Introduction: The aim of this study was to compare the criteria of a beautiful smile from the point of view of adults and the point of view of dental science.
Methods: The research method is cross-sectional and descriptive-analytical. The statistical population of the study included all the patients of Shahid University School of Dentistry, Shahid Montazeri Clinic of Shahid University School of Dentistry and private dental office (restorative specialist, orthodontic specialist and general dentist) who were selected by simple random sampling in each group of 65 people. A self-made paper and online questionnaire containing two parts of demographic information and smile pictures, each of which did not have one of the beauty criteria of a smile, was provided to the subjects. The results were analyzed by the chi square test and if the assumptions were not met, by the fissure exact test.
Results: According to the obtained results, the highest percentage of satisfaction was related to midline deviation and the lowest level of satisfaction was related to the amount of dental display. The majority of people in the society were satisfied with the ideal smile. The presence of diastema and small teeth caused dissatisfaction in women
Conclusion: According to the results of the research, it can be said that comparison can be a good criterion for recognizing a beautiful and ideal smile in people who should; However, in order to increase the external validity of the research, it is recommended to conduct more research in this direction.