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EFFECT OF ADDING TIO2 NANOPARTICLES ON THE MECHANICAL PROPERTIES OF HEAT CURED ACRYLIC RESIN BEFORE AND AFTER THERMOCYCLING

Research Authors
Bayiumy Ali Sayed, and Elsokkary Mohammad Mahmoud
Research Abstract

ABSTRACT

Objective:

The aim of this study was to evaluate the effect of different concentrations of titanium dioxide nanoparticles on the mechanical properties of heat polymerized acrylic resin before and after thermocycling. The tested parameters were flexural strength and hardness.

Material and Methods: 120 specimens were prepared according to the specific dimension for each test (flexural strength and micro hardness) and distributed into: - Before thermocycling (control, (TiO2) nanoparticles with concentration (0.1% and 0.2%). - After thermocycling (control, (TiO2) nanoparticles with concentration (0.1% and 0.2%). Thermal cycles were performed in a thermocycling machine consisted of 5000 cycles at 5°C and 55°C. Results: Flexural strength and micro hardness were tested for both groups. The data was collected and statistically analyzed. Both Flexural strength and micro hardness were decreased by adding TiO2 nano particles concentrations.

Conclusion: adding (TiO2) nanoparticles to methyl methacrylate adversely affects the flexural strength and micro hardness before and after thermocycling.

Research Date
Research Department
Research Member
Research Publisher
EGYPTIAN DENTAL JOURNAL
Research Rank
Local
Research Vol
69
Research Website
https://edj.journals.ekb.eg/article_282947.html?fbclid=IwAR0m0DSGNRxnCgt8g0lD5a4s_etaMD5OH9q00qoOZRUDRCp-HYCnMicHPVA
Research Year
2023
Research Pages
675:681