Banca de DEFESA: BRUNA KATHERINE GUIMARÃES CARVALHO

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : BRUNA KATHERINE GUIMARÃES CARVALHO
DATE: 28/09/2022
TIME: 13:30
LOCAL: REMOTA
TITLE:

STABILIZING SPLINTS MANUFACTURED BY DIGITALMETHOD: IN VITRO MICROBIOLOGICAL TEST AND FRACTURE RESISTANCE

KEY WORDS:

Stabilizing splints; CAD/CAM; Fracture resistance; Microbiological adhesion.

 

 

PAGES: 67
BIG AREA: Ciências da Saúde
AREA: Odontologia
SUBÁREA: Clínica Odontológica
SUMMARY:

CAD/CAM technology allowed the stabilizing splints manufacture, however there are gaps about these devices' behavior in face of mechanical and biological variables that are still unknown. Thus, the objective of this project was to verify if the resins used in digital technology of milled and printed stabilizer splints can influence fracture resistance and microorganism adhesion, in relation to the resin applied in manufacture of conventional thermopolymerizable splints. The method included mechanical and microbiological steps, each one composed by Conventional (CG) (n=30), Milled (MG) (n=30) and Printed (PG) (n=30) groups, according to the method of preparation, each one having three subgroups (n=10) that varied the specimen thickness from 1 to 3 mm. In the mechanical step, the samples, in the form of 65 mm bars, were tested for fracture resistance in a universal testing machine, with load cell of 500 kgf and speed of 1 mm/min; in the microbiological step, the shape was in form of 15 mm diameter discs, subjected to micro-organism adhesion to the surface with exposure to Streptococcus mutans and kept for 24 hours at 35 °C in oven for successive CFU counting. Data were stored in SPSS 22.0 and statistical analysis used ANOVA and Tukey's post hoc. In the results of mechanical step ANOVA had identified statistically significant differences between the groups (p≤0,005), showing CG and MG had presented better results. Tukey´s post hoc had considered statistically significant difference between MG and PG (p=0,031), listing MG as superior. For the microbiological step, they did not show statistical differences between the groups (p>0.005) in any analysis. It was observed milled resins described superior results and/or close to the conventional technique one, for fracture resistance; and printed resins are superior in terms of microorganisms’ surface adhesion.

 

 

 

COMMITTEE MEMBERS:
Presidente - 2946627 - ERIKA OLIVEIRA DE ALMEIDA
Interno - 1466265 - GUSTAVO AUGUSTO SEABRA BARBOSA
Externa à Instituição - SHEILA RODRIGUES SOUSA PORTA - UFU
Externo à Instituição - ANDRE ULISSES DANTAS BATISTA - UFPB
Externo à Instituição - Paulo Cézar Simamoto Júnior - UFU