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目的:比较W角、ANB角和Wits值评估错患者上下颌骨矢状位置关系的可靠性。方法:选取2011年1月～2012年8月就诊于新疆医科大学第一附属医院口腔正畸科的15～25岁错畸形患者共157例,所有患者治疗前头颅侧位定位片均由同一医师严格按照要求在同一台机器上拍摄,由笔者用Adobe PhotoshopCS3图像处理软件对导入计算机的图片进行定点,测量Ⅲ类错畸形患者的W角、ANB角和Wits值,每项指标测量3次,最后取平均值,对测量结果进行变异系数分析。结果:安氏Ⅰ类错患者W角为(60.25±1.57)°,安氏Ⅱ类错患者W角为(54.21±3.65)°,安氏Ⅲ类错患者W角为(68.08±2.98)°,各组W角在性别上无显著性差异。3组错患者的W角较ANB角及Wits值相比变异系数均为最小。结论:W角、ANB角和Wits至在评价错患者颌骨矢状向位置关系时均有一定的可靠性,而W角的可靠性更好。
OBJECTIVE: To compare the reliability of the sagittal position between the maxilla and the mandible in patients with malocclusion by comparing the W angle, ANB angle and Wits value. Methods: From January 2011 to August 2012, 157 cases of misdiagnosed malformations aged 15 to 25 years who visited the Department of Orthodontics, the First Affiliated Hospital of Xinjiang Medical University were selected. All the patients were treated with the same Physicians in strict accordance with the requirements of the same machine shot by the author with Adobe PhotoshopCS3 image processing software to import computer images were sentinel point to measure the type III malocclusion patients W angle, ANB angle and Wits value, each measure 3 times , And finally take the average, the coefficient of variation of the measurement results analysis. Results The W angle was (60.25 ± 1.57) ° in patients with Class Ⅰ malocclusion, (54.21 ± 3.65) ° in patients with Class Ⅱ malocclusion, and (68.08 ± 2.98) in patients with Class Ⅲ malocclusion. ) °, the W angle in each group in gender no significant difference. Three groups of patients with wrong angle W angle ANW angle and Wits value compared to the smallest coefficient of variation. CONCLUSION: The W angle, ANB angle and Wits have certain reliability in evaluating the sagittal position of the jaw in patients with malocclusion, and the reliability of W angle is better.