The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 24, 2001
Filed:
Jan. 21, 2000
Applicant:
Inventors:
Assignee:
GC Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61C 5/02 ;
U.S. Cl.
CPC ...
A61C 5/02 ;
Abstract
A root canal filling material is disclosed, including (A) from 1 to 50% by weight of guttapercha and/or trans-polyisoprene, (B) from 0.1 to 10%, by weight of polybutene having a number average molecular weight of from 600 to 4,000, (C) from 0.1 to 10% by weight of ester gum, (D) from 0.1 to 20%, by weight of paraffin wax, and (E) from 10 to 95% by weight of one or two or more inorganic fillers selected from zinc oxide, barium sulfate and calcium hydroxide. The root canal filling material of the invention has high adhesion to root canal walls and a sufficient working time and can be used in a method of filling a root canal upon heat softening during the root canal treatment.