Souza Rodrigo Matos de, Oliveira Henrique Telles de, Farret Marcel Marchiori
Departamento de Ortodontia, Fundação para Reabilitação das Deformidades Crânio-Faciais, Lajeado, RS, Brazil.
Dental Press J Orthod. 2020 May;25(3):54-64. doi: 10.1590/2177-6709.25.3.054-064.oar. Epub 2020 Aug 19.
The cleft lip and palate is the most frequent craniofacial anomaly and as a consequence of this malformation some inadequate occlusal relationship between the arches are observed. Furthermore, dental absences, individual positioning changes of teeth as rotations, and in more rare situations the transpositions may be found as well.
In this context, in this article is reported a case of a 9-year-old patient with unilateral cleft lip and palate, with anterior and posterior crossbite on the left side, absence of the maxillary left lateral incisor, and transposition of the maxillary left canine and first premolar. The patient was treated with slow maxillary expansion, secondary graft and fixed orthodontic appliance, transposition maintenance and closing of the lateral incisor space with the first premolar, by means of mesialization of the posterior teeth.
At the end of the treatment, good intercuspation and an important aesthetic gain for the patient were achieved. The analysis three years after treatment revealed a good stability of the results obtained.
唇腭裂是最常见的颅面畸形，由于这种畸形，可观察到牙弓之间存在一些咬合关系不良的情况。此外，还可能出现牙齿缺失、牙齿个别位置改变如旋转，以及更罕见的牙齿换位情况。
在此背景下，本文报告了一例9岁单侧唇腭裂患者的病例，该患者左侧存在前后牙反合，上颌左侧侧切牙缺失，上颌左侧尖牙与第一前磨牙换位。患者接受了上颌慢速扩弓、二期植骨及固定正畸矫治器治疗，通过后牙近中移动维持换位并关闭侧切牙间隙，同时使用第一前磨牙。
治疗结束时，实现了良好的牙尖交错关系，患者美观度也有显著提升。治疗三年后的分析显示，所取得的结果具有良好的稳定性。
