School of Life Sciences, Pontifical Catholic University of Paraná, Curitiba, Brazil.
Center for Advanced Dental Education, Saint Louis University, St. Louis, Mo.
Am J Orthod Dentofacial Orthop. 2020 Feb;157(2):245-258. doi: 10.1016/j.ajodo.2018.09.021.
An adolescent girl, aged 12 years 11 months, was evaluated for orthodontic treatment. Her chief complaints included a difficulty with keeping her lips passively closed and excessive gingival exposure upon smiling. Her treatment plan included (1) restriction of maxillary growth with cervical headgear, (2) extraction of the maxillary first premolars to reduce the maxillary protrusion and the mandibular second premolars to facilitate Class II dental correction, and (3) management of maxillary incisor intrusion via anchoring with mini-implants. When indicated, even in the absence of large space discrepancies, extractions can be beneficial to the patient. The final results showed an attractive smile, passive lip seal, and a more esthetic and balanced facial profile. Retention records confirmed the stability of the treatment. The 5-year follow-up visit revealed that the treatment results were quite stable.
一位 12 岁 11 个月大的青春期女孩前来接受正畸治疗。她的主要诉求包括难以被动闭唇和微笑时牙龈过度暴露。她的治疗计划包括：(1) 使用颈头帽限制上颌生长；(2) 拔除上颌第一前磨牙以减少上颌前突，拔除下颌第二前磨牙以利于 II 类牙齿矫正；(3) 通过微型种植体锚固来控制上颌切牙内倾。在需要时，即使没有大的间隙差异，拔牙对患者也是有益的。最终结果显示出一个有吸引力的笑容、被动的唇闭和更美观、平衡的面部轮廓。保持记录证实了治疗的稳定性。5 年随访显示，治疗效果非常稳定。
