Kim Y H, Han U K, Lim D D, Serraon M L
Department of Orthodontics, College of Dentistry, University of the Philippines, Philippines.
Am J Orthod Dentofacial Orthop. 2000 Jul;118(1):43-54. doi: 10.1067/mod.2000.104830.
Successful treatment of anterior openbite malocclusion is considered one of the most challenging areas in orthodontics. This study was designed to evaluate the treatment effects of the multiloop edgewise archwire therapy in openbite correction and to investigate the stability of correction during a 2-year follow-up period. The subjects consisted of 55 white patients who presented with anterior openbite. The subjects were divided into 2 groups: the growing group included 29 patients and the nongrowing group included 26 patients. The lateral cephalograms were analyzed for skeletal, esthetic, and dentoalveolar changes. Analysis of the pretreatment and posttreatment cephalometric radiographs revealed that the overbite increased an average of 4 mm in both the growing and the nongrowing groups. Analysis of the posttreatment and follow-up cephalometric radiographs proved that the treatment results obtained by this therapy were very stable. The changes in overbite during the 2-year follow-up period were not significant.
成功治疗前牙开颌错颌畸形被认为是正畸领域最具挑战性的领域之一。本研究旨在评估多曲方丝弓矫治技术在开颌矫治中的治疗效果,并在2年的随访期内研究矫治效果的稳定性。研究对象为55例患有前牙开颌的白人患者。将研究对象分为两组:生长发育期组包括29例患者,非生长发育期组包括26例患者。对头颅侧位片进行骨骼、美学和牙牙槽变化分析。对治疗前和治疗后的头影测量X线片分析显示,生长发育期组和非生长发育期组的覆合平均增加4mm。对治疗后和随访时的头影测量X线片分析证明,该治疗方法所获得的治疗效果非常稳定。在2年随访期内覆合的变化不显著。