在口内垂直臼齿截骨术(IVRO)中对臼齿近端截骨后,利用废弃的骨碎片进行齿根成形术。

IF 2 Q2 DENTISTRY, ORAL SURGERY & MEDICINE Maxillofacial Plastic and Reconstructive Surgery Pub Date : 2024-07-19 DOI:10.1186/s40902-024-00433-w
Sang-Hoon Kang, Chan-Young Lee, Taek-Geun Jun, Min-Jun Kang
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引用次数: 0

摘要

背景:基于三维(3D)正颌模拟,本技术报告介绍了一种利用下颌骨近端骨片进行增量基因成形术的方法,该骨片通常在口内垂直颌骨截骨术(IVRO)中被丢弃:一名 43 岁的女性患者被诊断为 III 级错颌畸形,表现为下颌骨突出和面部高度过长,她接受了手术治疗。手术方案包括使用 IVRO 进行下颌后缩定位和增高成形术。三维正颌手术包括增高成形术模拟。在进行 IVRO 后,对过度拉长的下颌近段进行了切除。将下颌骨近端骨片的下半部分进行定位,使其符合推进成形术的要求。在确保骨片的位置与模拟手术一致后,对每块骨片进行固定。术后1.5年,增量基因成形术上的移植骨保持良好,骨质略有吸收:结论:使用下颌骨近端骨片(通常在 IVRO 中被丢弃)进行增量基因成形术可减少与下巴截骨术相关的手术并发症。当需要进行二次颏部成形术时,颏部成形术与截骨术、移动切下的骨片、部分刨骨截骨术和额外的植骨术都是可行的选择。
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Augmentation genioplasty using discarded bone fragments following proximal segment osteotomy of the ramus in intraoral vertical ramus osteotomy (IVRO).

Background: Based on a three-dimensional (3D) orthognathic simulation, this technical report introduces a method for augmentation genioplasty using a proximal bone fragment of the mandible, which is typically discarded in intraoral vertical ramus osteotomy (IVRO).

Results: A 43-year-old female patient diagnosed with Class III malocclusion, presenting with a protruding mandible and long facial height, underwent surgical treatment. The surgical plan involved mandibular setback position using IVRO and augmentation genioplasty. The 3D orthognathic surgery including augmentation genioplasty simulation was performed. An excessively elongated proximal segment was sectioned following IVRO. The inferior part of the sectioned proximal bone fragment of the mandible was positioned to align with the requirements of advancement genioplasty. After ensuring that the placement of the fragment matched that of the simulated surgery, each bone fragment was fixed. At 1.5 years post-surgery, the grafted bone on the augmentation genioplasty was well maintained, with slight bone resorption.

Conclusions: Augmentation genioplasty using the proximal bone fragment of the mandible, which is typically discarded in IVRO, reduces the surgical complications associated with chin osteotomy. When a secondary genioplasty is required, genioplasty with osteotomy, movement of the cut bone fragments, partial bone-shaving osteotomy, and additional bone grafting are viable options.

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来源期刊
Maxillofacial Plastic and Reconstructive Surgery
Maxillofacial Plastic and Reconstructive Surgery DENTISTRY, ORAL SURGERY & MEDICINE-
CiteScore
4.30
自引率
13.00%
发文量
37
审稿时长
13 weeks
期刊最新文献
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