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-  2015 

利用WALA嵴分析安氏Ⅱ类1分类患者牙弓与基骨形态 Dental and Basal Arch Forms Analysis in Angle ClassⅡ Division 1 Malocclusions Based on WALA Ridge

Keywords: 安氏Ⅱ类1分类,基骨形态,牙弓形态,WALA嵴

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Abstract:

目的:利用WALA嵴分析及比较安氏Ⅱ类1分类患者牙弓形态与基骨形态,以期指导临床诊断和治疗。方法:随机选取48例安氏Ⅰ类患者为对照组,39例安氏Ⅱ类1分类患者为实验组。标定石膏模型下颌各牙FA点(临床冠中心点)、WALA点,分析二者对应的牙弓与基骨形态。结果:所有研究对象FA曲线与WALA曲线显著正相关。实验组与对照组牙弓及基骨各段宽度无显著差异(P>0.05),实验组牙弓前段长度明显大于对照组(P<0.05),牙弓中段、全牙弓长度及基骨长度与对照组无明显差异(P>0.05)。结论:研究对象下颌FA曲线与WALA曲线显著正相关,提示WALA嵴可作为可靠的基骨标志;安氏Ⅱ类1分类错牙合畸形患者牙弓及基骨各段宽度较安氏Ⅰ类组无明显减小,提示不应轻易扩展下牙弓

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