| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a core for mounting a bracket for orthodontics, capable of being easily and quickly manufactured at a low cost. SOLUTION: In this core made of a rubber or resin elastic molding material, shaped by covering a peripheral surface of a tooth form model 2 provided with an orthodontic bracket 2 on the peripheral surface, and composed of a primary core 6a forming the inner surface side and a secondary core 6b superposed on the primary core 6a and forming the outer peripheral surface side, the primary core 6a and the secondary core 6b are integrally fixed by fusing or adhering at a multi-layered cross sectional part. The materials fusing to each other are used as the molding materials of the primary core 6a and the secondary core 6b, and the secondary core 6b is coated and formed before the molding material of the primary core 6a is solidified, whereby the primary core 6a and the secondary core 6b are fused to each other.</p> |
