Pancherz H, Zieber K, Hoyer B
Department of Orthodontics, University of Giessen, Germany.
Angle Orthod. 1997;67(2):111-20. doi: 10.1043/0003-3219(1997)067<0111:CCOCID>2.3.CO;2.
A comparison of dentoskeletal morphology in 347 Class II division 1 and 156 Class II division 2 malocclusions was performed using lateral cephalometric radiographs. Children at the ages of 8-10 years and 11-13 years were evaluated. The results of the study revealed broad variations in the variables analyzed. Skeletal Class II and Class III as well as hypo- and hyperdivergent maxillary/mandibular jaw base relationships were seen in both malocclusion samples. Noteworthy was the high frequency of cases with mandibular retrusion (Class II division 1 sample: 48% of the younger and 29% of the older subjects; Class II division 2 sample: 48% of the younger and 49% of the older subjects) and a short lower face (97%-100%). In conclusion it can be said that, except for the position of the maxillary incisors, no basic difference in dentoskeletal morphology exists between Class II division 1 and Class II division 2 malocclusions.
利用头颅侧位X线片对347例安氏II类1分类错颌畸形患者和156例安氏II类2分类错颌畸形患者的牙颌面形态进行了比较。对8 - 10岁和11 - 13岁的儿童进行了评估。研究结果显示，所分析的变量存在广泛差异。在两种错颌畸形样本中均可见骨骼II类和III类以及上颌/下颌颌骨基骨关系的低角和高角差异。值得注意的是，下颌后缩病例的发生率较高（安氏II类1分类样本：较年轻受试者中占48%，较年长受试者中占29%；安氏II类2分类样本：较年轻受试者中占48%，较年长受试者中占49%），且面下1/3短（97% - 100%）。总之，可以说，除上颌切牙位置外，安氏II类1分类错颌畸形和安氏II类2分类错颌畸形在牙颌面形态上不存在基本差异。
