CAJ | 학술논문

目的：分析伴功能因素前牙反患者矫治前牙尖交错位、下颌后退至切牙对刃位与矫治结束后牙尖交错位3种不同位置的相关关系。方法：对18例前牙反伴下颌能后退至切对切的患者，采用固定矫治技术进行矫治。拍摄矫治之前牙尖交错位（T1）、下颌后退至切牙对刃位（T2）及矫治结束牙尖交错位（T3）X 线头颅侧位片。采用方差分析对相关 X 线头影测量项目结果3组数据间进行相互比较，进行检验分析。结果：经平均25个月的治疗，前牙的反得以矫治，磨牙关系为 I 类， SNB、ANB、MP-FH、MP-SN、U1-SN、L1-MP、Y轴角、ANS-Me 这几项测量项目的3组数据之间的 F 检验结果有统计学意义。结论：伴功能性因素前牙反经固定矫治技术治疗后，在矢状向和垂直向上下颌骨位置处于治疗前牙尖交错位与后退至切牙对刃位之间，且更接近于后退位。
목적：분석반공능인소전아반환자교치전아첨교착위、하합후퇴지절아대인위여교치결속후아첨교착위3충불동위치적상관관계。방법：대18례전아반반하합능후퇴지절대절적환자，채용고정교치기술진행교치。박섭교치지전아첨교착위（T1）、하합후퇴지절아대인위（T2）급교치결속아첨교착위（T3）X 선두로측위편。채용방차분석대상관 X 선두영측량항목결과3조수거간진행상호비교，진행검험분석。결과：경평균25개월적치료，전아적반득이교치，마아관계위 I 류， SNB、ANB、MP-FH、MP-SN、U1-SN、L1-MP、Y축각、ANS-Me 저궤항측량항목적3조수거지간적 F 검험결과유통계학의의。결론：반공능성인소전아반경고정교치기술치료후，재시상향화수직향상하합골위치처우치료전아첨교착위여후퇴지절아대인위지간，차경접근우후퇴위。
Objective:To analysis the relationship of cephalometric measurements from intercuspal position(before and after treat-ment)and retruded contact position(before treatment).Methods:18 cases with Class III malocclusion were treated using MBT straight wire appliance technique,all the incisal relationships could be edge-to-edge when the mandible was retruded,X-ray films of intercus-pal position and retruded contact position before treatment and intercuspal position after treatment were taken.The cephalometric meas-urements were statistically analysed by ANOVA.Results:After 25 months treatment the anterior crossbite were corrected in all cases. The molar relationship were class Ⅰ.The measurements of SNB,ANB,MP-FH,MP-SN,U1-SN,L1-MP,Y-axis angle and ANS-Me were significantly changed.Conclusion:After the treatment of Class III malocclusion by MBT straight wire appliance,the sagittal and vertical mandibular location can be between intercuspal position and retruded contact position of pretreatment,and it is more close to the retruded contact position.