| 摘要 |
<p>PURPOSE:To enhance the mechanical strength and impact resistance of a denture base, by bonding a resin to the base bottom surface of an artificial acrylic resin tooth using an adhesive and pressing a sulfone resin by compression or injection molding to bond the artificial acrylic resin tooth to the polysulfone denture base. CONSTITUTION:An artificial acrylic resin tooth 1 is implanted in a paraffin wax mold so that the line connecting a cut end part 2 and a tooth neck part 3 forms an angle of 45 deg. with respect to the paraffin wax mold and gypsum is embedded according to the operation of a denturist to form a gypsum model. Next, paraffin wax is removed and, after a polymerizable resin is momentarily applied to the base bottom surface of the artificial acrylic resin tooth embedded in an upper flask, a polycarbonate pellet is placed and the gypsum model is dried at 130 deg.C. A polysulfone plate is placed on the gypsum model of a lower flask and, after heated by an infrared heater until the surface thereof becomes 350 deg.C, the upper and lower flasks are matched with each other to perform compression molding. Or, the gypsum model is mounted on an injection molding machine to perform injection molding.</p> |
