Table 2 from Effect of dental bleaching on the microhardness and surface roughness of sealed composite resins | Semantic Scholar (2024)

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BETA

All four types of dental composites tested showed significant surface roughness differences between the groups subjected to bleaching protocols and those kept as control (p < 0.05).

All bleaching concentrations significantly decreased the micro Hardness of the methacrylate-based composite resin groups, while microhardness was significantly increased in the silorane-based Composite resin groups.

Nanohybrid composite resins previously subjected to 35% hydrogen peroxide gel significantly increased their surface microhardness when subjected to polishing when compared with unpolished nanohybrids composite resin.

Surface sealant can enhance the surface roughness of bulk-fill composite in nonstress bearing area as it reduces the surface micro-hardness.

Home bleaching treatments (20% CP and 35% CP) significantly affected the surface roughness and gloss of VITA ENAMIC while IPS e.max CAD and Celtra Duo CAD were not affected by the differentBleaching treatments.

Hydrogen peroxide showed a greater reduction in microhardness of composites compared to 16% Carbamide peroxide, and Nanofiller 16% and micro hybrid 35%.

35% hydrogen peroxide has the least erosive potential when compared to its association with vinegar and to lemon juice and there was a statistically significant difference among the groups evaluated.

Red wine affected the surface roughness of the aged nanofilled resin submitted to bleaching, and bleaching was unable to reverse the color changes promoted by red wine and coffee on the aged Nanofilled composite.

Bleaching using nanocalcium phosphate particles had the highest hardness results and at the same time improved the remineralization effect on the tooth surface.

Treatment of bleached enamel with Sodium ascorbate and Alpha tocoferol antioxidants has significantly improved the shear bond strength of composite resin to enamel.

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All bleaching concentrations significantly decreased the micro Hardness of the methacrylate-based composite resin groups, while microhardness was significantly increased in the silorane-based Composite resin groups.

It was concluded that bleaching agents can alter the microhardness, roughness and morphology of dental enamel surface.

The in vitro study showed that dental bleaching agents influenced the surface roughness of different restoration materials, and the restoration material itself was shown to have an impact on alteration susceptibility.

The results of this in vitro study suggest that the bleaching agents altered the surface hardness of filled sealant restorative materials, which could possibly lead to increased wear and surface roughness.

The bleaching products used in this study did not adversely affect the microhardness of the restorative materials.

Bleaching agents may affect the surface of existing restorations; therefore, they should not be used indiscriminately when tooth-colored restoratives are present.

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