Rao S A, Thomas A M, Chopra S
Department of Pediatric Dentistry, Christian Dental College, Ludhiana, Punjab, India.
J Indian Soc Pedod Prev Dent. 2010 Jul-Sep;28(3):237-40. doi: 10.4103/0970-4388.73782.
Class II malocclusions are seen due to the underdevelopment of the mandible in most of the cases. To compensate for the mandible retrusive position, there is flaring of the lower anterior teeth or retroclination of the central incisors as a compensatory mechanism seen in Class II division 2 type of malocclusion. This case report evaluates the skeletal and dental changes when a 12-year-old female patient with Class II div 2 malocclusion was treated with a modified anterior inclined plane. The postreatment data suggested that there were no significant changes in the vertical skeletal parameters. The upper central incisors were significantly realigned by proclination along with retroclination of the lateral incisors. There was significant increase in the mandibular length. The results revealed that the modified anterior inclined plane showed good results in the treatment of a case of Class II div 2 malocclusion.
在大多数情况下，II类错牙合是由于下颌骨发育不足所致。为了代偿下颌后缩位置，在II类2分类错牙合中可看到下前牙唇倾或中切牙舌倾作为一种代偿机制。本病例报告评估了一名12岁II类2分类错牙合女性患者采用改良前斜面矫治器治疗后的骨骼和牙齿变化。治疗后数据表明垂直骨骼参数无显著变化。上中切牙通过唇倾显著重新排列，同时侧切牙舌倾。下颌长度显著增加。结果显示改良前斜面矫治器在治疗II类2分类错牙合病例中显示出良好效果。
