MOUTH GUARD AND METHOD OF MANUFACTURING DRY GEL FOR MOUTH GUARD

摘要

PPROBLEM TO BE SOLVED: To inexpensively provide a mouth guard having proper hardness, and superior in moldability and a wearing feeling. PSOLUTION: A 30 % solution is formed by dissolving polyvinyl alcohol powder having a polymerization degree of 1,700 and a saponification degree of 80 or more in a solvent including at least water and including DMSO when necessary by heating, and then, the solution is gelled by cooling. The solvent is removed and dried, and cut when necessary after heat treatment, and is dissolved by reheating together with a predetermined quantity of water so that the moisture content becomes 60 to 80 %, particularly, 70 %, and next, is re-gelled by cooling in a mouth guard-shaped mold. PCOPYRIGHT: (C)2005,JPO&NCIPI