钛镍记忆合金牵张器结合ADM增高犬牙槽嵴的动态观察  

The Dynamic Study of Alveolar Height after Alveolar Ridge Augmentation with TiNi-SMA Distractor and ADM

作　　者：肖红喜[1] 胡敏[1] 温伟生[1] 张立海[1] 牛宇[1] 

机构地区：[1]解放军总医院口腔科,北京100853

出　　处：《口腔颌面外科杂志》2008年第3期169-172,共4页Journal of Oral and Maxillofacial Surgery

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

摘　　要：目的:观察牵张后犬下颌牙槽嵴高度的动态变化,探讨钛镍记忆合金牵张器结合脱细胞真皮基质(acellular dermal matrix,ADM)增高牙槽嵴后对牙槽嵴增高高度的影响。方法:健康成年雄性杂种犬12只牙槽嵴萎缩模型建成后,一侧行牵张手术,放入ADM及两个直径1.0mm、复形温度为33℃的"S"形牵张器;另一侧为对照侧,仅放入同样牵张器行牵张术,不放入ADM。术后1周、1个月、3个月拍摄X线片并分别测量下颌两侧牙槽嵴高度。结果:术后即刻实验侧和对照侧牙槽嵴增高高度无显著统计学差异。术后1、3个月对照侧牙槽嵴增高高度均高于实验侧。结论:ADM作为屏障膜,减缓牵张速度,延长牵张时间,在镍钛记忆合金牵张成骨过程中,是一种理想的引导骨组织再生(GBR)引导膜。Objective： To observe the dynamic changes of alveolar height after alveolar ridge augmentation with TiNi-SMA distractor and ADM. Methods： 12 adult healthy male dogs were selected. After the animal model of alveolar atrophy were set up, on one side of mandible, two ＂S＂ shape distractors were placed. The diameter of ＂S＂shape distractor was 1 mm, and the rebound temperature was 33 ℃. The ADM were placed on the distraction gap and were fixed by the feet of distractors. The other side were only placed with distractors as control. 1 week, 1month and 3 months after distraction, The alveolar height of both sides were measured. Results： Right after the distraction ,alveolar height between experimental and control sides showed no difference. But the height in experimental sides became lower than controls 1 month and 3 months later. Conclusion： ADM may decrease the distraction rate, and balance the distraction resisting motive force. It is an ideal material for GBR on alveolar ridge agumentation together with TiNi-SMA distraction.

关 键 词：牵张成骨 牙槽嵴增高术 脱细胞真皮基质 

分 类 号：R782.13[医药卫生—口腔医学]