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Effects of microabrasion association to at-home bleaching on hydrogen peroxide penetration and color change.
Bernardi, Laís Giacomini; Favoreto, Michael Willian; de Souza Carneiro, Taynara; Borges, Christiane Philippini Ferreira; Pulido, Camilo; Loguercio, Alessandro D.
Afiliação
  • Bernardi LG; Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Parana, Brazil.
  • Favoreto MW; Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Parana, Brazil.
  • de Souza Carneiro T; Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Parana, Brazil.
  • Borges CPF; Department of Chemistry, State University of Ponta Grossa, Parana, Brazil.
  • Pulido C; Department of Restorative Dentistry, San Francisco de Quito University (USFQ), Quito, Ecuador.
  • Loguercio AD; Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Parana, Brazil.
J Esthet Restor Dent ; 34(2): 335-341, 2022 03.
Article em En | MEDLINE | ID: mdl-34723443
PURPOSE: This study aimed to quantify the penetration of hydrogen peroxide (HP) inside the pulp cavity and color change with two different concentrations of HP to at-home bleaching associated or not with enamel microabrasion (MA). METHODS: Forty healthy premolars were randomly divided in four groups (n = 10): only HP4%, MA + HP4%, only HP10%, MA + HP10%. The concentration (µg/ml) of HP was assessed using UV-Vis spectrophotometry. The color change (ΔEab , ΔE00 and WID ) was evaluated before and one-week after bleaching. Data were evaluated for a two-way ANOVA and the Tukey's test (α = 0.05). RESULTS: The application of MA increased the amounts of HP inside the pulp chamber when compared to without MA, as well as PH10% when compared to PH4% (p < 0.0001). PH10% showed higher WID when compared to PH4%. No significant difference was observed when ΔEab , and ΔE00 were used. CONCLUSIONS: The enamel MA before at-home bleaching promotes greater penetration of HP, although this procedure did not significantly affect the color change. CLINICAL SIGNIFICANCE: Since greater penetration of HP into the pulp chamber was detected when home bleaching was applied immediately after MA, the clinician should not apply home bleaching gels in the same session when MA was performed.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Clareamento Dental / Clareadores Dentários Tipo de estudo: Clinical_trials / Risk_factors_studies Idioma: En Revista: J Esthet Restor Dent Assunto da revista: ODONTOLOGIA Ano de publicação: 2022 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido
Texto completo
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Clareamento Dental / Clareadores Dentários Tipo de estudo: Clinical_trials / Risk_factors_studies Idioma: En Revista: J Esthet Restor Dent Assunto da revista: ODONTOLOGIA Ano de publicação: 2022 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido