笔者于1979年就开始制作斜钉固位冠以加强的冠的固位,初步取得满意效果。半年来着手作了一组实验研究,汇报如下: (一)适应症 上下颌后牙,其牙冠缺损大,不宜作充填治疗者;或因干髓术及根管治疗后用以恢复牙体的咬(牙合)功能并欲预防牙纵折的发生者。 (牙合)面磨耗引起牙质过敏,其他疗法效果 I began in 1979 to make oblique nail retention crown to strengthen the retention of the crown, initially achieved satisfactory results. Six months started to make a group of experimental studies, reported as follows: (A) indications Upper and lower jaw teeth, the crown defects, should not be used for filling treatment; or due to dry pulp and root canal treatment to restore the teeth Bite (occlusion) function and want to prevent the occurrence of vertical occlusion of the person. (Occlusal) surface wear caused by dentin allergy, the effect of other therapies