Effect of the ratio between DCPD and barium glass particles on the fracture toughness (K1c)of experimental composites

• Grant number: 21/09297-2
• Support type: Scholarships in Brazil - Scientific Initiation
• Effective date (Start): October 01, 2021
• Effective date (End): September 30, 2022
• Field of knowledge: Health Sciences - Dentistry - Dental Materials
• Principal researcher: Roberto Ruggiero Braga
• Grantee: Beatriz Fonseca Vela
• Home Institution: Faculdade de Odontologia (FO). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated research grant: 19/04737-4 - Dentin remineralization with the use of composite containing calcium orthophosphate particles associated with a Polymer-Induced Liquid Precursor (PILP): material development, in vitro and randomized clinical studies, AP.TEM

Abstract

This project aims to verify the effect of the addition of dicalcium phosphate dihydrate (DCPD) particles on the fracture toughness (KIc) of experimental composites. Composites will be formulated containing equimolar concentrations of BisGMA and TEGDMA and 40% by volume of particles in different proportions between barium glasses (reinforcement) and DCPD. Bars with central notch will be made and stored in water for 24 h and fractured under flexion (single-edge notched beam method). Fulfilled the requirements of normality and homoscedasticity, the data will be analyzed by two-way analysis of variance and Tukey's test (alpha: 5%).