US5354785A
Expired / Lapsed
US
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Polymerizable dental materials
Assignee: Ivoclar AG
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Filing: 1992-11-02
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Granted: 1994-10-11
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Expires: 2012-11-02
Abstract
Abstract Polymerizable dental materials, suitable as underfilling material, comprising at least one polymerizable monomer or prepolymer, a setting catalyst and inorganic fillers comprise as filler, a glass powder comprising of 40-75 wt-% CaO, 5-30 wt-% B 2 O 3 and 5-35 wt-% SiO 2 .
Inventors
- 👤 Volker Rheinberger
- 👤 Ulrich Salz
- 👤 Kurt Grabher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:31
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/40; A; A61; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/887
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
89 words
A method for treating tooth cavities comprising applying underfilling material, wherein the underfilling material comprises: (a) a polymerizable dental material comprising a monofunctional (meth)acrylate, or a polyfunctional (meth)acrylate, or mixtures thereof; (b) a curing catalyst; and (c) an inorganic filler material comprising a glass powder comprising: 40-75 wt-% CaO, 5-30 wt-% B 2 O 3 , 5-35 wt-% SiO 2 , whereby the underfilling material provides a controlled release of calcium oxide or hydroxide for an alkalizing effect on the pulpa protecting the pulpa against acids and bacterial attacks.
Claim 2
Independent Claim
89 words
A method for treating tooth cavities comprising applying underfilling material, wherein the underfilling material comprises: (a) a polymerizable dental material comprising a monofunctional (meth)acrylate, or a polyfunctional (meth)acrylate, or mixtures thereof; (b) a curing catalyst; and (c) an inorganic filler material comprising a glass powder comprising: 40-75 wt-% CaO, 5-30 wt-% B 2 O 3 , 5-35 wt-% SiO 2 , whereby the underfilling material provides a controlled release of calcium oxide or hydroxide for an alkalizing effect on the pulpa protecting the pulpa against acids and bacterial attacks.
Claim 3
Dependent Claim
30 words
A method according to claim 1, wherein the inorganic filler materials are glass powders comprising: 45-60 wt-%, CaO, 16-28 wt-%, B 2 O 3 , 10-30 wt-%, SiO 2 .
Claim 4
Dependent Claim
24 words
A method according to claim 2, wherein the inorganic filler materials essentially consists of CaO, B 2 O 3 , and SiO 2 .
Claim 5
Dependent Claim
15 words
A method according to claim 1, wherein the inorganic filler materials comprises other inorganic fillers.
Claim 6
Dependent Claim
31 words
A method according to claim 4, wherein the inorganic filler materials comprises other inorganic fillers selected from the group comprising ytterbium fluoride, barium sulphate, silica, and X-ray-opaque or non-X-ray-opaque dental glasses.
Claim 7
Dependent Claim
12 words
A method according to claim 5, wherein the catalyst is light curable.
Claim 8
Dependent Claim
19 words
A method according to claim 6, wherein the catalyst are photocatalyst and comprises camphorquinone, in combination with an amine.
Claim 9
Dependent Claim
26 words
A method according to claim 1, wherein said at least one photopolymerizable monofunctional or polyfunctional (meth)acrylate is present in a quantity of 10 to 50 wt-%.
Claim 10
Dependent Claim
82 words
Dental underfilling material for treating tooth cavities comprising: (a) a polymerizable dental material comprising a polymerizable monofunctional (meth)acrylate, or polyfunctional (meth)acrylate, or mixtures thereof, (b) a curing catalyst, and (c) an inorganic filler materials comprising a glass powder comprising: 4- 75wt-% CaO, 5-30 wt-% B 2 O 3 , 5-35 wt-% SiO 2 , whereby the underfilling material provides a controlled release of calcium oxide or hydroxide for an alkalizing effect on the pulpa protecting the pulpa against acids and bacterial attacks.
Claim 11
Dependent Claim
82 words
Dental underfilling material for treating tooth cavities comprising: (a) a polymerizable dental material comprising a polymerizable monofunctional (meth)acrylate, or polyfunctional (meth)acrylate, or mixtures thereof, (b) a curing catalyst, and (c) an inorganic filler materials comprising a glass powder comprising: 4- 75wt-% CaO, 5-30 wt-% B 2 O 3 , 5-35 wt-% SiO 2 , whereby the underfilling material provides a controlled release of calcium oxide or hydroxide for an alkalizing effect on the pulpa protecting the pulpa against acids and bacterial attacks.
Claim 12
Dependent Claim
32 words
Dental underfilling materials according to claim 9, wherein the inorganic filler materials are a glass powder comprising: 45-60 wt-% CaO, 15-28 wt-% B 2 O 3 , 10-30 wt-% SiO 2 .
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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) | 1997-10-10 | 1998-04-11 | 1998-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-10 | 2002-04-11 | 2002-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-10 | 2006-04-11 | 2006-10-11 | $7700.00 | Window Closed / Lapsed |