摘要
目的 :研究西安地区安氏Ⅰ类错牙合成人的颅颌面结构特征。方法 :通过普查选取西安地区汉族大学生1 0 1人为研究对象 ,男 5 3人 ,女 4 8人 ,年龄 1 8～ 2 3岁。选用传统 1 2种硬软组织测量分析法及新增的Alabama分析法、第四军医大学优选项目测量分析法 ,对颅颌面部有关角度、线距及线距比进行测量 ,并将各项测量数据与该地区正常牙合成人测量数据进行比较。结果 :安氏Ⅰ类错牙合成人下颌相对于上颌位置靠后 ,下颌斜度大 ,颏部后缩 ,呈Ⅱ类趋势 ;上中切牙突距、下中切牙倾斜度、牙合平面、腭平面、下颌平面倾斜度、下颌角及鼻唇角均较大 ;下颌长度、下颌长度与上颌长度比值、上下颌突度、面凸角、Z角及上下唇凸距均较小 ;其生长型垂直向大于水平向 ,并向后下 ;男性上颌长度及上面高与全面高比大 ,下面高与全面高比小 ,女性上下中切牙角小。结论 :安氏Ⅰ类错牙合成人呈现颌面部在矢状方向上发育欠佳 ,以下颌更为显著 ;下颌在垂直方向上发育异常 ,并呈现向后向下趋势 ,从而使软硬组织发生趋向Ⅱ类变化的特征。其中男性表现为上面部比例偏大、下面部偏小 ,而女性表现为前面部比例适宜 。
Aim:To study the craniofacial structure of young adults with Angle's classⅠmalocclusion in Xi'an area.Methods:A total of 101 subjects were selected from population of Han Nationality in Xi'an.Twelve traditional cephalometric analysis methods were used in this study. Alabama analyses and the Fourth Military Medical University optimum seeking method were also used. Every measurement was compared with that of the adults with normal occlusion in Xi'an.Results:Compared with the normal occlusion in Xi'an,there was a classⅡ malocclusion tendency with backward mandible position, larger mandible cirsoidity and more concave chin in Angle's classⅠmalocclusion. The items which were larger than those of the normal occlusion were the convexity of the upper central incisors,the inclination of the lower central incisors, occlusion plane, palate plane, and mandible plane as well as the lower jaw angle and the nasolabial angle;the items which were smaller than those of the normal occlusion were the length of the mandible,the ratio of the mandible to the maxilla,the convexity of the maxilla and mandible, the facial convex angle, Z angle and lip protrusion. Its growth style was backward and downward with bigger vertical development and smaller saggital development.For males, the maxilla length and the ratio of the upper facial height to the total front facial height were larger, whereas the ratio of the lower facial height to the total front facial height was smaller. Conclusion: It is shown that the adults in Xi'an have Angle's class Ⅱ tendency with ill developed jaws on vertical and saggital directions.
出处
《郑州大学学报（医学版）》
CAS
北大核心
2004年第3期484-487,共4页
Journal of Zhengzhou University(Medical Sciences)
关键词
安氏类错hè
成人
颅颌面结构
Angle's classⅠmalocclusion
adult
craniofacial structure
