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目的:测量中国正常年轻成人上下前牙区不同垂直水平的唇舌向牙槽骨厚度,为研究成人正畸过程中该区域牙槽骨厚度变化规律提供参照。方法:对普查获得的中国汉族正常个体进行颅面部CBCT扫描,将三维数据导入专业软件进行重建。选取根尖区(S0)、根中区(S1)两个垂直水平截取各个牙齿的测量图像,对牙槽骨唇舌向厚度测量分析。结果:获得年轻成人正常前牙区不同垂直水平的唇舌侧牙槽骨厚度的测量值。在根尖水平上,各牙位间唇侧或舌侧牙槽骨厚度差别有显著统计学差异,且唇侧牙槽骨厚度与舌侧牙槽骨厚度差别有显著统计学差异,其中舌侧上下尖牙牙槽骨最厚,唇侧上尖牙唇侧和下中切牙牙槽骨最薄。结论:建立了中国人正常人群前牙区不同高度唇舌侧牙槽骨厚度正常参考值,为研究成人正畸过程中牙槽骨厚度变化规律提供参照依据。
OBJECTIVE: To measure the thickness of the labial and lingual alveolar bone at different vertical levels in the upper and lower anterior teeth of young adults in China, and to provide a reference for the study of the changes of the alveolar bone thickness in this region during orthodontics. Methods: Craniofacial CBCT was performed on census-obtained Chinese Han normal subjects. The 3D data were imported into professional software for reconstruction. Select the root zone (S0), the root zone (S1) two vertical horizontal interception of the measured images of each tooth, the alveolar bone measured the thickness of the tongue and tongue. RESULTS: Measurements of lingual lingual alveolar bone thickness at different vertical levels in young adult normal anterior region were obtained. At apical level, there were significant differences in alveolar bone thickness between labial and lingual sides, and there was significant difference between alveolar bone thickness and lingual alveolar bone thickness Upper and lower canine alveolar bone thickest, labial labellum and lower incisors alveolar bone thinnest. CONCLUSION: The normal reference values of lingual lingual alveolar bone thickness at different heights of anterior teeth of Chinese ankle were established to provide reference for the study of alveolar bone thickness variation during orthodontics.