Conservative treatment of Angle Class III malocclusion with anterior crossbite

Angle Class III malocclusion is characterized by anteroposterior dental discrepancy which might be associated or not with skeletal changes. Class III molar relationship is associated with vertical or lingually tipped mandibular incisors and a usually concave profile. These characteristics seriously affect facial esthetics and most frequently are the reason why patients seek orthodontic treatment. This case was presented to the committee of the Brazilian Board of Orthodontics and Facial Orthopedics (BBO) as part of the requisites to become a BBO Diplomate.

安氏Ⅲ类错畸形（Angle Class III malocclusion）以矢状向牙性不调为特征，可伴随或不伴随骨骼改变。安氏Ⅲ类磨牙关系常与下颌切牙垂直倾斜或舌向倾斜相关，患者多呈现凹面型。此类畸形会严重影响颜面美观，也往往是患者寻求正畸治疗的主要原因。本病例提交至巴西正畸与颌面整形外科委员会（Brazilian Board of Orthodontics and Facial Orthopedics, BBO），作为申请成为BBO认证专科医师的必备考核材料之一。