US 5,962,550 AGranted

Dental filling resin composition

AssigneeGC Corporation

InventorsShoji Akahane, Hisashi Sato, Hideki Yarimizu, Kazuo Hirota

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Abstract

A dental filling resin composition is disclosed, comprising: a reaction product between an aluminosilicate glass powder containing at least one element selected from Ca, Sr, and Ra and an organic acid containing one or more carboxyl groups in one molecule thereof, a methanol-insoluble polymer, a monomer containing at least one unsaturated double bond and having no acidic group, and a polymerization initiator, and optionally a filler. The dental filling resin composition of the invention has not only superior mechanical characteristics and esthetics but also an ability to release a fluorine ion and therefore, can be suitably used for a wide variety of clinical applications such as filling restoration of tooth, core construction, or sealing of pit and fissure.

Claims13

Dependent claims

A dental filling resin composition comprising:

(A) a reaction product between an aluminosilicate glass powder containing at least one element selected from Ca, Sr, and Ra and an organic acid containing one or more carboxyl groups in one molecule thereof,
(B) a methanol-insoluble polymer,
(C) a monomer containing at least one unsaturated double bond and having no acidic group, and
(D) a polymerization initiator,
wherein said organic acid containing one or more carboxyl groups in one molecule thereof is one or two or more members selected from L-aspartic acid, L-arginine, citric acid, glycine, glycolic acid, DL-glyceric acid, gluconic acid, glucuronic acid, glutaric acid, acetonedicarboxylic acid, tartaric acid, cyclopentanetetracarboxylic acid, diglycolic acid, diethylmalonic acid, L-cysteic acid, oxalic acid, sulfosalicylic acid, tartronic acid, tricarballylic acid, tetrahydrofurantetracarboxylic acid, meso-butane-1,2,3,4-tetracarboxylic acid, trimellitic acid, lactic acid, benzenepentacarboxylic acid, malonic acid, DL-mandelic acid, benzenehexacarboxylic acid, and malic acid and is reacted in an amount of from 0.1 to 45% by weight of said reaction product.

2 more elements

A method of making a dental filling resin composition, comprising mixing

(A) a reaction product between an aluminosilicate glass powder containing at least one element selected from Ca, Sr, and Ra and an organic acid containing one or more carboxyl groups in one molecule thereof,
(B) a methanol-insoluble polymer,
(C) a monomer containing at least one unsaturated double bond and having no acidic group, and
(D) a polymerization initiator,
wherein said organic acid containing one or more carboxyl groups in one molecule thereof is one or two or more members selected from L-aspartic acid, L-arginine, citric acid, glycine, glycolic acid, DL-glyceric acid, gluconic acid, glucuronic acid, glutaric acid, acetonedicarboxylic acid, tartaric acid, cyclopentanetetracarboxylic acid, diglycolic acid, diethylmalonic acid, L-cysteic acid, oxalic acid, sulfosalicylic acid, tartronic acid, tricarballylic acid, tetrahydrofurantetracarboxylic acid, meso-butane-1,2,3,4-tetracarboxylic acid, trimellitic acid, lactic acid, benzenepentacarboxylic acid, malonic acid, DL-mandelic acid, benzenehexacarboxylic acid, and malic acid and is reacted in an amount of from 0.1 to 45% by weight of said reaction product.

2 more elements

Dependencies are inferred from the claim text.