西安地区正常牙冠宽度及上、下颌牙量相关性研究  

Study on mesiodistal teeth size and the relationship between upper and lower teeth dimension of normal occlusion from Han Chinese in Xi'an

作　　者：李晓燕[1] 曹军[1] 

机构地区：[1]西安第四军医大学口腔医院正畸科,710032

出　　处：《实用口腔医学杂志》2008年第1期82-84,共3页Journal of Practical Stomatology

摘　　要：目的:测量西安地区汉族人正常牙冠宽度,并对上下颌牙量的相关性进行研究。方法:选取符合纳入标准的个别正常共计107例(男52例女55例),测量各个牙齿的最大近远中径宽度,然后依据测量值进行上、下颌牙量的相关性研究。结果:得出了西安地区正常各个牙牙冠宽度,其中上颌中切牙、侧切牙、尖牙、第一恒磨牙以及下颌的尖牙、前磨牙牙冠宽度男性明显大于女性,存在着显著的统计学差异。上、下颌前牙量之间及上下颌总牙量间均存在着显著的相关性(r前牙=0.754,r全牙=0.851),Bolton指数的正常值分布范围为78.32±3.01,全牙比正常值分布范围为91.10±2.27;根据这种上、下颌牙量间的相关性得出了用于计算牙量不调量的直线回归方程。结论:西安地区部分牙冠宽度男大于女,上下颌牙量间存在相关性。Objective：To study the mesiodistal teeth size and the relationship between upper and lower teeth dimension of normal occlusion from Han Chinese in Xi＇an. Methods： 52 males and 55 females with normal occlusion were selected. The mesiodistal width of each tooth was measured using a vernier gauge caliper. Statistical analysis was performed. Results： For the 107 cases with normal occlusion, the mean and standard deviation of the teeth size were calculated, There were significant differences between males and females in maxillary incisors, canines, first molar and mandibular canines, premolars. The normal range was obtained for the anterior and overall tooth size ratio （ anterior ratio ：78.32 ± 3.01 overall ratio ：91.10± 2.27 ） ; and the regression equation that was used to quantify the tooth size discrepancies was expressed according to the significant correlation between the upper and lower tooth （ r anterior = 0. 754, rtotal = 0.851 ）. Conclusion： There is a relationship between upper and lower teeth dimension. Sex difference should he considered when tooth size was used in clinic.

关 键 词：正常[牙合] 牙冠近远中径宽度 Bohon比 牙量不调 

分 类 号：R78[医药卫生—口腔医学]