Smile aesthetics significantly impacted by posterior smile line and most posterior teeth displayed
According to a new study Smile aesthetics is significantly impacted by posterior smile line and most posterior teeth displayed. Further Maxillary posterior gingiva and teeth displayed influence smile attractiveness as evaluated by laypersons.
The study has been published in the International Dental Journal.
A harmonious smile plays an undeniable role in facial attractiveness, which exerts an important influence on personal self-esteem and social activities. Even tiny imperfections in dental and gingival aesthetics may compromise the whole smile attractiveness, thus adversely affecting facial appearance and related psychological behaviour. An aesthetic smile is a harmonious entity formed by fundamental components including teeth, gingiva, lips, and spaces.
The aim of this research was to establish standard norms for posterior smile-related characteristics including posterior smile line (PSL), the most posterior teeth displayed, buccal corridor ratio (BCR), and buccal corridor symmetry (BCS) and investigate its aesthetic contributions to smile attractiveness in a Chinese population.
From digitally recorded dynamic smile videos of young Chinese participants, 188 standardised full-smile images were captured and then aesthetically evaluated by 22 laypersons using a visual analog scale (VAS). Four smile-related variables in the posterior region were analysed. VAS data were compared between subgroups to test the influence of these variables on smile aesthetics with significance level of P < .05.
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