Yang Ching-Yu, Lin Chih-Chieh, Wang I-Jia, Chen Yuan-Hou, Yu Jian-Hong
Department of Orthodontics, China Medical University Hospital, Taichung 404327, Taiwan.
Department of Orthodontics, China Medical University and Medical Center, Taichung 40447, Taiwan.
World J Clin Cases. 2023 Jun 16;11(17):4142-4151. doi: 10.12998/wjcc.v11.i17.4142.
Treatment for deep overbite cases can be difficult. This case report presents some techniques with improved super-elastic Ti-Ni alloy wire (ISW) for deep overbite correction.
A 21-year-old woman had a chief complaint of flaring maxillary teeth. Orthodontic evaluation revealed a skeletal class II malocclusion and a convex profile appearance. A deep overbite with palatal impingement and large overjet were also noted. Bilateral maxillary first premolars were extracted, and spaces were closed using a closed-coil spring and elastic chain. The deep overbite was corrected by applying the ISW curve and ISW intrusion arch. Intermaxillary elastics was used to adjust the intermaxillary relationship. Active treatment took approximately 3 years, and the appearance and dentition alignment noticeably improved.
The use of the ISW technique in a case of skeletal class II malocclusion with deep overbite achieved a desirable result, and the patient was satisfied with the treatment outcome.
深覆合病例的治疗可能具有挑战性。本病例报告介绍了一些使用改良型超弹性钛镍合金丝（ISW）矫正深覆合的技术。
一名21岁女性，主要诉求为上颌牙齿外展。正畸评估显示为骨性II类错牙合畸形和凸面型外观。还发现存在腭部压迫的深覆合以及较大的覆盖。拔除双侧上颌第一前磨牙，使用闭合曲弹簧和弹力链关闭间隙。通过应用ISW曲线和ISW压低弓矫正深覆合。使用颌间弹力牵引调整颌间关系。主动治疗约持续3年，外观和牙列排列明显改善。
在伴有深覆合的骨性II类错牙合病例中使用ISW技术取得了理想效果，患者对治疗结果满意。
