Polymeric biomaterials maintained the esthetic efficacy and reduced the cytotoxicity of in‐office dental bleaching

• DOI: 10.1111/jerd.12805
• Publication Date: 2021-07-12T08:01:15Z
• Authors: Uxua Ortecho‐Zuta; Carla Caroline de...; Rafael Antonio de...; Maria Luísa Leite; Diana Gabriela So...; Josimeri Hebling; André Luiz Fraga ...; Carlos Alberto de...
• Keywords: Carbamide peroxide; Tooth Whitening

Abstract Evaluate the kinetics of hydrogen peroxide (H 2 O ) degradation, esthetic efficacy and cytotoxicity a bleaching gel with 35%H applied on enamel previously covered or not polymeric nanofibrillar scaffold (SNan), primer catalyst (PPol), both. Standardized enamel/dentin discs (n = 128) obtained from bovine teeth were adapted to pulp chambers. After covering products, was for 45 min, establishing following groups: G1: no treatment (negative control); G2: (positive G3: SNan; G4: PPol; G5: SNan + G6: ; G7: PPol G8: . The H degradation 8), (ΔE/ΔWI; n trans‐amelodentinal cell morphology 4) assessed (ANOVA/Tukey test; p < 0.05). Greater occurred in G7 G8. Bleaching (ΔE) higher G6, G7, G8 comparison G2 ( However, difference observed ΔWI > presented lower level diffusion , oxidative stress, toxicity MDPC‐23 cells Polymeric biomaterials increased decomposition, as well maintained minimized caused by Clinical Significance Application maintains reduces single session in‐office dental bleaching.