摘要
目的:了解犬牙周膜牵张成骨牙快速移动条件下牙周组织的反应。方法:6只犬,每犬下颌左右两侧分别设为实验侧和对照侧,对照侧用传统方法以第三前磨牙为支抗牙向远中移动第一前磨牙,实验侧用自制牙周膜牵张装置。终止实验后,取被移动牙的牙周组织,HE染色及改良Mallory三色染色法染色,光镜观察。结果:HE染色的切片可见牵张侧成纤维细胞、成骨细胞多见,血管丰富,有明显的新骨形成。改良Mallory三色染色法非常直观和清楚地显示了张力侧新骨的形成。结论:传统的正畸牙移动和牙周膜牵张成骨牙快速移动的组织学改变在张力侧没有质的差异,只有量的差别。即后者比前者的组织合成活性更高。
PURPOSE: To study histological changes under the conditions of orthodontic rapid tooth movement through distraction osteogenesis of the periodental ligament on dogs. METHODS: The experiment was carried out in 6 dogs , the left side of jaws of each one was set as test or control side ,and the orther side was control or test side. On the control side,the first premolar was moved using traditional methods while the third premolar as archor,on the test side,using self-made distraction device . The periodental tissue of tooth moved were extracted at the end of the test,some of decalcified sections were stained with hematoxylin and eosin and others with modified Mallory' s trichrome staining method,being examined by LM. RESULTS: Decalcified sections stained with hematoxylin and eosin showed the bone formed actively,and there were a large number of fibroblasts and osteoblasts as well as abundant vascularity. The modified Mallory's trichrome staining method showed the newly formed bone very clearly and distinctly. CONCLUSIONS: There was no difference in quality but in quantity on the histological reactions in tension side of the tooth moved by traditional method and by distraction osteogenesis through the peridental ligament and periodontal membrane,the latter could induce higher activity of histological synthesiza-tion than the former.
出处
《上海口腔医学》
CAS
CSCD
2004年第4期312-314,共3页
Shanghai Journal of Stomatology
关键词
牙周膜
牵张成骨
牙移动
组织学
Periodental ligament
Distraction osteogenesis
Tooth movement
Histology
