Studies on the development of new transplantation and replantation of teeth, and its clinical trials.

新型牙移植、再植技术的发展及临床试验研究。

基本信息

批准号：
06557109
负责人：
TAKAHASHI Yuzo
金额：
$ 7.36万
依托单位：
Tokyo Medical and Dental University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research (B)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

项目摘要

The clinical studies on the replantation of avulsed permanent teeth were undertaken, to know the successful conditions on the long-term prognosis. From the results of above studies, theprocedures of strage, length of strage period and procedures of fixation were important to prevent the injury of periodontal ligament and root resorption.After taking the experiences of the replantation of avulsed permanent teeth, we have performed the clinical trials of the transplantation of permanent teeth.On the surgical procedure, low speed drilling system using trphine and stamp bar and irrigation system of cold saline to prevent the over heating of the socket bone, and light rigid fixation system to prevent the replacement resorption of root were developed.Clinical cases of the transplantation of permanent teeth are classified into 6 patterns according to the experiences from our fourty-seven cases performed for 2 years, 1.relantation of traumatic tooth, 2.surgical extrusion (intra-alveolar transplantation), 3.intentional replantation, 4.immediate transplantation into extraction socket, 5.immediate transplantation in edentulous alveolar ridge, 6.immediate transplantation into area of extirpation of cyst.On the prognosis for two years, three transpanted teeth were lost because these three teeth used as donors were suffered from peridontitis marginalis.The qualitative changes of alveolar bone surrounding transplanted teeth were sequentially evaluated by the degital subtraction method. The alveolar ridge of bone had been absorbed until about 40 days after transplantation. Then, new bone formation on edge of albeolar bone were observed.

进行了关于侵蚀剂牙齿的补充的临床研究，以了解长期预后的成功条件。从以上研究的结果来看，裂纹的过程，条纹期间的长度和固定程序对于防止牙周韧带和根部吸收的伤害很重要。在占据脱离恒牙的补体经验后，我们已经进行了静脉内的临界牙齿的临床，使用液位系统的临床系统进行了刺激，并进行了刺激性的系统，并进行了刺激性钻孔。插座骨的加热和轻质的刚性固定系统，以防止其替换根部吸收。提取插座，5。牙本质肺泡脊中的进化移植，6。将移植到囊肿的灭绝区域中。在预后两年内，丢失了三个牙齿，因为用供体的三个牙齿用作植物炎的牙齿炎的牙齿症状受到侵蚀。骨骼的肺泡脊一直被吸收到移植后约40天。然后，观察到了藻类骨边缘的新骨形成。