Department of Orthodontics, Faculty of Dentistry, University European of Valencia, Valencia, Spain.
Department of Orthodontics, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain.
PLoS One. 2018 Aug 13;13(8):e0201102. doi: 10.1371/journal.pone.0201102. eCollection 2018.
One of the main objectives of orthodontic treatment is to achieve an esthetic smile. This study set out to analyze differences in the perception of smile esthetics among patients before and after receiving orthodontic treatment. 250 Spanish patients analyzed a single photograph in which, by means of computer software, midline diastema, black triangle, gingival margin of the left central incisor, and gingival ("gummy") smile were altered. Each patient analyzed these images before and after undergoing orthodontic treatment. Patients scored the photographs on a scale from 1 to 10. Statistical analyses of each group's level of perception were carried out, identifying significant differences in evaluations before and after treatment, and in relation to subjects' gender and age. Patients presented significant differences in the esthetic perception of midline diastema and gummy smile anomalies after they had completed orthodontic treatment. Gender influenced the perception of smile esthetics, whereby women were significantly more critical of midline diastema, black triangle and gingival margin of the upper central incisor than men. The age variable also showed significant differences in the perception of midline diastema and black triangle anomalies. The perception of smile esthetics of some dental anomalies changes as a result of orthodontic treatment. Gender influences the perception of some of the dental anomalies studied.
正畸治疗的主要目标之一是获得美观的笑容。本研究旨在分析正畸治疗前后患者对微笑美观的感知差异。对 250 名西班牙患者进行了分析，他们分析了一张照片，通过计算机软件改变了中线间隙、黑三角、左侧中切牙的牙龈边缘和牙龈（“牙龈”）微笑。每位患者在接受正畸治疗前后分析这些图像。患者对照片进行 1 到 10 的评分。对每个组的感知水平进行了统计分析，发现治疗前后以及与患者性别和年龄相关的评估存在显著差异。正畸治疗后，患者对中线间隙和牙龈微笑异常的美观感知存在显著差异。性别影响微笑美观的感知，女性对中线间隙、黑三角和上中切牙牙龈边缘的评价明显高于男性。年龄变量也显示中线间隙和黑三角异常的感知存在显著差异。一些牙齿异常的微笑美观感知会因正畸治疗而改变。性别影响研究中一些牙齿异常的感知。
