Objective: to evaluate the effects of bone graft combined porcelain fused to Co-Cr metal crowns splinttreatment for conserving liven abutment.
目的：评价牙周植骨术联合夹板式钴铬合金烤瓷联冠保留末端松动牙的临床疗效。
2
Results: 1 pain indexes: Compare the change of the three groups' pain indexes of prior and post treatment, we fund splinttreatment group 0.05.
结果：1疼痛指数：三组患者治疗前后疼痛指数的改变量，牙合垫治疗组0.05。
3
ObjectiveIn order to quantify the treatment of fractures with splint, we develop discal index drawing force transducer for measuring and controlling the sanction of fixation retainer of the splint.