| 摘要 |
PURPOSE:To enhance hue, fittiness, strength, operability and impact resistance of the title jacket crown, by building up a hard resin layer on a matrix composed of a resin sheet. CONSTITUTION:A hard resin layer 5 is built up on the matrix 3 composed of a resin sheet mounted on a support tooth 2 through an adhesive 4. Said hard resin layer 5 consists of a thin opaque resin layer 5a, the dentine resin layer 5b built up thereon and the enamel resin layer 5c further built up on said resin layer 5b in order from the support tooth 2. This jacket crown 1 has a double structure wherein an outer hard part and an inner part rich in elasticity are bonded. |
