1. 抽屉式截骨颏成形术在长颏畸形矫正中的应用.
- Author
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王郁, 宋国栋, 曾涵, 陈宗, 赖晨智, 郭小双, and 靳小雷
- Abstract
Objective To investigate the efficacy of drawer-genioplasty in correcting the long-chin deformity and preventing postoperative sagging of submental soft tissues. Methods Forty-two patients with long-chin deformity admitted to the Department of Craniomaxillofacial Surgery, Plastic Surgery Hospital from October 2020 to December 2023 were selected for this study. The modified drawer-genioplasty was performed through an intraoral incision approach, using subapical and mandibular contouring osteotomy. The osteotomy lines were designed and performed during surgery to minimize damage to the bone attachments of the anterior belly of the digastric muscle, mylohyoid muscle, and geniohyoid muscle to protect the floor-of-mouth muscles adequately. Digital technology enabled the assessment of surgical outcomes through the analysis of three-dimensional reconstruction of bone and facial scanning. Follow-up visits were conducted 6-12 months post-surgery. Results All patients achieved uncomplicated primary healing at gingiva-labial sulcus incisions, without any occurrences of hematoma, infection, or bone necrosis. The digital analysis revealed a postoperative ratio change of 1:0.86 between the chin bones and soft tissues. Measurements demonstrated an increase in R1 (the ratio of the middle and lower face) from preoperative 0.82±0.09 to postoperative values 0.92±0.11, as well as an increase in R2 (the ratio of the upper and lower lips) from preoperative 0.52±0.06 to postoperative values 0.63±0.05. However, there was an increase in the mentocervical angle from preoperative 104.90°± 8.02° to postoperative 111.50°±7.03°, this value was still within the normal range. The results above demonstrated statistically significant differences (P<0.05). Two patients experienced transient lower lip numbness postoperatively, which resolved at four months and ten months respectively. All patients expressed satisfaction with their postoperative facial contour morphology. Conclusion The modified drawergenioplasty demonstrates both safety and efficacy in correcting patients with long chin deformity, while effectively preventing postoperative sagging of the submental soft tissues, thereby exhibiting significant clinical applicability. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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