安氏Ⅱ类错牙合畸形头影测量水平向指标的对比研究

摘要

Objective To study the reliability of seven horizontal cephalometric indexes in evaluating horizontal jaw status of AngleⅡmalocclusion.Methods Lateral cephalograms of 100 AngleⅡadult malocclusion patients (50 male and 50 fe-male) , who were treated in the Orthodontic Department of School of Stomatology at Dalian Medical University, were ana-lyzed.Correlation analysis was performed for SNA,SNB, ANB angle,APDI,AB plane Angle,facial angle,and angle of con-vexity.Results There was either positive or negative correlation between SNA, SNB, ANB angle, APD, AB plane Angle, facial angle, and angle of convexity.Conclusion Utilizing critical parameters, such as SNA,SNB, ANB Angle, APDI, AB plane Angle,facial angle,and angle of convexity to evaluate the horizontal jaw status of Angle Ⅱ malocclusion could im-prove the accuracy of diagnosis.%目的：研究7种水平向头影测量指标对安氏Ⅱ类错牙合畸形颌骨水平向关系的可靠性。方法选择100例安氏Ⅱ类错牙合患者（男50例，女50例）的X线头颅定位侧位片进行投影测量分析，对SNA角、SNB角、ANB角、APDI、上下齿槽座角、面角、颌凸角7项测量项目进行相关性分析。结果 SNA角、SNB角、ANB角、APDI、上下齿槽座角、面角、颌凸角测量项目之间均存在正相关或负相关关系。结论综合运用SNA、SNB、ANB角、APDI、上下齿槽座角、面角、颌凸角等指标评价安氏Ⅱ类错牙合颌骨水平向位置，可提高诊断的准确性。