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不拔牙和拔牙矫治的安氏Ⅱ类 1 分类错牙合患者的长期美观评价

Long-term profile attractiveness in Class II Division 1 malocclusion patients treated with and without extractions.

机构信息

Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil.

Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil.

出版信息

Am J Orthod Dentofacial Orthop. 2019 Mar;155(3):362-371. doi: 10.1016/j.ajodo.2018.04.030.

Abstract

INTRODUCTION

This study evaluated the influence of Class II treatment protocols in profile attractiveness.

METHODS

Sixty-eight patients with initial full Class II Division 1 malocclusion, orthodontically treated an average of 15 years before, and matched by sex, age, time after treatment, orthodontic outcomes, and overjet, were compared. Three groups were formed, according to the treatment protocol: NE, nonextraction (n = 20; mean age 29.94 years, 15.62 years after treatment); 2E, 2-premolar extractions (n = 27; mean age 30.56 years, 15.09 years after treatment); and 4E, 4-premolar extractions (n = 21; mean age 32.29 years, 17.20 years after treatment). Cephalometric measurements and profile silhouettes were obtained from posttreatment and long-term posttreatment lateral cephalograms. With a 10-point numeric scale, 77 orthodontists and 77 laypeople rated profile attractiveness of each silhouette on a website.

RESULTS

The raters' posttreatment and long-term posttreatment scores, respectively, were: NE 4.76 and 4.32; 2E 5.35 and 5.08; and 4E 4.53 and 4.33.

CONCLUSIONS

The posttreatment profile attractiveness was significantly higher in the 2E than in the 4E group, and in the NE group it was similar to the others. The long-term profile attractiveness in the 2E group was significantly greater compared with the NE and 4E groups.

摘要

简介

本研究评估了 II 类治疗方案对侧貌美观度的影响。

方法

比较了 68 名初始完全 II 类错牙合畸形 1 分类患者,这些患者平均接受正畸治疗 15 年,然后根据治疗方案分为三组:NE 组(无拔牙,n=20;平均年龄 29.94 岁,治疗后 15.62 年);2E 组(拔除 2 颗前磨牙,n=27;平均年龄 30.56 岁,治疗后 15.09 年);4E 组(拔除 4 颗前磨牙,n=21;平均年龄 32.29 岁,治疗后 17.20 年)。从治疗后和长期治疗后的侧位头颅侧位片上获得头影测量值和侧貌轮廓图。77 名正畸医生和 77 名非专业人士在网站上对每个轮廓图的侧貌美观度进行了 10 分制评分。

结果

治疗后和长期治疗后,评价者的评分分别为:NE 组 4.76 和 4.32;2E 组 5.35 和 5.08;4E 组 4.53 和 4.33。

结论

与 4E 组相比,2E 组的治疗后侧貌美观度显著更高,而 NE 组与其他两组相似。与 NE 和 4E 组相比,2E 组的长期侧貌美观度显著更高。

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