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International Journal of Esthetic Dentistry  (English Edition)
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Int J Esthet Dent 15 (2020), No. 2     29. May 2020
Int J Esthet Dent 15 (2020), No. 2  (29.05.2020)

Page 174-183, PubMed:32467946


Evaluation of the effect of tooth size on smile attractiveness fromthe perspective of art students, dental students, and laypeople in Sanandaj, Iran, 2017
Bahramnia, Fatemeh / Kookhi, Nazieh Abdollah / Zandieh, Zahra
Introduction: An attractive smile helps people to feel more self-confident and look younger and more attractive. Smile evaluation and smile design are therefore important aspects of restorative and orthodontic diagnosis and treatment planning.
Aim: The purpose of this study was to determine the influence of tooth size on smile attractiveness.
Materials and methods: The study was conducted in 2017 in Sanandaj, Iran. The participants were selected by convenience sampling among 50 dental students, 50 art students, and 50 laypeople. A color photograph of a posed smile was chosen from the internet. The maxillary anterior dentition was digitally altered to produce different tooth sizes with width-to-height ratios of 65%, 70%, 75% (original photograph), 80%, 85%, and 90%. Six images of each subject were paired into 16 possible combinations and presented to three groups (dental students, art students, and laypeople). The Wilcoxon signed-rank test was used for data analysis.
Results: Statistical analysis showed that the width-to-height ratios of 65% and 70% for the maxillary anterior teeth was considered least attractive by the participants in all three groups.
Conclusion: Minimal tooth size should be taken into account during restorative treatment planning, and excessive tooth proportions should be considered esthetically problematic.