Perceptibility and Acceptability of Tooth and Gingival Shade Modifications in Digital Smile Images: A Comparative Study Among Laypeople, General Dentists, and Specialists
Nikola Petričević, Natalija Prica, Asja Čelebić, Sanja Peršić-Kiršić

TL;DR
This study compares how laypeople and dental professionals perceive changes in tooth and gum color in digital smile images.
Contribution
The study identifies perceptibility and acceptability thresholds for tooth and gingival shade changes among different evaluator groups.
Findings
Specialists detected color changes earlier and found them unacceptable sooner than laypeople.
Laypeople noticed changes later but judged them as unacceptable more quickly for lighter shades.
Laypeople prioritize brighter teeth, while specialists prefer a natural appearance.
Abstract
Background: This study aimed to evaluate the agreement among different evaluators in assessing smile esthetics from frontal-view photographs of the lower third of the face during smiling, and afterwards to determine thresholds of perceptibility and acceptability of tooth and gingival shade changes on a single modified digital photograph. Methods: Sixty photographs of the lower third of the face of individuals with pleasing smiles were obtained. Evaluator groups included laypeople, general dentists, and specialists in periodontology, orthodontics, and prosthodontics. Esthetic assessment was performed using seven items from the Orofacial Esthetic Scale (OES). One photograph was digitally manipulated by altering the shade of the first maxillary incisor and the gingiva of the right maxillary second incisor. Perceptibility thresholds and acceptability of these modifications were assessed by…
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Taxonomy
TopicsOrthodontics and Dentofacial Orthopedics · Dental Erosion and Treatment · Dental materials and restorations
