Banca de QUALIFICAÇÃO: CECÍLIA SANTOS GALVÃO

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : CECÍLIA SANTOS GALVÃO
DATE: 22/04/2024
TIME: 10:30
LOCAL: Departamento de Odontologia - Sala de aula do setor de prótese
TITLE:

ACCURACY AND RELIABILITY OF DIFFERENT SCANBODY MODELS FOR FIXED IMPLANT-SUPPORTED PROSTHESES IN MAXILLA: AN IN VITRO AND IN VIVO STUDY

KEY WORDS:

Accuracy; Digital impressions; digital scans; intraoral scanners; Implant position; Scan Pattern

PAGES: 50
BIG AREA: Ciências da Saúde
AREA: Odontologia
SUMMARY:

The advancement of digital technology has improved the rehabilitation of edentulous patients, providing greater comfort during treatment. In implant-supported fixed prostheses, transferring the correct position of the dental implants is a determining step for the success of the treatment. New digital resources are being improved so that they can be increasingly used. In this context, the objective of the present study is to elucidate the accuracy and reliability of intra-oral scanning in transferring the position of multiple implants in the maxilla using different scanbody models. The research will be divided into two stages, the first being an in vitro study using three typodont models in methacrylate resin of an edentulous maxilla with 6 morse cone implants, differing in the implant installation depth (0mm, 2mm, 4mm). Mini-abutments will be installed on the implants with varying angulations of 0, 15 and 30 degrees. Finally, 4 different types of scanbody will be installed on the mini-pillars, differing in material, geometry and height. The scanning (N = 72) must be repeated 18 times for each group (G1: Peek Resin; G2: Titanium; G3: Titanium-peek; G4: PMMA Resin). For each group, 6 scans will be taken (N = 18) with different splinting strategies for the transfers, namely: without splinting (n=6), semi-rigid splinting (n=6) and rigid splinting (n=6). The second stage will be a clinical trial in which patients with 6 to 8 implants in the maxilla will be recruited to perform intraoral scanning with the purpose of transferring the three-dimensional position of the implants using two devices: CicabodyÒ (CI Group) and scanbody mini pillar ( SingularÒ Implants) (SB Group). For each patient, three scans will be performed: without splinting (SE), semi-rigid splinting (ES) and rigid splinting (ER). The control group will be represented by the index resulting from conventional molding, which should be used as a reference model for accuracy and reliability analyses. The analyzes will be carried out using the Geomagic XÒ software using image overlay to measure accuracy and marginal adaptation. Statistical tests must be conducted with a 95% confidence level. At the end of the study, we hope to answer whether the material, geometry, height and splinting of the scanbodies have an influence on the reproduction of the location of dental implants for rehabilitation of multiple implant-supported prostheses through intra-oral scanning.

 

 

 

 

 

COMMITTEE MEMBERS:
Interna - 1459400 - ADRIANA DA FONTE PORTO CARREIRO
Interno - 1031499 - LAERCIO ALMEIDA DE MELO
Externa ao Programa - 2492886 - SAMIRA ALBUQUERQUE DE SOUSA - UFRN