Canting of the occlusal plane: Perceptions of dental professionals and laypersons

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Abstract

Objectives: To determine if canting of the occlusal plane influences esthetic evaluation of the smile among orthodontists, dentists and laypersons. Study Design: A frontal photo of a smile with 0° occlusal plane canting in relation to the bipupillary plane was modified using Adobe Photoshop C3 (Adobe Systems Inc, San José, California) to generate two images with occlusal plane inclinations of 2° and 4°. The three images were evaluated esthetically by orthodontists (n=40) general dentists (n=40) and laypersons (n=40). Each image was awarded a score as follows: 1=esthetically acceptable; 2=moderately acceptable; 3=esthetically unacceptable. Evaluators also placed the three images in order in preference. Data were analyzed using the Kruskal-Wallis (p<0.05) and the Mann-Whitney tests, applying the Bonferroni Correction (p<0.016). Results: No significant differences (p> 0.05) were found between the three groups for 0° and 2° cants (median for orthodontists=1; general dentists=1; laypersons=1). Orthodontists (median score=3) made evaluations of the image with 4° occlusal plane that were significantly different from general dentists (median=2) and laypersons (median=2). All three groups put the 0° image in first place in order of esthetic acceptability, the 2° image in second place and the 4° image in third place. Orthodontists placed the 0° image in first place with significantly greater frequency (p<0.016) than laypersons. Conclusions: Occlusal plane canting of 0° and 2° were evaluated as esthetically acceptable by the three groups. The 4° occlusal plane cant was evaluated more negatively by orthodontists than by general dentists and laypersons. All three groups placed the 0° image in first place of esthetic acceptability, 2° in second place and 4° in third. Orthodontists put the 0° image in first place with significantly greater frequency than laypersons.

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APA

Olivares, A., Vicente, A., Jacobo, C., Molina, S. M., Rodríguez, A., & Bravo, L. A. (2013). Canting of the occlusal plane: Perceptions of dental professionals and laypersons. Medicina Oral, Patologia Oral y Cirugia Bucal, 18(3). https://doi.org/10.4317/medoral.18335

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