论文部分内容阅读
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。
Objective To compare the size of coronal crowns of the same name with different malocclusions and to provide guidance for establishing the predictive equation of the width of non-adherent permanent teeth. Methods A total of 150 newly diagnosed male and female patients aged 12 to 18 years who were admitted to Department of Orthodontics, Stomatology Hospital of Jilin University from 2012 to 2013 were divided into Ⅰ, Ⅱ, Ⅲ group. The width and width of dental crown of the same name in each model were measured, and their differences in size and gender were compared. Results There was no significant difference in crown width between the same name teeth on the left and right sides of most of the study groups in each group (P> 0.05). However, the crown widths of the same name teeth in different groups were statistically different (P <0.05). Conclusions The width prediction equations of emasculated permanent teeth of different genders should be established respectively, and the average of the crown widths of the same name on both sides should be taken to improve the accuracy of prediction equations.