Marshall K
Aust Orthod J. 2000 Jul;16(2):108-14.
The 13-year-old female patient presented for correction of a severe Class III malocclusion with a Class III skeletal pattern. This was considered an appropriate age for treatment as earlier treatment may have been subject to relapse because significant facial growth may have occurred after treatment, and because treatment at a later age may have required orthognathic surgery. Initially, maxillary expansion was provided to widen the maxilla and to free the circum-maxillary sutures. Maxillary protraction headgear was worn to perform sagittal skeletal improvement. Fixed orthodontic appliances were placed to align the dentition and Class III elastics were used to improve intercuspation and stability. Patient cooperation was crucial for success. The skeletal changes provided rewards that included significantly improved facial and dental appearance, while avoiding orthognathic surgery.
这名13岁的女性患者前来矫正严重的III类错牙合畸形及III类骨骼型。这被认为是一个适合治疗的年龄,因为早期治疗可能会出现复发,原因是治疗后可能会发生显著的面部生长,而且在较晚年龄进行治疗可能需要正颌手术。最初,进行上颌扩弓以扩宽上颌并松解上颌周围的缝线。佩戴上颌前牵引矫治器以进行矢状向骨骼改善。放置固定正畸矫治器以排齐牙列,并使用III类弹力牵引来改善牙尖交错关系和稳定性。患者的配合对成功至关重要。骨骼改变带来了显著改善面部和牙齿外观等回报,同时避免了正颌手术。