Banca de QUALIFICAÇÃO: LUISA MADEIRA LEMOS

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : LUISA MADEIRA LEMOS
DATE: 18/06/2024
TIME: 10:30
LOCAL: Departamento de Odontologia - sala de aula do setor de prótese
TITLE:

IMPACT OF NEW COMPLETE DENTURE REHABILITATION ON THE FACIAL PARAMETERS OF EDENTULOUS PATIENTS: A 3D STEREOPHOTOGRAMMETRY STUDY

KEY WORDS:

 Complete Denture; Aesthetics; Soft Tissues; Stereophotogrammetry.

PAGES: 43
BIG AREA: Ciências da Saúde
AREA: Odontologia
SUMMARY:

Conventional complete dentures (CCDs) are the most commonly used treatment for the rehabilitation of edentulous patients, aiming to restore not only functional aspects but also aesthetics. Soft tissues have a fundamental role in facial aesthetics and harmony; thus, quantifying their variations is crucial for evaluating the outcomes of therapeutic interventions. 

This study aimed to evaluate changes in facial and soft tissue parameters in completely edentulous patients before and after rehabilitation with new complete dentures using three-dimensional stereophotogrammetric facial images over a one-year follow-up period. In this clinical trial, a total of 34 edentulous patients were rehabilitated with new complete dentures. Calibrated and stereoscopic facial images were captured without dentures and with previous and new dentures using a LifeViz Mini passive stereoscopic digital camera. The images were then analyzed using Quantificare 3D Viewer software at the time of denture installation. Patient perception of their facial appearance before and after the installation of new dentures was measured using an adapted OES questionnaire. The patient who previously used complete denture was asked if they were interested in undergoing facial harmonization to improve facial appearance under the conditions of using previous dentures (PA) and new dentures (PN). Data normality was determined using the Shapiro-Wilk test. Paired T-tests were applied for linear and angular evaluations of facial parameters, and patient perception of facial appearance was analyzed using the Wilcoxon test. Statistical tests were conducted considering a significance level of 5% and a test power of 80%. The mean age of the study patients was 65.62±8.38 years, and the mean duration of edentulism in the maxilla and mandible was 29.26±14.05 years and 28.21±14.94 years, respectively. Results for facial parameters between SP-PA showed significant differences in 7 out of 13 linear measurements, while comparisons between PA-PN and SP-PN revealed 10 and 11 changes in the facial lengths of the middle and lower thirds of the face, respectively. The absence of dentures resulted in a significant retraction of the upper (Ls-(Prn-Pg)) and lower (Li-(Prn-Pg)) lip projection relative to the facial profile, contributing to the collapse of the middle and lower thirds of the face (p<0.001). For angular measurements, rehabilitation with new dentures significantly improved facial parameters compared to the edentulous condition and previous denture, contributing to an increase in the convexity of the patient's facial profile [G-Sn-Pg, p<0.05)]. Patient perception of facial appearance was satisfactory with the use of dentures compared to the edentulous status, and these results were more pronounced after rehabilitation with new dentures (p<0.001). The majority of patients (PA=58.3%) expressed interest in undergoing facial harmonization. However, after rehabilitation with new prostheses, this interest decreased to 41.7% (N=10). It is expected that the improvements in facial and soft tissue parameters found after rehabilitation with new dentures will be maintained after one year of follow-up, contributing to a harmonious appearance and improvement of facial aesthetics. The results of this study may guide professionals in planning complete denture rehabilitation, ensuring the restoration of masticatory function, facial aesthetics, and self-esteem.

 

 

COMMITTEE MEMBERS:
Presidente - 1459400 - ADRIANA DA FONTE PORTO CARREIRO
Externo ao Programa - 1466265 - GUSTAVO AUGUSTO SEABRA BARBOSA - UFRNExterno ao Programa - 1031499 - LAERCIO ALMEIDA DE MELO - UFRN