Abstract
Objectives The study assessed the impact of facial height on attractiveness of smile, in association with the maxillary gingival display. This research was performed by dental professionals and laypersons. Materials and Methods Frontal extraoral photographs were captured for both short and long faces. The photographs were modified using software for image-processing and three rater groups (orthodontists, dentists, and laypersons) evaluated the smile attractiveness, with 30 subjects in each group. Differences in ratings of the different smiles among the different experimental groups were examined using the Kruskal-Wallis test. The Mann–Whitney U test was performed for pairwise comparisons between the experimental groups. Results Dentists and laypeople were most likely to agree. For the short face, laypeople and dentists both rated the +2 mm gingival display smile as the most attractive smile whilst orthodontists ranked the 0 mm gingival display smile as the most attractive smile. For the long face, laypeople and dentists ranked the 0 mm gingival display smile as the most attractive smile, whilst orthodontists ranked the +2 mm gingival display as the most attractive. Conclusion Smile line of both short and long face subjects was found to influence the smile attractiveness rating by the three rater groups.
Highlights
The interpretation of a smile is indicative of its nature, either pleasure, amusement, or derision
With diverging professional perception of smile attractiveness among the dental experts and the laypeople, the present study aims at quantitatively evaluating the influence of the smile line associated with the maxillary gingival display which was taken into consideration for both the short and long faced patients
In case of continuous variables, the demographic characteristics were presented as means and standard deviations (SD)
Summary
The interpretation of a smile is indicative of its nature, either pleasure, amusement, or derision. Smile is a distinguished facial expression marked by an upward curve of the mouth at corners [1]. It influences the perceived facial attractiveness of an individual and is used as an effective tool for social interaction. Preserving the correctness of a posed smile and ensuring flawlessness are important for a person and should never be ignored in diagnosis and treatment planning. A faultless smile helps maintain healthy relations through expression of friendliness, appreciation, and agreement and conveys compassion and understanding [8]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
