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Main Instructor Yu-Ling Tsai
I-Hua Liu
Department / Institution Department of Orthodontics, Chi Mei Medical Center, Tainan City, Taiwan
Classification Case report
「Objective」 The Class II division 2 malocclusion is characterized by retroclined maxillary incisors, a deep overbite, and a Class II molar relationship. Bite opening and establishment of adequate inclination of incisors with ideal overbite and overjet are major treatment objectives.
「Case」 A 19-year-old female patient was presented with chief complaint of crowding. Diagnostic records revealed skeletal Class I malocclusion with low mandibular plane angle, dental Class II malocclusion with 100% deep overbite. Extraoral examinations revealed straight lateral profile. Treatment plan was non-extraction treatment combined total maxillary arch distalization with temporary anchorage devices. Deep overbite was corrected by a compensatory curved maxillary archwire. Anterior root torquing spring was applicated to correct inclination of maxillary anterior teeth. After 36 months of active treatment, Class I canine and molar relationship were achieved bilaterally and ideal inclination of incisors with proper overbite and overjet were established.
「Discussion & Summary」 Maxillary molar distalization is the method of choice in the treatment of Class II division 2 malocclusion. In our case, combined temporary anchorage devices as absolute anchorage, a compensatory curved maxillary archwire and an anterior root torque auxiliary, ideal inclinations of incisors were established. Moreover, patient's facial aesthetics were maintained and she was satisfied about the treatment result.
Non-extraction Treatment Combined with Temporary Anchorage Devices of Class II Division 2 Malocclusion- A Case Report