Temporomandibular joint: Function and dysfunction
1980; Elsevier BV; Volume: 77; Issue: 2 Linguagem: Inglês
10.1016/0002-9416(80)90014-7
ISSN1557-8488
Autores Tópico(s)Facial Nerve Paralysis Treatment and Research
ResumoNumerous studies of smile esthetics have used still photos. Photos, however, do not capture the dynamics of a smile, an element that can contribute to overall smile esthetics. In this study, we assessed the esthetics of dynamic smiles.Four facially balanced female dental students were trained to produce 8 distinct smiles using the facial action coding system. Videos of the models’ whole faces were presented to 2 panels of raters: dental students and nondental undergraduate students. Smile attractiveness was rated using a Web-based survey.The smile that used 4 labial muscles was rated significantly better than the smile involving only the risorius muscle (P <0.05). The orbicularis oculi improved smile attractiveness (P <0.04), especially among smiles rated less favorably (P 0.05), perhaps because orbicularis oculi activation altered activations in other muscles in such a way that smile attractiveness was increased in the lower face.Smile esthetics increased with increased recruitment of muscles involved in smile production. The results were robust across the models, suggesting that objective rating methods of smile-dynamic esthetics could become an important clinical tool.
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