Patent CA1069239A successfully refreshed from Google Patents.
CA1069239A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Polymeric and/or monomeric dental composition comprising submicron inorganic filler
Assignee: Perdent GmbH
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Filing: 1975-01-22
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Granted: 1980-01-01
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Expires: 1995-01-22
Abstract
Abstract A B S T R A C T This invention relates to a dental material comprising a polymeris-able monomer and/or a polymer suitable for dental purposes and a microfine inorganic filler which is present in a proportion of from 10 to 90% by weight of the material and has a particle size in the range from 10 to 400 m µ. Themechanical properties and polishing qualities of the dental material of this invention are better than materials not having the microfine inorganic filler described in this invention.
Inventors
- 👤 Roland Schaefer
- 👤 Albert Gross
- 👤 Peter Wollwage
- 👤 Rudolf J. Michl
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-10-23 22:59
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/08; A61C13/09; A61C5/00; A61C5/20; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/887; C; C08; C08K; C08K3/00; C08K3/34; C08K3/36
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
61 words
A dental material comprising a polymerisable monomer and/or a polymer suitable for dental purposes, selected from polyurethanes, monomeric and polymeric acrylates and methacrylates, and mixtures thereof, and a silanised microfine inorganic filler which is present in a proporation of from 20 to 80% by weight of the material and has a particle size in the range from 10 to 400 mµ.
Claim 2
Dependent Claim
61 words
A dental material comprising a polymerisable monomer and/or a polymer suitable for dental purposes, selected from polyurethanes, monomeric and polymeric acrylates and methacrylates, and mixtures thereof, and a silanised microfine inorganic filler which is present in a proporation of from 20 to 80% by weight of the material and has a particle size in the range from 10 to 400 mµ.
Claim 3
Dependent Claim
29 words
A material according to claim 1 in which at least 50% of the microfine inorganic filler particles have a particle size in the range from 10 to 40 mµ.
Claim 4
Dependent Claim
28 words
A material according to claim 1 in which the proportion of the microfine inorganic filler is in the range from 40 to 75% by weight of the material.
Claim 5
Dependent Claim
22 words
A material according to claim 1 in which the microfine inorganic filler comprises silicon dioxide, aluminiumoxide, a glass or a mixture thereof.
Claim 6
Dependent Claim
27 words
A material according to claim 4 in which the microfine inorganic filler comprises borosilicate glass, lithium aluminium glass or a glass containing barium oxide or lanthanum oxide.
Claim 7
Dependent Claim
33 words
A material according to claim 4 in which microfine glass in a proportion of up to 25% by weight of the total filler content is present in addition to microfine silicon dioxide filler.
Claim 8
Dependent Claim
22 words
A material according to claim 1 in which the microfine inorganic filler has a specific surface area of less than 200 m2/g.
Claim 9
Dependent Claim
15 words
A material according to claim 7 in which the microfine filler is silanised with trimethoxy-(3-methacryloyloxypropyl)-silane.
Claim 10
Dependent Claim
23 words
A material according to Claim 1 which comprises a methacrylate ester of a mono- or polyhydroxy organic compound as a polymerisable monomeric binder.
Claim 11
Dependent Claim
22 words
A material according to Claim 9 in which the said ester is bis- [4-(2-hydroxy-3-methacryloyloxypropoxy)-pheny] -dimethyl methane (Bis-GMA) or 2,2-bis [4-(2-hydroxyethoxy)-phenyl] propane dimethacrylate.
Claim 12
Dependent Claim
24 words
A material according to Claim 1 which comprises a reaction product of a hydroxy alkyl methacrylate and an iso-cyanate as a polymerisable monomeric binder.
Claim 13
Dependent Claim
23 words
A material according to Claim 1 which includes a pigment and/or an opacifier having a particle size of not more than 400 m,µ.
Claim 14
Dependent Claim
11 words
Artificial teeth manufactured from a dental material according to Claim 1.
Claim 15
Dependent Claim
14 words
Replacements for parts of teeth manufactured from a dental material according to Claim 1.
Claim 16
Dependent Claim
20 words
Artificial teeth and replacements of parts of teeth having outer layers manufactured from a dental material according to Claim 1.
References Cited (Backward Citations)
No citation records indexed.
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