Acta odontologica Scandinavica · 2012
Enamel properties after tooth bleaching with hydrogen/carbamide peroxides in association with a CPP-ACP paste.
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de Vasconcelos Adriana Alcantara Meira, Cunha Ana Gabriela Gama, Borges Boniek Castillo Dutra, Vitoriano Jussier de Oliveira, Alves-Júnior Clodomiro, Machado Cláudia Tavares, dos Santos Alex José Souza
Аннотация
BACKGROUND: This study evaluated the impact of bleaching teeth using blends of a CPP-ACP paste (MI Paste; MI) and carbamide/hydrogen peroxides in different proportions on surface properties of bleached enamel.
METHODS: Ninety bovine incisors were bleached with 7.5% hydrogen peroxide (HP), 16% carbamide peroxide (CP), MI and blends of HP or CP:MI at three proportions (1:1, 2:1, 1:2). Hardness and roughness were measured at baseline and after bleaching. Enamel morphology was evaluated by Scanning Electron Microscopy (SEM). The data were analyzed by two-way ANOVA for repeated measurements and Tukey's test.
RESULTS: Most of the samples bleached with MI in combination with peroxides presented increased hardness and roughness which were associated to mineral deposition, as observed by SEM images. Blends with higher fractions of MI did not offer superior benefits.
CONCLUSIONS: The use of a CPP-ACP paste mixed to carbamide/hydrogen peroxides can decrease adverse side-effects from tooth bleaching on an enamel surface.
METHODS: Ninety bovine incisors were bleached with 7.5% hydrogen peroxide (HP), 16% carbamide peroxide (CP), MI and blends of HP or CP:MI at three proportions (1:1, 2:1, 1:2). Hardness and roughness were measured at baseline and after bleaching. Enamel morphology was evaluated by Scanning Electron Microscopy (SEM). The data were analyzed by two-way ANOVA for repeated measurements and Tukey's test.
RESULTS: Most of the samples bleached with MI in combination with peroxides presented increased hardness and roughness which were associated to mineral deposition, as observed by SEM images. Blends with higher fractions of MI did not offer superior benefits.
CONCLUSIONS: The use of a CPP-ACP paste mixed to carbamide/hydrogen peroxides can decrease adverse side-effects from tooth bleaching on an enamel surface.
Предметные рубрики MeSH
Analysis of VarianceAnimalsCarbamide PeroxideCaseinsCattleDental EnamelDentifricesDose-Response Relationship, DrugDrug CombinationsHardnessHydrogen PeroxideHydrogen-Ion ConcentrationMicroscopy, Electron, ScanningPeroxidesSurface PropertiesTeaTooth BleachingTooth Bleaching AgentsTooth DiscolorationUrea