矢状Ⅱ类不同垂直骨面型成人舌骨位置的测量分析

Hyoid position in Class Ⅱ adult patients with various vertical facial patterns

目的研究矢状Ⅱ类不同垂直骨面型成人舌骨位置的特点及差异。方法选取成人矢状Ⅱ类不同垂直骨面型者135例的头颅侧位定位片,男性60例,女性75例。对每张头颅侧位定位片进行舌骨位置的测量并分别比较不同性别、不同垂直骨面型者舌骨位置的差异及舌骨位置与下颌平面角的相关关系。结果舌骨水平向测量指标AH-CVP和AH-C3在各垂直骨面型组均为男性大于女性,舌骨垂直向各测量指标在各垂直骨面型组几乎均为男性大于女性。AH-Or与下颌平面角正相关。结论矢状Ⅱ类不同垂直骨面型者舌骨位置存在某些差异,主要表现为男性舌骨位置较女性偏向前下方。舌骨位置与下颌平面角的大小存在一定相关关系。

Objective To investigate the characteristics and different hyoid position in Class Ⅱ adult patients with various vertical facial patterns. Methods Cephalograms of 135 Class Ⅱ adult patients with various vertical facial patterns were collected. Sixty cases were males and 75 cases were females. Hyoid positions were measured and analyzed. The Correlation between hyoid position and mandibular plane angle were investigated. Results The measurements of AH - CVP and AH- C3 in males were larger than that in females in all vertical facial pattern groups. Almost in all vertical facial pattern groups, the measurements of vertical position of hyoid in males were significantly larger than that in females. AH - Or was positively related to the mandibular plane angle. Conclusion There were differences in hyoid position among various vertical facial pattern groups. The hyoids in males were positioned more anterior - inferiorly than that in females. There were some correlations between the hyoid position and the mandibular plane angle.