过去我科在粘固壳冠固定桥时,经常遇到邻接关系接触不良,或虽已恢复接触关系但位置不当而引起食物嵌塞的现象。因其桥体塑料部分已经完成,不能再加用银焊,从而给修复工作带来麻烦。鉴于上述情况,笔者设计研制成功恢复壳冠固定桥邻接关系的形成钳,经我科临床多年使用,颇感方便,效果满意。其构造如下: In the past, when sticking the crown to the fixed bridge, our department frequently encountered poor contact with the adjacencies or caused food ingestion due to improper positioning although contact was restored. Because of the plastic part of the bridge body has been completed, can not be added with silver welding, which brings trouble to the repair work. In view of the above situation, the author designed and developed the restoration of the abutment relationship of the crown-fixed bridge, which was clinically used for many years. It was quite convenient and satisfactory. Its structure is as follows: