Comparative Evaluation of Compressive Strength and Flexural Strength of Innovative Nanozirconia and Nanodiamond Filled Novel Resin Cement

Self-adhesive dual-cure resin cements (DCRC) simplified clinical application to a single-step procedure. Studies reported inferior mechanical properties compared to conventional resin cements. This study evaluated and compared the compressive strength (CS) and flexural strength (FS) of commercial DCRC against its modification using 10 vol% nanozirconia and 10 vol% nanodiamond. Three groups were prepared: Group 1 (commercial resin cement), Group 2 (nanozirconia-modified), and Group 3 (nanodiamond-modified), with 10 samples per group. 3-(Trimethoxysilyl) propyl methacrylate was used as coupling agent. Specimens were prepared according to manufacturer instructions and tested for CS and FS using a Universal Instron testing machine. Data was analysed using one-way ANOVA and Tukey’s post hoc test. Compressive strength values were Group 2 = 132.18 ± 27.93 MPa, Group 3 = 126.21 ± 12.54 MPa, Group 1 = 121.12 ± 19.35 MPa. Flexural strength values were Group 2 = 72.5 ± 10.4 MPa, Group 3 = 71.06 ± 6.3 MPa, Group 1 = 66.92 ± 5.27 MPa. Both nanozirconia and nanodiamond incorporation showed improvements in CS and FS compared to the control group. Within the limitations of this study, nanozirconia modified dual cure resin cement showed higher values compared to nanodiamond modified dual cure resin. These results support further research to optimize nanofiller-reinforced luting cements.