【摘 要】
:
目的 探讨不同垂直骨面型骨性Ⅲ类错颌牙弓及牙槽弓宽度的特征.方法 根据下颌平面角(∠MP-FH,∠SN-MP)大小选取60例骨性Ⅲ类错颌患者,均分为高、均、低角3组,将患者锥形束CT数据导入Invivo 5.2图像处理软件,测量各组上下颌尖牙、第一前磨牙及第一磨牙处牙弓及牙槽弓宽度,并计算上下颌对应宽度差值,采用单因素方差分析3组牙弓及牙槽弓宽度、Pearson相关性分析骨性Ⅲ类错颌畸形牙弓及牙槽弓横向宽度与下颌平面角关系.结果 骨性Ⅲ类错颌上颌第一磨牙间牙弓宽度高角组大于均角组及低角组(P<0.05),
【机 构】
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贵州医科大学附属口腔医院, 贵州 贵阳 550004
论文部分内容阅读
目的 探讨不同垂直骨面型骨性Ⅲ类错颌牙弓及牙槽弓宽度的特征.方法 根据下颌平面角(∠MP-FH,∠SN-MP)大小选取60例骨性Ⅲ类错颌患者,均分为高、均、低角3组,将患者锥形束CT数据导入Invivo 5.2图像处理软件,测量各组上下颌尖牙、第一前磨牙及第一磨牙处牙弓及牙槽弓宽度,并计算上下颌对应宽度差值,采用单因素方差分析3组牙弓及牙槽弓宽度、Pearson相关性分析骨性Ⅲ类错颌畸形牙弓及牙槽弓横向宽度与下颌平面角关系.结果 骨性Ⅲ类错颌上颌第一磨牙间牙弓宽度高角组大于均角组及低角组(P<0.05),下颌第一磨牙间牙槽弓宽度低角组大于高角组及均角组(P<0.05);下颌尖牙间牙弓宽度与下颌平面角呈负相关关系,下颌尖牙牙弓宽度随下颌平面角增大而减小(P0.05).结论 骨性Ⅲ类错颌畸形牙弓、牙槽弓宽度与垂直骨面型存在一定相关性,下颌平面角越大、下颌牙弓前段宽度越窄.
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