Lawrence T N, Ellis E, McNamara J A
J Oral Maxillofac Surg. 1985 Jan;43(1):24-34. doi: 10.1016/s0278-2391(85)80009-4.
In an effort to identify the skeletal and dental relationships of Class II malocclusion, lateral cephalograms of 253 adult orthognathic surgery patients (76 male, 177 female) who had a Class II molar and cuspid relationship were traced. One hundred and four of the subjects had had presurgical orthodontic treatment and 148 had not. The most common combination of variables found in this study population was a retrusive maxilla, protrusive maxillary incisors, protrusive mandibular incisors, a retrusive mandible, and a long lower facial height.
为了确定安氏II类错牙合的骨骼和牙齿关系，对253例接受正颌外科手术的成年患者（76例男性，177例女性）的头颅侧位片进行了描记，这些患者均存在安氏II类磨牙及尖牙关系。其中104例患者术前接受过正畸治疗，148例未接受过正畸治疗。本研究人群中最常见的变量组合为上颌后缩、上颌切牙前突、下颌切牙前突、下颌后缩以及面下1/3高度增加。
