ANNALS OF MEDICAL SCIENCES, vol.10, pp.1073-1076, 2022 (Peer-Reviewed Journal)
Aim: The purpose of this study is to assess the flexural strength of heat-cure acrylic
resins repaired with auto-polymerized acrylic resins modified with 1%, 3% TiO2, Fe2O3,
Materials and Methods: Fifty-six samples (65x10x2.5 mm) were prepared with heatcure acrylic resins and divided into 7 groups (8 samples each) to make repair procedure:
Specimens were repaired with unmodified (control group) and 1%, 3% TiO2, Fe2O3, CuO
added auto-polymerized acrylic resins. For 3-point flexural test, the force was loaded at
5 mm/min crosshead speed directly to the middle part of the repaired acrylic resin with
a Universal Testing Machine. Data were analyzed statistically by ANOVA followed by
Tukey test (p < 0.05).
Results: Control group showed lower strength values than the other groups. 1% TiO2
nanoparticle added group showed significantly higher flexural strength values than 3%
added groups and control group (p < 0.05). The highest strength value was measured in
1% TiO2 group.
Conclusion: Acrylic resins reinforced with 1% TiO2 developed higher strength than
resins reinforced with 3 % TiO2, Fe2O3, CuO nanoparticles. Adding 1% nanoparticles to
resins could improve the fracture strength of materials.