Rosenblum R E
Orthodontic Department, Eastman Dental Center, Rochester, NY, USA.
Angle Orthod. 1995;65(1):49-62. doi: 10.1043/0003-3219(1995)065<0049:CIMMRO>2.0.CO;2.
This study was undertaken to evaluate whether the majority of Class II skeletal patterns are mandibular retrusive or maxillary protrusive and also to compare four maxillary sagittal cephalometric indicators and four mandibular sagittal cephalometric indicators in a skeletal Class II sample. The Fishman SMA method was used to stratify the subjects into 11 maturity levels. Computerized cephalometric programs selected the subjects and compared the different indicators for each subject. The results indicate a wide diversity in the evaluation of maxillary protrusion and mandibular retrusion in these subjects. The Downs facial angle indicated that only 27.0% of the sample had mandibular retrusion. The angle NA-FH indicates that 56.3% of the sample had maxillary protrusion. These findings are in marked contrast to those evaluated by some of the other indicators. Preliminary data from this study was presented at a combined meeting of the Orthodontic Society of the Cote D'Azur and the North Atlantic Component of the E.H. Angle Society of Orthodontists, Nice, France, October 1990 and at the annual meeting of the North Atlantic Component of the E.H. Angle Society of Orthodontists, Philadelphia, April 1991.
本研究旨在评估II类骨骼型的大多数是下颌后缩还是上颌前突，并比较II类骨骼样本中的四个上颌矢状向头影测量指标和四个下颌矢状向头影测量指标。采用菲什曼SMA方法将受试者分为11个成熟度水平。计算机化头影测量程序选取受试者并比较每个受试者的不同指标。结果表明，这些受试者在上颌前突和下颌后缩的评估上存在很大差异。唐斯面角显示，样本中只有27.0%有下颌后缩。NA-FH角显示，56.3%的样本有上颌前突。这些结果与其他一些指标评估的结果形成了显著对比。本研究的初步数据于1990年10月在法国尼斯举行的蔚蓝海岸正畸学会和E.H.安格尔正畸学会北大西洋分会联合会议上以及1991年4月在费城举行的E.H.安格尔正畸学会北大西洋分会年会上发表。
