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US5228907A
Expired / Lapsed
US
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Polymerizable dental material
Assignee: Kulzer GmbH
•
Filing: 1991-11-07
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Granted: 1993-07-20
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Expires: 2011-11-07
Abstract
Abstract Radiopaque, abrasion-resistant tooth fillings and inlays that can be polished to a high gloss can be made from a dental material that, in addition to monomeric dimethacrylates, contains a filler mixture of 80 to 90 weight % barium aluminum silicate glass, having a mean particle size of 0.5 to 1.5 μm, and 10 to 20 % weight silicon dioxide, having a mean particle size of 0.04 to 0.06 μm. The dental material is also suitable for anchoring dental prostheses.
Inventors
- 👤 Regina Eppinger
- 👤 Bernhard Eppinger
- 👤 Detlef Heindl
- 👤 Peter J. Kohler
- 👤 Joachim Fritze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:40
CPC Classifications
A; A61; A61K; A61K6/00; A61K6/70; A61K6/71; A61K6/77; A61K6/15; A61K6/17
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
109 words
A polymerizable dental material, comprising: (a) 10 to 60 weight % of a monomeric dimethacrylate component comprising at least one of bis-(4-(2-hydroxy-3-methacryloyloxypropoxy)phenyl)dimethylmethane, triethylene glycol dimethacrylate and diurethane dimethacrylate made from 2,2,4-trimethylhexamethylene diisocyanate and 2-hydroxyethyl methacrylate, (b) 37 to 87 weight % of an inorganic filler mixture comprising 80 to 90 weight % barium aluminum silicate glass having a mean particle size of about 0.7 μm and 10 to 20 weight % of microfine silicon dioxide having a mean particle size of 0.04 to 0.06 μm, (c) 0.02 to 2 weight % of a α-diketone, (d) 0.1 to 1 weight % amine and (e) 0.02 to 0.1 weight % benzildimethylacetal.
Claim 2
Dependent Claim
109 words
A polymerizable dental material, comprising: (a) 10 to 60 weight % of a monomeric dimethacrylate component comprising at least one of bis-(4-(2-hydroxy-3-methacryloyloxypropoxy)phenyl)dimethylmethane, triethylene glycol dimethacrylate and diurethane dimethacrylate made from 2,2,4-trimethylhexamethylene diisocyanate and 2-hydroxyethyl methacrylate, (b) 37 to 87 weight % of an inorganic filler mixture comprising 80 to 90 weight % barium aluminum silicate glass having a mean particle size of about 0.7 μm and 10 to 20 weight % of microfine silicon dioxide having a mean particle size of 0.04 to 0.06 μm, (c) 0.02 to 2 weight % of a α-diketone, (d) 0.1 to 1 weight % amine and (e) 0.02 to 0.1 weight % benzildimethylacetal.
Claim 3
Dependent Claim
13 words
The dental material of claim 1, wherein the inorganic filler mixture is silanized.
Claim 4
Dependent Claim
15 words
The dental material of claim 2, wherein the inorganic filler mixture is silanized with 3-methacryloyloxypropyltrimethoxysilane.
Claim 5
Dependent Claim
11 words
The dental material of claim 1, wherein the α-diketone, comprises camphorquinone.
Claim 6
Dependent Claim
27 words
The dental material of claim 1, wherein the α-diketone comprises a mixture of 0.01 to 1 weight % camphorquinone and 0.01 to 1 weight % of 9,10-phenanthrenequinone.
Claim 7
Dependent Claim
38 words
The dental material of claim 5, wherein (c) and (d) comprise a photoinitiator system comprising 0.02 to 0.05 weight % camphor quinone, 0.02 to 0.05 weight % 9,10-phenanthrenequinone, and 0.3 to 0.5 weight % dimethylaminobenzoic acid butoxyethyl ester.
Claim 8
Dependent Claim
18 words
The dental material of claim 6, which further comprises 0.2 to 0.5 weight % of an organic peroxide.
