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  Acrylic resin is still the most commonly used denture base material due to its ideal properties. However, acrylic resin denture fractures are still considered a major unsolved problem thus the addition of nanoparticles as filler was performed to increase its mechanical properties. The purpose of this study was to discovered the effect of nanoparticles TiO 2 on the flexural strength of acrylic resin denture plate.  Method:  This study used 27 heat-cured acrylic resin specimens sized 65 x 10 x 2.5 mm. The samples were divided into three concentration groups (n = 9), the control group; 1% of nanoparticles TiO 2 ; and 3% of nanoparticles TiO 2 . The flexural strength was tested using the Universal Testing Machine. All data were analysed using the one-way ANOVA test with 95% confidence level then continued with the Least Significant Difference (LSD) test.  Results:  There were significant flexural strength differences in different concentration of nanoparticles TiO 2 . The highest flexural strength value was found in the 1% of nanoparticles TiO 2  group (106.99 ± 6.09 MPa), whilst the lowest flexural strength value was found in the 3% of nanoparticles TiO 2  group (91.64 ± 5.38 MPa). Significant flexural strength difference was found between the control group and the 1% of nanoparticles TiO 2  group, and also between the 1% of nanoparticles TiO 2  group with the 3% of nanoparticles TiO 2  group (p < 0.05).  Conclusion:  From this study can be concluded that concentration of 1% of nanoparticles TiO 2  was able to increase the flexural strength of acrylic resin denture plate.

The effect of nanoparticles TiO2 on the flexural strength of acrylic resin denture plate