拔牙后不同类型骨缺损行位点保存术骨量恢复的CBCT比较研究  

Alveolar bone changes of different types of bone defects after teeth extraction on cone bean computed tomography

作　　者：Ye Myat Thu 李晓 蒋延波 Aung Than Oo 唐礼[1] Ye Myat Thu;Xiao Li;Yanbo Jiang;Aung Than Oo;Li Tang(Department of Implantology,College&Hospital of Stomatolo gy Affiliated to Guangxi Medical University,Nanning 530021,China)

机构地区：[1]广西医科大学附属口腔医院种植科,南宁530021

出　　处：《广西医科大学学报》2020年第1期53-60,共8页Journal of Guangxi Medical University

基　　金：supported by the National Natural Science Foundation of China (No. 81460108)。

摘　　要：目的:探讨拔牙位点保存术在恢复骨缺损中的作用以及对不同类型骨缺损可能存在的骨增量差异。方法:选取广西医科大学附属口腔医院种植科就诊的患者80例,分为实验组和对照组,每组40例。实验组在行拔牙术的同时行拔牙位点保存术,对照组拔牙术后不填充骨替代材料;两组再根据拔牙窝牙槽骨缺损的类型分为4个亚组:拔牙窝为一壁骨缺损(A组)、二壁骨缺损(B组)、三壁骨缺损(C组)、四壁骨缺损(D组)。实验组无膜拔牙后采用脱矿的牛骨混合10%骨胶原(Bio-Oss Collagen?)保存牙槽骨,所有研究对象拔牙术前行锥形束计算机断层扫描(CBCT),6个月后随访。结果:实验组平均骨高度较术前增加,牙槽骨平均宽度较估计原始骨轮廓恢复72.79%~88.08%,对照组牙槽骨平均宽度较估计原始骨轮廓恢复57.20%~84.91%。结论:拔牙位点保存术对牙槽骨的恢复具有明显效果,可以有效减少拔牙后牙槽骨骨吸收。Objective:To explore the effect of socket preservation for different types of bone defects after tooth extraction,and the recovery of alveolar bone volume.Methods:A total of80 teeth were divided into 2 groups(n=40 per group):test group(socket preservation after tooth extraction)and control group(extraction alone).Each group was subdivided into 4 groups:1-wall,2-wall,3-wall and 4-wall bone defect groups(group A,B,C and D).All patients in the test group underwent to preserve alveolar bone with bovine-derived xenograft,10%collagen matrix(Bio-Oss Collagen?)after tooth extraction without membrane and followed up after 6 months.All measurements were done on cone-bean computed tomography(CBCT).Results:Mean bone heights increased in the test group.Mean alveolar bone width restored 72.79%-88.08%in the test group meanwhile 57.20%-84.91%in the control group when compared with estimated original bone contour.Conclusion:Socket preservation technique is very useful and can prevent the bone loss from tooth extraction and even augment the alveolar bone dimension in patients with intrabony defect.

关 键 词：位点保存 骨内缺损 牙槽骨改建 CBCT测量 

分 类 号：R782[医药卫生—口腔医学]