Correlation of social smile symmetry with facial symmetry

BMC Oral Health

Research

Hoshyar Abbasi¹  Amin Golshah²  Soraya Seifodini³ 

[1] Department of Oral and Maxillofacial Surgery, School of Dentistry, Kermanshah University of Medical Sciences, Shariati Street, 67139546581, Kermanshah, Iran;Department of Orthodontic, School of Dentistry, Kermanshah University of Medical Sciences, Shariati Street, 67139546581, Kermanshah, Iran;School of Dentistry, Kermanshah University of Medical Sciences, Shariati Street, 67139546581, Kermanshah, Iran;

关键词: Smiling;    Facial Asymmetry;    Orthodontics;   

DOI  :  10.1186/s12903-023-03260-z

 received in 2022-10-23, accepted in 2023-07-28,  发布年份 2023

来源: Springer

【 摘 要 】

BackgroundThis study aimed to assess the correlation of social smile symmetry with facial symmetry.MethodsIn 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.ResultsSignificant 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).ConclusionsA significant correlation exists between social smile symmetry and facial symmetry.

【 授权许可】

CC BY   
© BioMed Central Ltd., part of Springer Nature 2023

【 图 表 】

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