Bahramnia Fatemeh, Kookhi Nazieh Abdollah, Zandieh Zahra
Postgraduate Student of Prosthodontics, Department of Prosthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
Int J Esthet Dent. 2020;15(2):174-183.
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.
The purpose of this study was to determine the influence of tooth size on smile attractiveness.
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.
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.
Minimal tooth size should be taken into account during restorative treatment planning, and excessive tooth proportions should be considered esthetically problematic.
