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Title: Method for filling tooth cavities employing a polymerizable urethane cement composition

Abstract: A cement composition which comprises a filler, a binder to be used in admixture with the filler, and a curing agent for polymerizing the binder, which is characterized by that the binder comprises, based on the total weight of the binder, 20-100% by weight of (A) a free-radical polymerizable monomer of the following formula: ##STR1## wherein R is a hydrogen atom or a methyl group and X is an organic residue having 1-48 carbon atoms, and 0-80% by weight of (B) a mono-, di- or tri-functional free-radical polymerizable monomer which is copolymerizable with the above monomer (A) is disclosed. By using the above binder, the filler is firmly bonded with each other and gives a cured product having high compressive strength and abrasion resistance. The cement composition is especially useful as dental restorative materials.


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Other info:


Inventors: Nagase, Yoshinori (Kurashiki, JP)
Shibatani, Kyoichiro (Kurashiki, JP)
Yamauchi, Junichi (Kurashiki, JP)
Omura, Ikuo (Kurashiki, JP)

Application Number: 06/372207
Filing Date: 1982-04-26
Publication_date: 1983-06-07
Assignee: KURARAY CO (JP)

Primary Class(es): 433/228.100 523/116, 260/998.110, 526/320
Other Classes: A61K6/09; C04B26/04; C08F20/36; A61K6/02; C04B26/00; C08F20/00; A61K6/02; C08K3/36; C07C125/07; C08K5/54
US Patent Ref:
3931678January, 1976O'Sullivan et al.204/159.13Dental filling method and composition formed thereby
4243578January, 1981O'Sullivan et al.260/998.11Dental filling composition
4248958February, 1981Faust525/127Photopolymerizable mixture containing polyurethanes
4250248February, 1981Faust525/127Photopolymerizable mixture containing unsaturated polyurethane

Other Refs: GB1401805GB1435241
March, 1972
January, 1974

Primary Examiner: Bleutge, John C.
Assistant Examiner: Lilling, Herbert J.
Attorney: Oblon, Fisher, Spivak, McClelland & Maier
Parent Case Data:

This is a division, of application Ser. No. 256,154, filed Apr. 21, 1981, and