Evaluation by 3D stereophotogrammetry of facial changes in edentulous patients after rehabilitation

Author(s)

de Lima Toyoshima, Guilherme Hideki ^[1] ; Rezende Pucciarelli, Maria Giulia ^[1] ; Neppelenbroek, Karin Hermana ^[1] ; Sforza, Chiarella ^[2] ; de Menezes, Marcio ^[3] ; Oliveira, Thais Marchini ^[4] ; Soares, Simone ^[1]

Affiliation

^[1] Univ Sao Paulo, Fac Odontol Bauru, Dept Protese & Periodontia, Bauru, SP - Brazil

^[2] Univ Milan, Dept Biomed Sci Hlth, Milan - Italy

^[3] Univ Estado Amazonas, Manaus, Amazonas - Brazil

^[4] Univ Sao Paulo, Fac Odontol Bauru, Dept Odontopediat Ortodontia & Saude Colet, Bauru, SP - Brazil

• Document type: Journal article
• Source: Journal of Applied Oral Science; v. 30, 2022.
• Web of Science Citations: 0

Abstract

To assess facial changes after oral rehabilitation with complete dentures (CDs) by 3D technology allows understanding the results of a treatment that changes facial proportions. Precise outcome parameters can improve decision making. Objective: This descriptive observational research aimed to assess facial changes in completely edentulous patients after oral rehabilitation with a CD by a 3D stereophotogrammetry system. Methodology: 30 edentulous patients (7 men and 23 women), aged 50 to 75, were analyzed with stereophotogrammetry at 28 previously determined anthropometric landmarks, at 2 different times: T1, before treatment, and T2, after inserting the CDs. Images were analyzed with a specific software for linear and angular measurements. The paired t-test was used to compare timestamps (alpha=0.05). Results: Major changes were observed in 7 of the 13 linear measures and 7 of the 9 angular measures. The following linear measurements had an increase: Sn-Gn (lower third of the face), Ls-Li (height of the vermilion lip), and ChL-ChR (mouth width). Sn-Ls (nasal philtrum height) decreased. For angular measurements, Sn-St-Pg (lower facial convexity) angles increased, and the Prn-Sn-Ls (nasolabial angle) and GoR-Pg-GoL (mandible convexity) angles decreased. Conclusions: Major facial changes in newly rehabilitated edentulous patients with CDs included an increase of the lower third of the face, of the vermilion lip, of mouth width, and of the lower facial convexity, and a decrease of the nasolabial angle and mandible convexity. (AU)

• FAPESP's process: 16/14942-6 - 3D longitudinal evaluation of the stability of the dental arches in cleft and non cleft patients before and after orthodontic treatment and prosthetic rehabilitation.
• Grantee: Simone Soares
• Support type: Regular Research Grants