钛镍记忆合金牵张器牵张增高牙槽嵴的动态研究  

Healing process after alveolar ridge distraction with TiNi-SMA distractor

作　　者：谢旻[1] 胡敏[2] 胡东升 李其平[1] 肖红喜[2] 

机构地区：[1]解放军总医院第309临床部口腔科,北京100091 [2]解放军总医院口腔科,北京100853 [3]总后第一门诊部口腔科,北京100842

出　　处：《军医进修学院学报》2006年第2期121-123,共3页Academic Journal of Pla Postgraduate Medical School

基　　金：国家自然科学基金资助项目(30171017);北京市自然科学基金资助项目(7042058)

摘　　要：目的:通过对犬牵张手术后的下颌牙槽嵴高度、骨密度和组织学变化进行动态研究,了解应用钛镍记忆合金牵张器牵张成骨增高牙槽嵴的变化规律。方法:牵张增高牙槽嵴的15只犬于术前、术后1周、5周、3个月、6个月分别测量术区及对照侧相应位置颌骨高度,拍X线片,取牵张区及对照侧相同区域骨块进行双能X线骨密度测量并进行组织学研究。结果:牙槽嵴增高高度在牵张术后1、3、6个月分别减少5%、8%、11%。牵张术后3个月,牵张区骨密度低于对照侧;6个月,与对照侧的差异无显著性。结论:使用TiN i-SMA牵张器增高牙槽嵴成骨迅速,再吸收程度较低,成骨形态满意。牵张成的新骨有足够的强度,可以满足种植等后期修复的要求。Objective：To observe the osseous healing process after alveolar ridge distraction with TiNi-SMA distractor and to evaluate the new bone＇s quality. Methods： 15 canines were divided into three groups, and being killed accordingly 1,3 and 6 months after distraction. The mandibles were examined clinically, radiologically, and histologically. Results： 1,3 and 6 months after distraction, the height of the augmented alveolar ridge decreased 5%, 8% and 11% accordingly. Bone mineral density was lower than the blank control three months after distraction. But the index increased and showed no significant difference six months after distraction. Conclusion：The healing process after alveolar ridge distraction with TiNi-SMA distractor performs well and the new bone is strong enough for secondary implant placement.

关 键 词：下颌骨 牙槽增强术 镍 

分 类 号：R782.14[医药卫生—口腔医学]