Aesthetic Preference in the Transverse Orientation of the Occlusal Plane in Rehabilitation: Perspective of Laypeople and Dentists

Ana Lidia Carvalho, Liliana Gavinha Costa, Joana Meneses Martins, Maria Conceição Manso, Sandra Gavinha, Mariano Herrero-Climent, Blanca Ríos-Carrasco, Carlos Falcão and Paulo Ribeiro
Additional contact information
Ana Lidia Carvalho: FP-I3ID, FCS, Universidade Fernando Pessoa, 4249-004 Porto, Portugal
Liliana Gavinha Costa: FP-I3ID, FCS, Universidade Fernando Pessoa, 4249-004 Porto, Portugal
Joana Meneses Martins: FP-I3ID, FCS, Universidade Fernando Pessoa, 4249-004 Porto, Portugal
Maria Conceição Manso: FP-I3ID, FCS, Universidade Fernando Pessoa, 4249-004 Porto, Portugal
Sandra Gavinha: FP-I3ID, FCS, Universidade Fernando Pessoa, 4249-004 Porto, Portugal
Mariano Herrero-Climent: Porto Dental Institute, 4150-518 Porto, Portugal
Blanca Ríos-Carrasco: Department of Periodontology, Universidad de Sevilla, 41009 Seville, Spain
Carlos Falcão: FP-I3ID, FCS, Universidade Fernando Pessoa, 4249-004 Porto, Portugal
Paulo Ribeiro: FP-I3ID, FCS, Universidade Fernando Pessoa, 4249-004 Porto, Portugal

IJERPH, 2021, vol. 18, issue 22, 1-13

Abstract: The present study had a convenience sample with 236 laypeople and 242 dentists who completed an online questionnaire to choose the most attractive image among six pairs for comparison. Control image: symmetric (parallelism between occlusal plane (OP), commissural line (CL), and interpupillary line (IL)). Change of Control, obtaining three images with a 3-degree inclination of the labial commissures. Image A: OP parallel to IL; Image B: OP parallel to CL; Image C: OP at 1.5 degree mean angulation between IL and CL. Non-parametric comparison (IBM© SPSS Statistics vs. 27.0, p < 0.05). The “Dentists” group’s decreasing order of preference (attractiveness) of the images is: Control > A > C > B ( p < 0.05). In the “Lay” group, it is: Control > A > (C not ≠ B). Dentists significantly prefer more the Control and Image A than laypeople ( p < 0.001). Sex (single exception in laypeople), age, and dentist’s area of activity did not interfere in the perception of attractiveness. Dentists and laypeople preferred the Control when compared to images with CL canted. In the existence of CL inclination, the preference of the groups was the IL as a reference for OP orientation, with the mean angulation or coincident with the CL being considered less aesthetic.

Keywords: prosthodontics; dental esthetics; occlusal plane canting; commissural lines; interpupillary line; facial asymmetry; laypeople; dentists (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
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