不同错牙合类型同名牙牙冠大小比较分析  

Comparison of crown sizes among different malocclusion groups

作　　者：庄金良[1] 丁洁[1] 李勋[1] 徐山山[1] 陈远萍[1] 

机构地区：[1]吉林大学口腔医院正畸科,长春130041

出　　处：《中国实用口腔科杂志》2015年第2期108-111,共4页Chinese Journal of Practical Stomatology

基　　金：吉林省卫生厅资助项目(2012Z121)

摘　　要：目的比较不同错牙合类型同名牙牙冠大小,为建立未萌恒牙宽度预测方程提供指导依据。方法选取2012—2013年就诊于吉林大学口腔医院正畸科就诊的12-18岁男、女患者初诊记存模型各150副,按照安氏错牙合分类法将其分为Ⅰ、Ⅱ、Ⅲ组。测量各组模型同名牙牙冠的近远中宽度,比较分析其大小及其性别差异。结果各组内大多数研究样本左右两侧同名牙的牙冠宽度差异无统计学意义（P〉0.05）,而不同性别同名牙的牙冠宽度差异存在统计学意义（P〈0.05）。结论应分别建立不同性别的未萌恒牙宽度预测方程,并取两侧同名牙牙冠宽度的平均值,以提高预测方程的准确性。ObjectiveTo provide instructing guidance for establishing the prediction equation of tooth size of unerupted permanent canine and premolars.MethodsThree hundred pretreatment dental casts of patients in treatment at the Orthodontic Department of Jilin University were selected,aged from 12 to 18 and the subjects included 150 female and150 male patients. The casts were divided into three groups：GroupⅠ,GroupⅡ and Group Ⅲ.The widths of the crowns were measured and compared to figure out the differences in size and sex.ResultsThe differences of crown widths in each group were not significant while the crown widths were significantly different in sex.ConclusionPrediction equations of tooth size of unerupted permanent teeth should be constructed respectively for male and female.

关 键 词：错牙合畸形 牙冠大小 性别差异 

分 类 号：R78[医药卫生—口腔医学]