Claim 9
Dependent Claim
21 words
The dental material of claim 7, wherein the organic peroxide is selected from the group consisting of diacetylperoxide, dibenzoylperoxide and di-tert.-butylperoxide.
Claim 10
Dependent Claim
22 words
The dental material of claim 1, wherein the amine is selected from the group consisting of N,N-bis-(2-hydroxyethyl)-p-toluidine and esters of 4-dimethylaminobenzoic acid.
Claim 11
Dependent Claim
38 words
The dental material of claim 1, wherein the monomeric dimethacrylate component comprises bis-(4-(2-hydroxy-3-methacryloyloxypropoxy)phenyl)dimethylmethane and triethylene glycol dimethacrylate; the α-diketone comprises camphorquinone; the barium aluminum silicate glass is silanized with 3-methacryloyloxypropyltrimethoxysilane; and the silicon dioxide is silanized with 3-methacryloyloxypropyltrimethoxysilane.
Claim 12
Dependent Claim
14 words
The dental material of claim 10, wherein the amine is 4-dimethylaminobenzoic acid butoxyethyl ester.
Claim 13
Dependent Claim
11 words
The dental material of claim 10, wherein the amine is N,N-bis-(2-hydroxyethyl)-p-toludine.
Claim 14
Dependent Claim
12 words
The dental material of claim 12, wherein the α-diketone further comprises 9,10-phenanthrenequinone.
Claim 15
Dependent Claim
31 words
The dental material of claim 3, which further comprises 0.02 to 0.1 weight % of a benzoyl compound, and wherein the α-diketone comprises camphorquinone or a mixture of camphorquinone and 9,10-phenanthrenequinone.
Claim 16
Dependent Claim
17 words
The dental material of claim 14, further comprising 0.2 to 0.5 weight % of an organic peroxide.
Claim 17
Dependent Claim
125 words
The dental material of claim 15, in the form of a first paste and a second paste, wherein the first paste comprises bis-(4-(2-hydroxy-3-methacrylolyloxypropoxy) phenyl) dimethylmethane and triethylene glycol dimethacrylate, barium aluminum silicate glass with a mean particle size of 0.7 μm and silicon dioxide with a mean particle size of 0.04 to 0.06 μm, camphorquinone and 9,10-phenanthrenequinone, dimethylaminobenzoic acid butoxyethyl ester further comprises benzildimethylacetal, and wherein the second paste comprises triethylene glycol dimethacrylate and diurethane dimethacrylate made from 1 mol 2,2,4-trimethylhexamethylene diisocyanate and 2 mol 2-hydroxyethyl methacrylate, barium aluminum silicate glass with a mean particle size of 0.7 μm and silicon dioxide with a mean particle size of 0.04 to 0.06 μm and further comprises dibenzoylperoxide in an amount of 0.2 to 0.5 weight %.
Claim 18
Dependent Claim
80 words
The dental material of claim 1, consisting essentially of (a) 14 weight % of bis-GMA and 7 weight % of triethylene glycol dimethacrylate; (b) 69.7 weight % of barium aluminum silicate glass silanized with 3-methacryloyloxypropyltrimethoxysilane, and 8 weight % of silicon dioxide silanized with 3-methacryloyloxypropyltrimethoxysilane, said silicon dioxide having a mean particle size of 0.04 to 0.06 μm; (c) 0.4 weight % of camphorquinone; (d) 0.06 weight % of benzildimethylacetal; and (e) 0.3 weight % of 4-dimethylaminobenzoic acid butoxyethyl ester.
Claim 19
Dependent Claim
14 words
The dental material of claim 1, wherein the amine is 4-dimethylaminobenzoic acid butoxyethyl ester.
Claim 20
Dependent Claim
15 words
The dental material of claim 18, wherein the inorganic filler mixture is silanized with 3-methacryloyloxypropyltrimethoxysilane.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1996-07-19 | 1997-01-18 | 1997-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-19 | 2001-01-18 | 2001-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-19 | 2005-01-18 | 2005-07-20 | $7700.00 | Window Closed / Lapsed |