中国汉族成人正常（牙合）牙体舌侧形态的测量研究

对中国汉族年轻成人正常（牙合）牙齿的舌侧形态进行三维测量，为研发基于中国人牙体舌侧形态的舌侧直丝弓托槽提供数据参考。方法：采用上海正雅齿科科技有限公司开发的数字化正畸设计系统软件，对普查获得的64副中国汉族正常（牙合）个体的牙齿模型进行三维扫描，并对三维数字模型舌侧面进行计算机定点及测量分析。结果：获得正常（牙合）人群牙齿舌侧的轴倾度、转矩角、冠凸距和尖牙与磨牙补偿角指标的参考值，与国内相关研究结果相近。结论：本研究的测量结果可用于研发中国人舌侧直丝弓托槽标准型。

A study on lingual teeth morphology in Chinese adults with normal occlusion

To measure the lingual surfaces of the teeth in Chinese young adults with normal occlusion, and to obtain the data for lingual straight wire （I_SW） brackets for Chinese patients. Method：With the software of Shanghai Smartee Denti-technology CompanyTM, 64 pairs of dental models with normal occlusion were scanned into digital models, then the confirmation of relevant points and the measurement of related parameters were performed. Result：The reference values of the lingual surfaces of the teeth in normal occlusion were obtained, including lingual crown angulation, lingual crown inclination, lingual crown facial preminence（CFP）, and lingual offset angles of canines and molars. Conclusion： Those data may be applied to develop a standard form of LSW brackets.