Effect of hydrogen-peroxide-based home bleaching agents on enamel hardness

Authors

  • Isana Álvares Ferreira Department of Operative Dentistry, Universidade Federal de Santa Catarina
  • Guilherme Carpena LopeS Department of Operative Dentistry, Universidade Federal de Santa Catarina,
  • Luiz Clovis Cardoso Vieira Department of Operative Dentistry, Universidade Federal de Santa Catarina
  • Élito Araujo Department of Operative Dentistry, Universidade Federal de Santa Catarina

DOI:

https://doi.org/10.20396/bjos.v5i18.8641908

Keywords:

Hydrogen-peroxide. Carbamide peroxide. Bleaching. Enamel. Hardness

Abstract

The aim of this in vitro study was to examine the effect of four commercial hydrogen-peroxide-based home bleaching agents on enamel microhardness. Fifteen human molars conserved in water for no more than 3 months were sectioned mesio-distally. The buccal and lingual surfaces were included in self curing acrylic resin, and the 30 specimens were ground until 600 grid (n=6). At baseline, 6 indentations (Vickers) were made on each of the 6 surfaces of each group, under load of 100g for 30s. Bleaching procedure was performed for 2 weeks with: 4.5% hydrogen-peroxide (Perfecta, Premier), 5.5% hydrogen-peroxide (DayWhite, Discus Dental), 7.5% hydrogenperoxide (DayWhite, Discus Dental), a polyethylene-strip whitening system containing 5.3% hydrogen-peroxide (Whitestrips, Procter&Gamble) and 10% carbamide peroxide (Opalescence, Ultradent) was used as control. After bleaching time, the specimens were rinsed and maintained in fresh artificial saliva, changed daily. A t-test compared each bleaching agent before and after treatment. The results showed that none of the five commercial home bleaching agents reduced the enamel microhardness. I t was concluded that all the five commercial home bleaching agents evaluated in our study showed no adverse effects on enamel microhardness.

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Author Biographies

Isana Álvares Ferreira, Department of Operative Dentistry, Universidade Federal de Santa Catarina

ossui graduação em Odontologia pela Universidade Federal do Rio Grande do Norte (2000), Especialização (2005), Mestrado (2003) e Doutorado (2006) em Odontologia, com área de concentração em Dentística, pela Universidade Federal de Santa Catarina. Professora Adjunto da Faculdade de Odontologia da Universidade Federal do Rio Grande do Norte, exercendo a prática docente nas disciplinas de Clínica Integrada nível II e IV. Atualmente exerce a profissão em consultório particular e como oficial temporário do Exercito Brasileiro, atuando em ambos na área da Dentística Restauradora.

Guilherme Carpena LopeS, Department of Operative Dentistry, Universidade Federal de Santa Catarina,

Guilherme Carpena Lopes Cirurgião-Dentista graduado pela UFRGS (1995), Especialista em Dentística pela UFSC (1998), obteve título de Mestre em Dentística pela UFSC em 2001 e doutorado em Dentística em 2003 (UFSC). É Professor Associado II de Dentística no departamento de Odontologia na Universidade Federal de Santa Catarina (UFSC). Também é Professor convidado no Curso de Especialização em Dentística ABCD. Professor permanente do Programa de Pós-Graduação em Odontologia UFSC sendo orientador de mestrado e Doutorado na área de concentração Dentística. Atualmente, Sub-coordenador do programa de pós-graduação em Odontologia (UFSC). 

Luiz Clovis Cardoso Vieira, Department of Operative Dentistry, Universidade Federal de Santa Catarina

Possui graduação em Odontologia pela Universidade Federal de Santa Catarina (1975), mestrado em Odontologia (Dentística) pela Universidade de São Paulo (1988) e doutorado em Odontologia (Dentística) pela Universidade de São Paulo (1991). Atualmente é professor voluntário da Universidade Federal de Santa Catarina. Tem experiência na área de Odontologia, com ênfase em Clínica Odontológica, atuando principalmente nos seguintes temas: resinas compostas, clareamento dental, resistência de união, odontologia e dentística. Está vinculado ao GRUPO DE PESQUISA em Odontologia DENTÍSTICA FLORIANÓPOLIS.

Élito Araujo, Department of Operative Dentistry, Universidade Federal de Santa Catarina

Possui graduação em Odontologia pela Universidade Federal de Santa Catarina (1972), mestrado em Odontologia (Dentística) pela Universidade de São Paulo (1985) e doutorado em Odontologia (Dentística) pela Universidade de São Paulo (1990). Atualmente é professor titular da Universidade Federal de Santa Catarina. Membro Titular da Academia Catarinense de Odontologia. Sub Chefe do Departamento de Odontologia da UFSC por 03 vezes. Diretor da Escola de Aperfeiçoamento Profisional da ABOSC por 03 vezes. Professor Responsável pela Disciplina de Clínica Integrada no período de 1990 a 2010. Administrador da Editora Ponto 2000 a 2005. Presdiente do Congresso Internacional de Odontologia de Santa Catarina em 2009.

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Published

2015-11-26

How to Cite

1.
Ferreira I Álvares, LopeS GC, Vieira LCC, Araujo Élito. Effect of hydrogen-peroxide-based home bleaching agents on enamel hardness. Braz. J. Oral Sci. [Internet]. 2015 Nov. 26 [cited 2022 Nov. 26];5(18):1090-3. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8641908