In Vitro Evaluation of Mechanical Properties of Cention N and Its Comparison with Resin Modified Glass Ionomer Cement (RMGIC) Restorative Material as Used in Primary Teeth

Abstract

Methods: 22 specimens prepared with Cention and RMGIC were embedded in primary teeth mounted in acrylic for analysing shear bond strength. Shear bond strength was analysed using a universal testing machine. The modes of failure in samples were observed under a stereomicroscope and scanning electron microscope. 22 customised samples of Cention N and RMGIC were prepared and categorised as group A and group B, respectively. The flexural and compressive strengths of these samples were evaluated using a universal testing machine.

Results: The shear bond strength of RMGIC was higher than that of Cention N, whereas the compressive and flexural strengths of Cention N were significantly higher than those of RMGIC. The modes of failure were predominantly adhesive followed by mixed failures.

Conclusion: The results of this study suggest that Cention N demonstrated superior mechanical properties compared with RMGIC and can therefore be recommended for restorations in primary posterior teeth. Cention N being a smart, esthetic, self-cured, or dual-cured material with better mechanical properties offers a wide range of applicability in primary teeth.

Figure 1

Box plot showing the comparison of shear bond strength of groups A and B expressed in MPa performed using the Mann–Whitney-U test. ^∗P < 0.05 is statistically significant. The difference in shear bond strength attained between the two groups was statistically significant (p < 0.0008), where group B shows higher shear bond strength than group A (18.89 > 7.89).

Figure 2

Box plot showing comparison of flexural strength of groups A and B expressed in MPa performed using the Mann–Whitney-U test showed a statistically significant difference (p < 0.05), where group A shows higher flexural strength than group B (152.11 > 90.69).

Figure 3

Box plot showing comparison of compressive strength of groups A and B expressed in MPa performed using the Mann–Whitney-U test showed a statistically significant difference (p < 0.05), where group A shows higher compressive strength than group B (180.84 > 90.96).