曲断片（牙合）平面对下颌第三磨牙间隙测量的影响  

Comparison among occlusal planes for lower third molar space measurement on panoramic radiograph

作　　者：李若萱[1] 吕亚林[1] 王晓庚[1] 项天庆[1] 王新华[1] 

机构地区：[1]首都医科大学附属北京安贞医院口腔医疗中心,100029

出　　处：《中华口腔正畸学杂志》2011年第1期36-38,共3页Chinese Journal of Orthodontics

摘　　要：目的 在曲断片上分析（牙合）平面作为参考平面对测量下颌第三磨牙间隙的影响.方法 选择65例错（牙合）患者正畸前的曲断片（男28人,女37人）,年龄19.5岁～26.8岁.下第三磨牙完全萌出组44侧,阻生组69侧.用配对t检验分析（牙合）平面定点误差对下颌第三磨牙间隙测量的影响.用随机区组分析比较各（牙合）平面测量第三磨牙间隙的差异.结果 （牙合）平面的定点误差较小（P≥0.05）;下第三磨牙萌出组和阻生组以不同（牙合）平面测量第三磨牙间隙都有显著差异（P＜0.05）.结论 尽管（牙合）平面的定点误差小,但不同（牙合）平面对下颌第三磨牙间隙测量值有明显影响.Objective The purpose of this study was to investigate the influence of occlusal plane （OP） on the lower third molar space measurement on panoramic radiographs. Methods Subjects in the study consisted of 65 adult （28 males, 37 females） and were divided into two groups：third molar fully erupted group and third molar impacted group. 44 erupted mandible quadrants and 69impacted mandible quadrants on panoramic radiographs were used to compare the difference OP as the reference planes on the third molar space measurement on panoramic radiographs by block designs.Results Significant difference was noted among different occlusal planes （p〈0. 05） on the third molar space measurement both in fully erupted group and in impacted group. Conclusions Lower third molar space measurement was sensitive to various inclination of OP on panoramic radiographs.

关 键 词：(牙合)平面 曲断片 第三磨牙间隙 

分 类 号：R783[医药卫生—口腔医学]