Venkatesh Shivanand, Ganeshkar Sanjay V, Rozario Joe
Int J Orthod Milwaukee. 2014 Winter;25(4):39-43.
This case report describes the treatment of a male patient, aged 16 years and 5 months, with a Class II division 1 malocclusion, who showed severe anterior protrusion and lower anterior crowding along with missing upper left lateral incisor. Treatment plan consisted of extraction of upper right first premolar and lower second premolars. No extraction was performed on the upper left quadrant instead canine was substituted as lateral incisor and premolar as canine to establish a good occlusion. Power arms were used for intrusion and retraction of the anterior teeth. After active treatment period of 21 months, the appliances were removed after establishing ideal overjet, overbite and other occlusal relationships.
本病例报告描述了一名16岁5个月的男性患者，患有安氏II类1分类错牙合畸形，表现为严重的前牙前突、下前牙拥挤以及左上侧切牙缺失。治疗方案包括拔除右上第一前磨牙和下第二前磨牙。左上象限未拔牙，而是用尖牙替代侧切牙，前磨牙替代尖牙以建立良好的咬合关系。使用弹力臂对前牙进行压低和后缩。经过21个月的主动治疗期，在建立了理想的覆盖、覆牙合和其他咬合关系后拆除矫治器。
