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At-home bleaching with carbamide peroxide with concentrations below 10%: bleaching efficacy and permeability in the pulp chamber.
Cordeiro, Deisy Cristina Ferreira; Favoreto, Michael Willian; Centenaro, Gabrielle Gomes; Gumy, Fernanda Novak; Loguercio, Alessandro D; Borges, Christiane Philippini Ferreira; Reis, Alessandra.
Afiliación
  • Cordeiro DCF; Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Rua Carlos Cavalcanti, 4748, Bloco M - Uvaranas, Ponta Grossa, Paraná, Brazil.
  • Favoreto MW; Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Rua Carlos Cavalcanti, 4748, Bloco M - Uvaranas, Ponta Grossa, Paraná, Brazil.
  • Centenaro GG; Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Rua Carlos Cavalcanti, 4748, Bloco M - Uvaranas, Ponta Grossa, Paraná, Brazil.
  • Gumy FN; Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Rua Carlos Cavalcanti, 4748, Bloco M - Uvaranas, Ponta Grossa, Paraná, Brazil.
  • Loguercio AD; Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Rua Carlos Cavalcanti, 4748, Bloco M - Uvaranas, Ponta Grossa, Paraná, Brazil.
  • Borges CPF; Department of Chemistry, State University of Ponta Grossa, Ponta Grossa, Paraná, Brazil.
  • Reis A; Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Rua Carlos Cavalcanti, 4748, Bloco M - Uvaranas, Ponta Grossa, Paraná, Brazil. reis_ale@hotmail.com.
Clin Oral Investig ; 28(4): 224, 2024 Mar 21.
Article en En | MEDLINE | ID: mdl-38509406
ABSTRACT

OBJECTIVES:

To evaluate the bleaching efficacy and permeability of hydrogen peroxide (HP) in the pulp chamber of human teeth bleached with lower concentrations of carbamide peroxide gel (4%, 5% and 7% CP). MATERIALS AND

METHODS:

Bleaching gels with lower concentrations were formulated and a commercial standard gel, 10% CP, was used as a reference. Fifty-six human premolars were randomly divided into four groups. Applications of the bleaching gel were made for 3 h for 21 days. The bleaching efficacy was evaluated by digital spectrophotometry on 1, 7, 14 and 21 days, with analysis in the ∆Eab, ∆E00 and WID color spaces. The concentration of HP in the pulp chamber was measured in the same periods by UV-Vis spectrophotometry (µg/mL). Two-way repeated analysis of variance (ANOVA) examined bleaching efficacy and HP permeability, followed by Tukey's post-hoc test (α = 0.05).

RESULTS:

All groups showed significant color changes, with no statistical differences after the second and third week of bleaching (p > 0.05). The 'time' factor was statistically different (p < 0.05), increasing the bleaching efficacy throughout the treatment. The 4% CP group had lower HP levels in the pulp chamber (p < 0.05).

CONCLUSIONS:

The results seem promising, revealing that low concentration gels are as effective as 10% CP with the benefit of reducing the amount of HP in the pulp chamber. CLINICAL RELEVANCE Low concentration 4% PC and 5% PC maintains bleaching efficacy, reduces the penetration of HP peroxide into the pulp chamber, and may reduce tooth sensitivity.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Blanqueamiento de Dientes / Blanqueadores Dentales Límite: Humans Idioma: En Revista: Clin Oral Investig Asunto de la revista: ODONTOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Blanqueamiento de Dientes / Blanqueadores Dentales Límite: Humans Idioma: En Revista: Clin Oral Investig Asunto de la revista: ODONTOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Alemania