Johnny Liaw, Shin-Huei Wang, Hou-Kun Chen, Yi-Jane Chen
{"title":"Active vertical control with skeletal anchorage for optimizing facial profile in a severe Class II high-angle protrusion case.","authors":"Johnny Liaw, Shin-Huei Wang, Hou-Kun Chen, Yi-Jane Chen","doi":"10.2319/041524-298.1","DOIUrl":null,"url":null,"abstract":"<p><p>This case report describes the nonsurgical management of a patient with a Class II skeletal pattern, retrognathic mandible, steep mandibular angle, maxillary vertical excess, and lip incompetence. The treatment approach involved orthodontic mechanics supported with skeletal anchorage to achieve maximal intrusion and retraction of the dentition. A novel elastic hanging rack appliance, supported by midpalatal miniscrews, was used. A maximal anchorage setup for active vertical control on both arches was illustrated. Significant improvement in the facial profile was achieved with optimal occlusion. Cephalometric analysis revealed successful incisor retraction and intrusion, as well as a forward rotation of the mandible. The treatment outcome illustrates the impact of active vertical control on orthodontic camouflage treatment for severe protrusion.</p>","PeriodicalId":94224,"journal":{"name":"The Angle orthodontist","volume":" ","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"The Angle orthodontist","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2319/041524-298.1","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
This case report describes the nonsurgical management of a patient with a Class II skeletal pattern, retrognathic mandible, steep mandibular angle, maxillary vertical excess, and lip incompetence. The treatment approach involved orthodontic mechanics supported with skeletal anchorage to achieve maximal intrusion and retraction of the dentition. A novel elastic hanging rack appliance, supported by midpalatal miniscrews, was used. A maximal anchorage setup for active vertical control on both arches was illustrated. Significant improvement in the facial profile was achieved with optimal occlusion. Cephalometric analysis revealed successful incisor retraction and intrusion, as well as a forward rotation of the mandible. The treatment outcome illustrates the impact of active vertical control on orthodontic camouflage treatment for severe protrusion.
本病例报告描述了对一名具有 II 类骨骼形态、下颌后突、下颌角陡峭、上颌垂直过度和唇部发育不全的患者的非手术治疗。治疗方法包括在骨骼固定的支持下进行正畸力学矫正,以实现牙列的最大内收和后缩。治疗中使用了一种新型的弹性挂架矫治器,并由腭中微型螺钉支撑。图解说明了在两个牙弓上进行主动垂直控制的最大锚定设置。通过优化咬合,面部轮廓得到了显著改善。头颅测量分析表明,门牙成功后缩和内收,下颌骨向前旋转。治疗结果说明了主动垂直控制对严重前突的正畸伪装治疗的影响。