The effect of resin infiltrant (Icons), MI paste plus and Nd:YAG laser on enamel microhardness
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Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
Background and Aims

Erosion is the chemical dissolution of a tooth by acid without bacterial involvement. The purpose of the current study was to investigate the effect of resin infiltration (Icons), MI paste plus, and Nd:YAG laser on the enamel microhardness.

Materials and Methods

40 enamel samples were obtained from the third molar tooth. Primary microhardness was measured in all specimens. Then, erosion was created using hydrochloride acid on the surfaces of enamel and the microhardness values were measured. The samples were randomly divided into four groups. G1: MI paste plus, G2: MI paste plus+ Nd:YA laser, G3: ICON without etching, G4: ICON with etching. Erosion was induced again by hydrochloric acid and then subjected to thermocycling. Finally, the microhardness of the samples was measured. Statistical analysis was performed using SPSS23 software, one-way ANOVA, multiple Tukey and T-test comparisons. P<0.05 was considered as a significant level.

Results

The microhardness increased in the third stage compared to the second stage in all groups, which was statistically significant (P<0.000). Also, the comparison of the increase of microhardness among groups, except second group with the fourth group, was statistically significant.

Conclusion

All the materials used in this study significantly increased the microhardness of the eroded enamel.

Language:
Persian
Published:
Journal of Dental Medicine, Volume:33 Issue: 1, 2020
Pages:
9 to 16
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