3D analysis of smiling function in healthy people: Influence of sex and age

Gibelli, Daniele; Tarabbia, Filippo; Restelli, S.; Orabona, Giovanni Dell’Aversana; Dolci, Claudia; Califano, Luigi; Biglioli, Federico; Sforza, Chiarella

doi:10.1016/j.bjps.2019.05.036

Cited by 3 publications

(1 citation statement)

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“…Our sample population exhibited significant sexual dimorphism in smile dimensions, with males presenting wider smiles and faces than females. This is in agreement with previous studies that have explored smile dimensions using three-dimensional data [34][35][36][37] . However, it can be attributed to males exhibiting overall larger facial dimensions, since in our sample females had higher proportional smile widths.…”

Section: Discussionsupporting

confidence: 93%

Smile dimensions affect self-perceived smile attractiveness

Horn

Matuszewska

Gkantidis

et al. 2021

Sci Rep

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Facial expressions play a leading role in human interactions because they provide signaling information of emotion and create social perceptions of an individuals’ physical and personality traits. Smiling increases socially perceived attractiveness and is considered a signal of trustworthiness and intelligence. Despite the ample information regarding the social importance of an attractive smile, little is known about the association between smile characteristics and self-assessed smile attractiveness. Here we investigate the effect of smile dimensions on ratings of self-perceived smile attractiveness, in a group of 613 young adults using 3D facial imaging. We show a significant effect of proportional smile width (ratio of smile width to facial width) on self-perceived smile attractiveness. In fact, for every 10% increase in proportional smile width, self-perceived attractiveness ratings increased by 10.26%. In the present sample, this association was primarily evident in females. Our results indicate that objective characteristics of the smile influence self-perception of smile attractiveness. The increased strength of the effect in females provides support to the notion that females are overall more aware of their smile and the impact it has on their public image.

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Section: Discussionsupporting

confidence: 93%