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使用临时锚固装置通过全下牙弓近中移动对正颌掩饰病例进行再治疗。

Retreatment of an orthognathic camouflaged case by total lower arch mesialization using temporary anchorage device.

作者信息

Hemmatpour Siamak, Nahvi Golnaz, Oonchi Mehdi

机构信息

Department of Orthodontics, School of Dentistry, Islamic Azad University, Tehran, Iran.

Department of Orthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

出版信息

Dent Res J (Isfahan). 2021 Sep 25;18:78. doi: 10.4103/1735-3327.326651. eCollection 2021.

Abstract

Mandibular tooth extractions for camouflage treatments in borderline Class III patients may end up with unpleasing esthetic results which may lead the patient seeking further complicated retreatments. In this case report, we presented a patient's retreatment with a combined orthodontic and orthognathic surgery treatment plan. The treatment strategy involved an innovative temporary anchorage device (TAD)-based method for total mandibular arch mesialization instead of space reopening for first lower premolar replacement with implants. In the current case report, orthognathic management of a Class III adult female is discussed. The patient had a history of an esthetically unsuccessful previous camouflaged orthodontic treatment with two lower premolar extractions. She was prepared for orthognathic surgery using an innovative custom-made sliding jig based on miniscrews for total mandibular arch mesialization with the aim of dental arch decompensation. After gaining the optimal dental arch discrepancy, the patient had orthognathic surgery (maxillary advancement and mandibular setback and advancement genioplasty). Total mandibular dental arch mesialization with the aim of dental arch discrepancy preparation was successfully conducted using TADs. By means of the innovative miniscrew-anchored sliding jig, the patient's satisfactory esthetic and occlusal results were obtained in 22 months. With innovative application of the miniscrews, more practical and reasonable alternatives are available to replace conventional and complicated treatment plans such as space reopening for implants in patients with unsuccessful previous orthodontic therapies.

摘要

对临界III类患者进行掩饰性治疗时拔除下颌牙齿,最终可能会导致美学效果不佳,这可能会使患者寻求更复杂的后续治疗。在本病例报告中,我们介绍了一位患者采用正畸与正颌外科联合治疗方案的后续治疗情况。治疗策略采用了一种基于创新型临时锚固装置(TAD)的方法,使下颌全牙弓整体近中移动,而不是通过开辟间隙来用种植体替代下颌第一前磨牙。在本病例报告中,讨论了一位III类成年女性的正颌治疗情况。该患者曾有过一次美学效果不佳的掩饰性正畸治疗史,拔除了两颗下颌前磨牙。她准备接受正颌手术,使用一种基于微螺钉的创新型定制滑动定位器使下颌全牙弓整体近中移动,目的是解除牙弓代偿。在获得最佳的牙弓差异后,患者接受了正颌手术(上颌前徙、下颌后退及颏成形术)。使用TAD成功实现了下颌全牙弓整体近中移动,以准备牙弓差异。通过创新型微螺钉锚固滑动定位器,在22个月内使患者获得了满意的美学和咬合效果。通过微螺钉的创新应用,对于先前正畸治疗失败的患者,有了更实用、合理的替代方案来取代诸如为种植体开辟间隙等传统且复杂的治疗方案。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5774/8543102/30b09c4ea0ae/DRJ-18-78-g001.jpg

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