(二)诊断:根据检查所得病史情况,通过模型测量分析,参考 X 光及照像等有关资料,而进行综合诊断,定出错骀分类:(1)Angle 分类,以上颌第一磨牙为标准的分类法。第一类错(牙合)(中性错(牙合)):上下颌骨及牙弓的近远中关系正常,即在正中(牙合)时,上第一恒磨牙近中颊尖咬在下第一恒磨牙的近中颊沟上,这时出现的前牙拥挤、反(牙合),前突等(图3-24)。 (B) of the diagnosis: According to the examination of the history of the situation through the model measurement and analysis, reference X-ray and photographic and other relevant information, and make a comprehensive diagnosis, determine the wrong 骀 Classification: (1) Angle classification to the maxillary first molar as the standard taxonomy. The first type of malocclusion (neutral occlusion): The maxillary and mandibular and dental arch in the near and far relations between the normal, that is in the middle (occlusion), the first molar on the near buccal bite At the mid-cheek groove of the first permanent molars, the anterior teeth that appear at this time are crowded, anti-occlusion, anterior processes, etc. (Figure 3-24).