Journal of dentistry · 2025
Impact of microabrasion and a remineralizing agent before in-office bleaching on hydrogen peroxide permeability, color alteration, and enamel morphology.
СтатьяПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод в очереди
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Favoreto Michael Willian, Condolo Leticia, Camargo Camila Mendes, Lima Rafael Rodrigues, Carrillo Karol, Calixto Abraham Lincoln, Reis Alessandra, Loguercio Alessandro D
Аннотация
OBJECTIVE: This in vitro study evaluated hydrogen peroxide (HP) penetration into the pulp chamber, bleaching efficacy, and surface enamel morphology of human teeth subjected to enamel microabrasion (MA) combined with in-office bleaching (IOB), with or without the application of casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) remineralizing agent.
METHODS: Forty sound premolars were randomly divided into four groups: no treatment (NT), IOB only (IOB), MA followed by IOB (MA+IOB), and MA followed by CPP-ACP and then IOB (MA+CPP-ACP+IOB). HP concentration in the pulp chamber was measured using UV-Vis spectrophotometry, while bleaching efficacy was assessed with a digital spectrophotometer. Surface morphology was analyzed using scanning electron microscopy (SEM), and data were statistically analyzed.
RESULTS: The NT group exhibited lower HP penetration compared to experimental groups, while MA+IOB showed higher HP levels than IOB and MA+CPP-ACP+IOB. All experimental groups demonstrated significant color changes, except NT. The MA+IOB group displayed more grooves on enamel surfaces than the MA+CPP-ACP+IOB group, which had remineralizing agent deposits.
CONCLUSION: Combining MA and IOB increases HP penetration into the pulp chamber, but using CPP-ACP after MA can mitigate this effect without compromising bleaching efficacy.
CLINICAL SIGNIFICANCE: Employing a CPP-ACP remineralizing agent post-microabrasion can help reduce HP levels in the pulp chamber while maintaining effective whitening.
METHODS: Forty sound premolars were randomly divided into four groups: no treatment (NT), IOB only (IOB), MA followed by IOB (MA+IOB), and MA followed by CPP-ACP and then IOB (MA+CPP-ACP+IOB). HP concentration in the pulp chamber was measured using UV-Vis spectrophotometry, while bleaching efficacy was assessed with a digital spectrophotometer. Surface morphology was analyzed using scanning electron microscopy (SEM), and data were statistically analyzed.
RESULTS: The NT group exhibited lower HP penetration compared to experimental groups, while MA+IOB showed higher HP levels than IOB and MA+CPP-ACP+IOB. All experimental groups demonstrated significant color changes, except NT. The MA+IOB group displayed more grooves on enamel surfaces than the MA+CPP-ACP+IOB group, which had remineralizing agent deposits.
CONCLUSION: Combining MA and IOB increases HP penetration into the pulp chamber, but using CPP-ACP after MA can mitigate this effect without compromising bleaching efficacy.
CLINICAL SIGNIFICANCE: Employing a CPP-ACP remineralizing agent post-microabrasion can help reduce HP levels in the pulp chamber while maintaining effective whitening.