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成人骨性III类错牙合畸形掩饰性治疗中垂直距离的管理

Management of the Vertical Dimension in the Camouflage Treatment of an Adult Skeletal Class III Malocclusion.

作者信息

Sevillano Manuel Gustavo Chávez, Diaz Gina Judith Flores, de Menezes Luciane Macedo, Nunes Livia Kelly Ferraz, Miguel José Augusto Mendes, Quintão Cátia Cardoso Abdo

机构信息

Department of Orthodontics, National University of San Marcos, Lima, Perú. Av. GermánAmézaga 375, Cercado de Lima-Lima, Peru.

Orthodontics Professor of the School of Health and Life Science-Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Brazil. Ipiranga Avenue, 6681 Partenon-Porto Alegre RS, Brazil.

出版信息

Case Rep Dent. 2020 Aug 11;2020:8854588. doi: 10.1155/2020/8854588. eCollection 2020.

Abstract

Treating skeletal class III malocclusions is one of the biggest challenges in Orthodontics. Given the complexity of these cases, orthognathic surgery is often the best treatment option. However, many patients refuse this treatment due to its risks, morbidity, and costs involved. Alternatively, dental compensation can be planned for some of these skeletal problems. This case report presents a dentoalveolar compensation in the orthodontic treatment of a 20-year-old female patient with class III malocclusion, concave profile, anterior crossbite, mandibular prognathism, maxillary retrusion, and a vertical deficiency in the posterior region. Treatment planning involved a multiloop edgewise archwire (MEAW) associated with intermaxillary elastics with counterclockwise rotation of the occlusal plane in the posterior region of the maxilla aiming at obtaining an increased posterior vertical dimension. After 24 months of treatment, the severe anterior crossbite was corrected, and the skeletal class III relationship was camouflaged. At the end of the orthodontic treatment, it was possible to observe an improved facial profile, a nice smile, and a functional occlusion. The results remained stable at a three-year follow-up. The MEAW, associated with the use of elastics, seems to be an effective treatment option for class III camouflage with reduced posterior vertical dimension with no need for additional anchoring devices but requiring adequate bending of wires and patient compliance.

摘要

治疗骨性III类错牙合畸形是正畸领域最大的挑战之一。鉴于这些病例的复杂性,正颌手术往往是最佳治疗选择。然而,许多患者因手术风险、发病率和费用而拒绝这种治疗。另外,对于其中一些骨骼问题可以考虑进行牙代偿。本病例报告介绍了一名20岁III类错牙合畸形女性患者的正畸治疗中的牙牙槽代偿情况,该患者面部凹陷、前牙反牙合、下颌前突、上颌后缩且上颌后部垂直高度不足。治疗计划包括使用多曲方丝弓(MEAW)并配合颌间弹力牵引,使上颌后部牙合平面逆时针旋转,旨在增加上颌后部垂直高度。经过24个月的治疗,严重的前牙反牙合得到矫正,骨性III类关系得以掩饰。正畸治疗结束时,面部轮廓改善、笑容美观且咬合功能良好。三年随访时结果保持稳定。MEAW配合弹力牵引似乎是一种有效的治疗方法,可用于掩饰垂直高度降低的III类错牙合畸形,无需额外的支抗装置,但需要对弓丝进行适当弯制并要求患者配合。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3e11/7441420/a353b5b97615/CRID2020-8854588.001.jpg

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