■亚洲女性更喜欢光滑和狭窄的下颌外观。回顾性队列研究的目的是评估引导板辅助下颌角切除术(MAO)改善具有正常咬合关系的亚洲女性下颌角肥大(MAH)患者的下颌对称性。
■我们回顾性地检查了11例具有正常咬合关系的不对称MAH患者,他们在9月之间在上海市第九人民医院接受了MAO,2020年1月,2022年。根据CT数据设计术前计划,并在手术过程中使用金属导向板执行。术前和术后一周的CT扫描用于评估测量,包括Height_Go,发散_Go,ZyZy-GoGo,截骨体积,评估对称性。为了精确,将术后CT与术前设计进行比较,评估截骨距离,angle,和音量错误。在6个月的随访中使用Likert量表评估患者的满意度。适当时给予二次脂肪填充程序。在SPSS中使用配对t检验进行统计学分析。
■11名患者的平均年龄为28.5岁(范围23-34岁)。其中2例进行了脂肪填充程序。随访期间未观察到并发症。术后结果与设计无统计学差异,演示精度在2毫米以内。5mm内的Height_Go视差得到显著校正,将不对称性从术前的15.09%减少到术后的2.74%。在6个月的随访中,5例患者的满意度为4.5。
■引导板辅助下颌角截骨术可实现有效而精确的手术。这种方法证明了矫正下颌不对称性的安全选择,达到患者满意度。
UNASSIGNED: Asian women prefer a smooth and narrowed mandibular appearance. The purpose of the retrospective cohort study is to evaluate guide plate-assisted mandibular angle ostectomy (MAO) in improving mandibular symmetry for Asian female patients with mandibular angle hypertrophy (MAH) with normal occlusal relationship.
UNASSIGNED: We retrospectively examined 11 patients with asymmetry MAH with normal occlusal relationship who received MAO at Shanghai Ninth People\'s Hospital between September, 2020, and January, 2022. Preoperative plans were designed based on CT data and executed using metal guide plate during the operation. Preoperative and one-week postoperative CT scans were used to assess measurements including Height_Go, Divergence_Go, ∠ZyZy-GoGo, and osteotomy volume, to evaluate symmetry. For precision, compare the postoperative CT with the preoperative design, assessing osteotomy distance, angle, and volume error. Patient satisfacation was evaluated with Likert Scale in 6-month follow-up. Secondary lipofilling procedures were given as appropriate. Statistical analysis was performed using paired t-tests in SPSS.
UNASSIGNED: The mean age of the 11 patients was 28.5 years (range 23-34 years). 2 of these underwent lipofilling procedures. No complications were observed during the following-up. Postoperative results were not statistically different from the design, demonstrating a precision of within 2 mm. Height_Go disparity within 5 mm get corrected notably, reducing asymmetry from 15.09% preoperatively to 2.74% postoperatively. Patients satisfaction was rated at 4.5 out of 5 in 6 month follow-up.
UNASSIGNED: Guide plate-assisted mandibular angle osteotomies achieve effective and precise surgery. This approach demonstrates a safe option for correction for mandibular asymmetry, achieving patient satisfaction.