CA1103388A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Dental restorative composite
Assignee: 3M Co
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Filing: 1977-01-13
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Granted: 1981-06-16
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Expires: 1997-01-13
Abstract
Abstract ABSTRACT A unique dental restorative material is described comprising a blend of liquid, polymerizable organic binder and a finely divided particulate filler wherein the improvement comprises the utilization of a particulate filler having a size distribution such that 70 to 95% by weight of said particles are in the range of 0.7 to 25 microns in diameter and, correspondingly, 5 to 30% by weight of said particles are in the range of 0.2 to 0.7 micron. The unique composite material provides excellent compressive strength and good translucency.
Inventors
- 👤 Jerry W. Mlinar
- 👤 Harvey L. Anderson
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-10-23 16:00
CPC Classifications
A; A61; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/887
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
69 words
A composite dental restorative material prepared by mixing and polymerizing a liquid organic polymerizable binder and a finely-divided particulate filler, wherein the improvement comprises said filler having a particle size distribution such that 70 to 95% by weight of said particles are in the range of 0.7 to 25 microns and correspondingly 5 to 30% by weight of said particles are in the range of 0.2 to 0.7 micron.
Claim 2
Dependent Claim
69 words
A composite dental restorative material prepared by mixing and polymerizing a liquid organic polymerizable binder and a finely-divided particulate filler, wherein the improvement comprises said filler having a particle size distribution such that 70 to 95% by weight of said particles are in the range of 0.7 to 25 microns and correspondingly 5 to 30% by weight of said particles are in the range of 0.2 to 0.7 micron.
Claim 3
Dependent Claim
47 words
A composite dental restorative material in accordance with claim 1, wherein 75 to 85% by weight of said particles are in the range of 0.7 to 20 microns and correspondingly 15 to 25% by weight of said particles are in the range of 0.2 to 0.7 micron.
Claim 4
Dependent Claim
16 words
A composite dental restorative material in accordance with claim 1, wherein said particles are alpha quartz.
Claim 5
Dependent Claim
25 words
A composite dental restorative material in accordance with claim 1, wherein said particulate filler comprises about 75 to 90% by weight of said restorative material.
Claim 6
Dependent Claim
22 words
A composite dental restorative material in accordance with claim 1, wherein said polymerizable binder comprises the glycidyl methacrylate derivative of Bisphenol A.
Claim 7
Dependent Claim
18 words
A composite dental restorative material in accordance with claim 1, wherein said binder further contains a reactive diluent.
References Cited (Backward Citations)
No citation records indexed.
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