种植型弹性牵张器的研制与初步牵张实验研究  

Design of an elastic implant-distraction apparatus

作　　者：戴杰[1] 何黎升[1] 赵晋龙[1] 商洪涛[1] 

机构地区：[1]西安第四军医大学口腔医院颌面外科,710032

出　　处：《实用口腔医学杂志》2006年第3期383-386,共4页Journal of Practical Stomatology

摘　　要：目的:设计研制新型种植型弹性牵张器。方法:采用纯钛制作中空的两段式种植型牵张器,将镍钛记忆合金弹簧置入其内,利用镍钛记忆合金的形状记忆功能所产生的回复弹力,实现自动连续牵张。在犬头颅标本的下颌骨制备3cm长,6mm高骨传送盘,植入种植型弹性牵张器,行牵张实验。结果:各加工部件符合设计要求。骨传送盘被成功牵开,稳定性可靠,牵张器无破损,可达到预期牵张效果。结论:种植型弹性牵张器机械强度高,操作简单,可实现全埋置自动连续牵张成骨,符合牵张器的发展趋势。Objective： To design a new elastic implant-distraction apparatus. Methods： The implant-distraction apparatus consists of tow units, a TiNi shape memory alloy spring and an implant, made of pure titanium TA2. Spring was put into the hollow implant. After horizontal osteotomy, the implant-distraction device was placed into the partial edentulous area of mandible of 6 dogs to distract the alveolar bone. Results： The apparatus was manufactured. It could implement continual autodistraction and kept stable in the in vivo experiment. 10 weeks after application of the apparatus the transport bone segment was vertically augmented by 4.7 mm on average. Conclusion ： The implant-distraction device is functional in distraction osteogenesis.

关 键 词：牵张成骨 牙种植体 镍钛记忆合金 连续牵张 

分 类 号：R782[医药卫生—口腔医学]