六偏磷酸钠
化学
过氧化氢
搪瓷漆
氟化钠
核化学
过硼酸钠
氟化物
脱盐
过氧化脲
牙科
钠
无机化学
生物化学
有机化学
医学
作者
Nilson Antônio Nunes Júnior,Gabriel Pereira Nunes,Amanda Scarpin Gruba,Marcelle Danelon,Lívia Maria Alves Valentim da Silva,Gabriella de Farias Batista,André Luiz Fraga Briso,Alberto Carlos Botazzo Delbem
标识
DOI:10.1007/s00784-022-04480-3
摘要
ObjectiveThis study evaluated in vitro the effects of calcium gluconate (CaGlu), sodium fluoride (NaF), sodium hexametaphosphate (HMP), and NaF/TMP added to a 35% hydrogen peroxide (H2O2) bleaching gel on the color change, enamel hardness, and trans-amelodentinal diffusion.Materials and methodsEnamel discs/bovine dentin (n = 150) were divided according to the bleaching gel: 35% H2O2 (H2O2); 35% H2O2 + 0.1% NaF (H2O2/NaF); 35% H2O2 + 1% HMP (H2O2/HMP); 35% H2O2 + 0.1% NaF + 1% HMP (H2O2/NaF/HMP), and 35% H2O2 + 2% CaGlu (H2O2/Caglu). The bleaching gels were applied three times (40 min/session) at 7-day intervals between each application. Then, color alteration (ΔE), whitening index (ΔWID), percentage of surface hardness loss (% SH), cross-sectional hardness (ΔKHN), and trans-amelodentinal diffusion were determined. Data were submitted for analysis of variance (ANOVA), followed by the Student–Newman–Keuls test (p < 0.05).ResultsAll bleaching gels showed significant color changes after treatment (p < 0.001). ΔE and ΔWID were similar among the evaluated gels. Mineral loss (% SH and ΔKHN) and trans-amelodentinal diffusion of hydrogen peroxide were lower for H2O2/NaF/HMP; the H2O2/CaGlu group presented the highest values about the other groups (p < 0.001).ConclusionIt is possible to conclude that the addition of NaF/HMP to the in-office bleaching agent did not interfere with the bleaching efficacy and reduced enamel demineralization and H2O2 diffusion.Clinical significanceThe association of NaF/HMP to the bleaching gel can be used as a novel approach for minimizing the adverse effects of H2O2 by-products and with similar clinical efficacy.
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