社会性微笑对称性与面部对称性的相关性。
Correlation of social smile symmetry with facial symmetry.
机构信息
Department of Oral and Maxillofacial Surgery, School of Dentistry, Kermanshah University of Medical Sciences, Shariati Street, Kermanshah, 67139546581, Iran.
Department of Orthodontic, School of Dentistry, Kermanshah University of Medical Sciences, Shariati Street, Kermanshah, 67139546581, Iran.
出版信息
BMC Oral Health. 2023 Aug 14;23(1):572. doi: 10.1186/s12903-023-03260-z.
BACKGROUND
This study aimed to assess the correlation of social smile symmetry with facial symmetry.
METHODS
In this cross-sectional study, frontal view photographs were obtained from 169 eligible patients at rest and smiling with a camera at the level of their nose tip. Several landmarks were selected for facial symmetry and measured at rest and social smiling at the two sides of the face. The respective formula was used to calculate the asymmetry index (AI). The mean values for each AI were calculated, and the correlation between the criteria for a symmetric smile in a social smile with the criteria for facial symmetry, and the correlation between the difference in symmetry criteria at rest and social smiling with facial symmetry criteria were analyzed.
RESULTS
Significant correlations were noted between Oc-b AI (smile) and Sn-B (rest) facial AI (P = 0.046), An-a (smile) AI and Gn-a (rest) facial AI (P = 0.002), An-b (smile) AI and Sn-b (rest) facial AI (P < 0.001), Pog-a (smile) and Sn-a (rest) facial AI (P < 0.001), Nt-a (smile) and Sn-a (rest) facial AI (P < 0.001), Nt-b (smile) and Sn-b (rest) facial AI (P < 0.001), Ph-a (smile) and Sn-a (rest) facial AI (P < 0.001), Ph-b (smile) and Sn-b (smile) facial AI (P = 0.007), Oc-b AI (difference) and Gn-b (rest) facial AI (P = 0.031), Oc-Pog (difference) AI and Gn-b (rest) facial AI (P = 0.041), An-b (difference) AI and Sn-b (rest) facial AI (P < 0.001), Nt-a (difference) and Sn-a (rest) facial AI (P = 0.006), Nt-b (difference) and Sn-b (rest) facial AI (P < 0.001), and Ph-b (difference) and Sn-b (rest) facial AI (P < 0.001).
CONCLUSIONS
A significant correlation exists between social smile symmetry and facial symmetry.
背景
本研究旨在评估社交微笑对称性与面部对称性之间的相关性。
方法
在这项横断面研究中，使用相机从 169 名符合条件的患者的正面拍摄照片，患者在休息和微笑时相机与鼻尖平齐。选择几个标志点用于面部对称性，并在两侧面部的休息和社交微笑时进行测量。使用各自的公式计算不对称指数 (AI)。计算每个 AI 的平均值，并分析社交微笑中对称微笑标准与面部对称性标准之间的相关性，以及休息和社交微笑时对称性标准之间的差异与面部对称性标准之间的相关性。
结果
在社交微笑中的 Oc-b AI（微笑）与 Sn-B（休息）面部 AI（P=0.046）、An-a（微笑）AI 与 Gn-a（休息）面部 AI（P=0.002）、An-b（微笑）AI 与 Sn-b（休息）面部 AI（P<0.001）、Pog-a（微笑）与 Sn-a（休息）面部 AI（P<0.001）、Nt-a（微笑）与 Sn-a（休息）面部 AI（P<0.001）、Nt-b（微笑）与 Sn-b（休息）面部 AI（P<0.001）、Ph-a（微笑）与 Sn-a（休息）面部 AI（P<0.001）、Ph-b（微笑）与 Sn-b（微笑）面部 AI（P=0.007）、Oc-b AI（差异）与 Gn-b（休息）面部 AI（P=0.031）、Oc-Pog（差异）AI 与 Gn-b（休息）面部 AI（P=0.041）、An-b（差异）AI 与 Sn-b（休息）面部 AI（P<0.001）、Nt-a（差异）与 Sn-a（休息）面部 AI（P=0.006）、Nt-b（差异）与 Sn-b（休息）面部 AI（P<0.001）和 Ph-b（差异）与 Sn-b（休息）面部 AI（P<0.001）之间存在显著相关性。
结论
社交微笑对称性与面部对称性之间存在显著相关性。
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