唇腭裂患者牙槽突裂植骨区牙移入的临床观察

目的:探讨牙槽突裂植骨区牙移入的可行性及牙移入的方式,评价移入牙的牙槽骨支持率和移植骨高度变化。方法:选取唇腭裂伴牙槽突裂患者10例,行牙槽突裂自体髂骨植骨术后,分别拍摄植骨后3个月(T1)及牙移入植骨区后(T2)的根尖片,观察牙移入植骨区的情况,测量T1和T2阶段移入牙的牙槽骨支持率,采用SPSS17.0软件包对测量数据进行配对t检验,并参照Bergland四分法评价移植骨的高度变化。结果:①牙整体移入植骨区,牙槽骨支持率为(89.85±2.51)%(T1)和(90.22±2.44)%(T2),牙移入植骨区后的牙槽骨支持率与植骨后3个月的牙槽骨支持率无显著差异(P>0.05)。②移植牙槽骨的高度在牙移入前后无显著变化。结论:唇腭裂患者植骨后,可将裂隙邻近的牙移入植骨区,获得良好的牙槽骨支持。牙的移入有助于维持移植骨高度,提高植骨的成功率。

Orthodontic tooth movement into the grafted alveolar bone:a clinical study in 10 cleft lip and palate patients

PURPOSES: To explore the possibility of tooth movement into grafted alveolar bone in cleft lip and palate patients(CLP),and to evaluate the bone height of the grafted bone and alveolar bone support of the moved-in teeth.METHODS: Ten CLP patients were included in this study.Periapical radiographs were taken for the cleft-associated teeth 3 months later after bone grafting(T1) and after tooth movement into the grafted bone(T2).Alveolar bone support of the moved teeth were measured at T1 and T2 stages.Paired t test were performed for statistical analysis with SPSS17.0 software package.The height of the grafted bone were evaluated semi-quantitatively using the Bergland system.RESULTS: All the cleft-associated teeth were bodily moved into the grafted area.The average alveolar bone support for the moved teeth was(89.85±2.51)%(T1) and(90.22±2.44)%(T2),respectively.There was no significant difference between T1 and T2.No significant radiographic alteration was observed in the height of the grafted bone.CONCLUSIONS: Cleft-associated teeth could be bodily moved into the grafted bone.A successful level of alveolar bone support for the moved teeth was achieved.Moved-in teeth could reduce the resorption of grafted bone.