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近年来,教科书所介绍的锤造3/4冠,都是先将其分为内、外两层锤好,再把两层焊接。其操作复杂,费时费工,较难掌握。我们自1986年起采用一次锤造成形,用于临床作固定桥和半固定桥的固位体15例,随访观察4年零3个月,临床效果满意。现将其操作步骤简介于后。 石膏代型的制作与其它锤造冠相同。 锤造: 制取金属冠舌面阴模:将金属代型切缘向下呈45°角,倾斜插入型圈熔金内,舌面埋至舌隆突以上,唇
In recent years, textbooks introduced hammer made 3/4 crown, are first divided into inner and outer hammer hammer, and then two welding. The operation is complicated, time-consuming and laborious, more difficult to grasp. Since 1986, we used a hammer to make shape, for the clinical fixation of fixed bridge and semi-fixed bridge in 15 cases, followed up for 4 years and 3 months, the clinical results were satisfactory. Now the operating steps outlined below. Gypsum generation and the hammer made the same crown. Hammer made: Preparation of metal crown Tongue negative mold: the metal-type cut edge down 45 ° angle, inclined insert ring melting gold tongue buried above the tongue process above the lips