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US 4,302,381 AGranted
Dental material
AssigneeKuraray Co., Ltd.
InventorsIkuo Omura, Junichi Yamauchi, Yoshinori Nagase, Kyoichiro Shibatani
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Abstract
The present invention provides a dental material comprising a polymerizable methacrylate monomer mixture and a curing agent, said polymerizable methacrylate monomer mixture containing a compound represented by the formula ##STR1## wherein R is H or methyl and n is integer of 1-4, in an amount of 5-50% by weight based on the whole polymerizable monomer mixture. Said dental material is useful as a filling material, a dental adhesive primer, and a pit and fissure sealant.
Claims11
A dental filling material, which comprises:
- (1) a polymerizable methacrylate monomer mixture consisting essentially of a compound of the formula:
- ##STR7## wherein R is hydrogen or methyl and n is an integer of 1 to 4 and at least one polymerizable methacrylate comonomer having from 5 to 40 carbon atoms, said compound being present in said monomer mixture in an amount of 5-50% by weight and said comonomer being present in said mixture in an amount of 95-50% by weight, the percentages being based upon the total weight of polymerizable methacrylate monomers in the monomer mixture;
- (2) a curing agent and (3) a powdered filler.
A dental filling material, which comprises:
- (1) a monomer mixture of (a) 1, 2-bis-(3-methacryloxy-2-hydroxypropoxy) ethane, (b) 2, 2'-bis-[4-(3-methacryloxy-2-hydroxypropoxy) phenyl] propane, (c) neopentyl glycol dimethacrylate, and (d) triethylene glycol dimethacrylate, the amounts of components (a), (b), (c), and (d) in the total monomer mixture being 10-20% by weight, 51-60% by weight, 10-20% by weight and 10-17% by weight respectively;
- (2) a curing agent and (3) a powdered filler.
Dependencies are inferred from the claim text.