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PERCEPTION OF THE SMILE ON PEOPLE WITH AND WITHOUT KNOWLEDGE IN ORTHODONTICS

Objective: to assess the perception of the smile from the perspective of orthodontists and people without knowledge in orthodontics. Methods: a cross-sectional study was carried out. Two hundred and seven questionnaires about knowledge and perception of the smile were completed by 43 orthodontists and students of the Especializacion en Ortodoncia at the Universidad Santo Tomas (group 1) and 164 people with no knowledge in orthodontics (group 2). The dependent variables were the perception of alterations in the midline and the buccal corridor; the explanatory variables were age, sex and socioeconomic status. The information was described by means and standard deviations, frequencies and percentages depending on the nature of the variables. Chi-square test was applied and a p value <0.05 was considered statistically significant. Results: the midline deviation of 1 mm and centered were chosen for men and women as the most pleased the two study groups. In determining the least pleasant smile, the groups agreed that the least pleasant smile was when it presented the largest deviation (4 mm). Association between knowledge and perception of the deviation from the mean line in 2 mm (p=0.044) and 4 mm (p=0.000) was found. Smiles with a large buccal corridor, medium and large were perceived as less pleasant for both sexes, all women assessed as less pleasant broad buccal corridor. Conclusion: a statistically significant difference was not present in the perception of the characteristics of the smile between people with and without knowledge of orthodontics.