Influence of Upper Lip Curvature on Smile Attractiveness in
Now open: Certificate Course in Management of Covid-19 by Govt. Of Gujarat and PlexusMDKnow more...Now open: Certificate Course in Management of Covid-19 by Govt. Of Gujarat and PlexusMDKnow more...
Gingival display and upper lip curvature shape were combined for evaluation in this study. Downward upper lip curvature shape has a negative impact on perception. There was a positive impact of the upward upper lip in gingival smiles.

There are discrepancies as to whether a gingival smile is attractive or not. The purpose of this study published by the American Journal of Orthodontics and Dentofacial Orthopedics was to quantify the influence of upper lip curvature shape and the amount of gingival display on the perception of smile attractiveness.

A frontal photograph was digitally altered to generate 3 types of upper lip curvature shapes (upward, straight, and downward) with 5 different levels of gingival smile exposure. Fifteen images were generated. Three groups of evaluators assessed the images using a VAS.

The study results showed;

--The downward lip curvature shape had a negative effect on the esthetic evaluation of the smile with gingival exposures of 3 mm or more for all the evaluating groups.

--Laypeople gave higher scores of almost 10 points more than dentists and orthodontists when evaluating the upward lip curvature shape with 5 mm of gingival exposure during a smile.

In conclusion, upward or straight upper lip curvature shapes have a positive impact on perceived smile esthetics. In contrast, downward upper lip curvature shapes have a negative effect on perception when evaluating different degrees of gingival smiles.

Source: https://doi.org/10.1016/j.ajodo.2020.10.022
Like
Comment
Share