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Article Type

Original Article

Section/Category

Restorative Dentistry

Abstract

Objectives

The study aimed to assess and compare micro-shear bond strength (µSBS) to dentin, micromorphological and chemical changes of newly introduced bioactive restorative materials/dentin interfaces.

Materials and methods

Total of 56 molars were used in this study, for μSBS, 28 molars (n=28) were randomly assigned into 4 groups (n=7) according to the type of restorative material used: group A; Activa, Pulpdent, group B; Beautifil II LS, Shofu, group C; Cention N, Ivoclar Vivadent and group D; Surefil one, Dentsply Sirona. The other 28 molars (n=28) were tested for elemental analysis of restoration/tooth interface using EDX and micromorphological analysis under SEM, and assigned into 4 groups (n=7) same as μSBS. One-way ANOVA followed by Tukey post-hoc test.

Results

One-way ANOVA analysis of the µSBST showed that there is a statistically significant difference between the tested restorations (P < 0.005), Activa showed the greatest bond strength 19.37±2.12 MPa, whereas Cention N showed the lowest bond strength 5.01±0.71 MPa. EDX analysis results showed that there is a statistically significant difference between the tested restorations (P < 0.001). The Ca/P ratio in the case of Cention N had the highest ratio with (2.27), followed by Surefil one, followed by Beautifil II LS (1.93), and the lowest ratio was found in Activa with (1.36).

Conclusions

This study concluded that Activa showed the highest μSBS. While Centio N outperformed the other studied restorative materials in terms of their remineralization abilities.

Keywords

active, bioactive restorative material, cention N, microshear bond strength

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