缩短牙种植术与分根术联合修复周期的可行性研究
The feasibility study on shorten treatment cycle of dental implantation and split-root technique joint repair

摘要： 模拟临床咬合,对种植术与分根术联合修复后的牙体进行功能性早期负载,得到下颌骨各阶段的最大变形量,从而研究缩短种植术与分根术联合修复周期的可行性。采用反求的方法得到实验模型,在没有形成骨结合的情况下对术后牙体施加动态载荷,通过有限元计算得出在整个咬合周期内下颌骨的变形分布规律。最大变形量出现在受力角度达到最大处,且小于产生纤维性结合的最小阀值150 μm,可以用早期负重代替传统延期负重作为治疗种植术与分根术联合治疗方法,并且可以缩短治疗周期。
Abstract: In order to study the feasibility of shorten the treatment cycle of dental implantation and split-root technique joint repair. Simulating clinical chew and applying immediate load on the tooth of dental implantation and split-root technique joint repaired to get the information of mandibulars maximum deformation in different stages. Firstly getting the experimental model by the method of reverse engineering, and then applying dynamic loads on the postoperative tooth before the implant osseointegrates into the bone, lastly calculating deformation distribution in the whole period of chew cycle by finite element analysis. The maximum deformation occurs at the point of maximum stress angle, and less than 150 μm which produces junctura fibrosa. So we get the conclusion that immediate loading can be used instead of traditional extension loading to shorten the treatment cycle