste sandwiched between the base and a releasably adhering substrate.
Inventors
- 👤 Ronald M. Randklev
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:52
CPC Classifications
A; A61; A61C; A61C5/00; A61C5/20; A61C7/00; A61C7/12; A61C7/14; A61C7/16; A61C2202/00; A61C2202/01
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
23 words
A dental tape comprising a light-curable, non-toxic paste layered between two cover sheets, at least one of which releasably adheres to the paste.
Claim 2
Dependent Claim
23 words
A dental tape comprising a light-curable, non-toxic paste layered between two cover sheets, at least one of which releasably adheres to the paste.
Claim 3
Dependent Claim
18 words
The tape of claim 1 wherein at least one of the cover sheets is a hand-soft, transparent film.
Claim 4
Dependent Claim
12 words
The tape of claim 2 wherein the transparent film comprises polyvinylidene chloride.
Claim 5
Dependent Claim
28 words
The tape of claim 1 wherein the releasably adhering cover sheet is a hand-hard film that is opaque to light having a wavelength capable of curing the paste.
Claim 6
Dependent Claim
18 words
The tape of claim 4 wherein the opaque film adheres to the paste through a low-adhesion backsize coating.
Claim 7
Dependent Claim
23 words
The tape of claim 1 wherein at least one of the cover sheets releasably adheres to the paste through a low-adhesion backsize coating.
Claim 8
Dependent Claim
18 words
The tape of claim 1 wherein the paste comprises a filler and a photoinitiator dispersed in a resin.
Claim 9
Dependent Claim
10 words
The tape of claim 7 wherein the resin comprises Bis-GMA.
Claim 10
Dependent Claim
10 words
The tape of claim 7 wherein the photoinitiator comprises camphorquinone.
Claim 11
Dependent Claim
16 words
The tape of claim 7 wherein the filler has a Mohs hardness less than about 4.
Claim 12
Dependent Claim
16 words
The tape of claim 7 wherein the filler has a Mohs hardness less than about 3.
Claim 13
Dependent Claim
23 words
The tape of claim 7 wherein the filler comprises nonvitreous microparticles having amorphous silica microregions uniformly interspersed with crystalline, ceramic metal oxide microregions.
Claim 14
Dependent Claim
14 words
The tape of claim 12 wherein the crystalline, ceramic metal oxide microregions are radiopaque.
Claim 15
Dependent Claim
13 words
The tape of claim 7 wherein the paste is visually translucent after curing.
Claim 16
Dependent Claim
24 words
The tape of claim 7 wherein the paste further comprises fibers that have an index of refraction the same as the resin after curing.
Claim 17
Dependent Claim
13 words
The tape of claim 7 wherein the paste further comprises a fiber scrim.
Claim 18
Dependent Claim
16 words
The tape of claim 1 wherein the paste has a thickness between 0.245 and 1.225 mm
Claim 19
Dependent Claim
17 words
The tape of claim 1 wherein the paste has a thickness between about 0.25 and 0.5 mm.
Claim 20
Dependent Claim
12 words
The tape of claim 1 wherein the paste is radiopaque after curing.
Claim 21
Dependent Claim
13 words
The tape of claim 1 wherein the paste is visually translucent after curing.
Claim 22
Dependent Claim
24 words
A dental article comprising an orthodontic bracket having a base and a light-curable, non-toxic paste sandwiched between the base and a releasably adhering substrate.
Claim 23
Dependent Claim
24 words
A dental article comprising an orthodontic bracket having a base and a light-curable, non-toxic paste sandwiched between the base and a releasably adhering substrate.
Claim 24
Dependent Claim
18 words
The article of claim 21 wherein the substrate releasably adheres to the paste though a low-adhesion backsize coating.
Claim 25
Dependent Claim
18 words
The article of claim 21 wherein the paste comprises a filler and a photoinitiator dispersed in a resin.
Claim 26
Dependent Claim
10 words
The article of claim 23 wherein the resin comprises Bis-GMA.
Claim 27
Dependent Claim
10 words
The article of claim 23 wherein the photoinitiator comprises camphorquinone.
Claim 28
Dependent Claim
16 words
The article of claim 23 wherein the filler has a Mohs hardness less than about 4.
Claim 29
Dependent Claim
16 words
The article of claim 23 wherein the filler has a Mohs hardness less than about 3.
Claim 30
Dependent Claim
23 words
The article of claim 23 wherein the filler comprises non-vitreous microparticles having amorphous silica miororegions uniformly interspersed with crystalline, ceramic metal oxide microregions.
Claim 31
Dependent Claim
13 words
The article of claim 21 wherein the substrate is a flexible cover sheet.
Claim 32
Dependent Claim
27 words
The article of claim 29 wherein the cover sheet comprises a polymer selected from the group consisting of a polyester, a fluorinated polymer, and an olefin polymer.
Claim 33
Dependent Claim
13 words
The article of claim 29 wherein the cover sheet comprises a polymer-coated paper.
Claim 34
Independent Claim
56 words
A method of making a dental reconstruction comprising the steps of: (a) positioning a non-toxic light-curable paste carried on a transparent film on at least part of the labial surface of a tooth, (b) shaping the film to the contour of the tooth, (c) curing the paste with a curing light, and (d) removing the film.
Claim 35
Independent Claim
56 words
A method of making a dental reconstruction comprising the steps of: (a) positioning a non-toxic light-curable paste carried on a transparent film on at least part of the labial surface of a tooth, (b) shaping the film to the contour of the tooth, (c) curing the paste with a curing light, and (d) removing the film.
Claim 36
Independent Claim
85 words
A method for making a dental reconstruction comprising the steps of: (a) removing part of a tooth including a side thereof to form a cavity, (b) positioning a non-toxic light-curable paste carried on a transparent film on the tooth such that the past forms a wall in place of the side of the tooth removed and the film encircles the tooth, passing between the tooth and any adjacent teeth, (c) curing the paste, and (d) filling the remainder of the cavity with a restorative material.
Claim 37
Independent Claim
85 words
A method for making a dental reconstruction comprising the steps of: (a) removing part of a tooth including a side thereof to form a cavity, (b) positioning a non-toxic light-curable paste carried on a transparent film on the tooth such that the past forms a wall in place of the side of the tooth removed and the film encircles the tooth, passing between the tooth and any adjacent teeth, (c) curing the paste, and (d) filling the remainder of the cavity with a restorative material.
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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) | 1994-05-13 | 1994-11-12 | 1995-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-13 | 1998-11-12 | 1999-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-13 | 2002-11-12 | 2003-05-14 | $7700.00 | Window Closed / Lapsed |