Whitening mouthwash containing hydrogen peroxide decreases enamel microhardness in vitro.

Authors

  • Fernando Pelegrim Fernandes Instituto e Centro de Pesquisas São Leopoldo Mandic
  • Cecília Pedroso Turssi Instituto e Centro de Pesquisas Odontológicas São Leopoldo Mandic
  • Fabiana Mantovani Gomes França Instituto e Centro de Pesquisas Odontológicas São Leopoldo Mandic
  • Roberta Tarkany Basting Universidade de São Paulo
  • Flávia Lucisano Botelho do Amaral Instituto e Centro de Pesquisas Odontológicas São Leopoldo Mandic

DOI:

https://doi.org/10.20396/bjos.v16i0.8650504

Keywords:

Tooth bleaching. Hydrogen peroxide. Hardness tests.

Abstract

Aim: To assess the effect of a mouthwash containing hydrogen peroxide (HP) on Knoop microhardness (KMH) of bovine enamel. Methods: Fifty-one enamel slabs were polished and divided into groups (n=17), according to the product used during 28 days: HP – mouthwash containing 1,5% of HP (4 min, once/day); CP - 10% carbamide peroxide gel (2 hours/day); AS - no treatment (kept in artificial saliva (AS). Each fragment was submitted to KMH test (three indentations/fragment, with a 50 g load for 5 sec) four times: before (baseline); during (14 and 28 days) and after (7 days immerged in AS) the bleaching treatment. The data were submitted to repeated-measures two-way ANOVA (α=0.05). Results: There was no effect of the interaction between the time and treatment factors (p=0.327). No significant effect was observed from the time factor (p = 0.054). The factor treatment showed significant effect (p =0.002). Regardless of time, the KMH of the enamel submitted to HP was lower than the value observed with the use of CP, which did not differ significantly from the control group (AS). Conclusion: Although there was a trend of decreasing enamel microhardness over time, only the mouthwash containing hydrogen peroxide had a significant effect.

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Author Biographies

Fernando Pelegrim Fernandes, Instituto e Centro de Pesquisas São Leopoldo Mandic

Possui graduação em Odontologia pelo Instituto e Centro de Pesquisas São Leopoldo Mandic, Campinas, SP (2011 - 2014), Mestrando em Odontologia, área de concentração em Dentística pela Faculdade de Odontologia São Leopoldo Mandic, Campinas, SP. Estagiário Docente nas disciplinas de Dentística e Clínica Integrada II no curso de Graduação em Odontologia da Faculdade de Odontologia São Leopoldo Mandic, Campinas, SP.

Cecília Pedroso Turssi, Instituto e Centro de Pesquisas Odontológicas São Leopoldo Mandic

Possui graduação em Odontologia pela FOAr-UNESP (1996), mestrado em Clínica Odontológica (Área de Dentística) pela FOP-UNICAMP (2001) e doutorado em Clínica Odontológica (Área de Dentística) pela FOP-UNICAMP (2005), com estágio no exterior no Department of Biomaterials and Biomechanics na OHSU, Portland, OR, EUA, por um ano. Realizou pós-doutorado na FORP-USP (2005-2007). Integra a equipe de docentes do Instituto e Centro de Pesquisas Odontológicas São Leopoldo Mandic.

Fabiana Mantovani Gomes França, Instituto e Centro de Pesquisas Odontológicas São Leopoldo Mandic

Possui graduação em Odontologia pela Faculdade de Odontologia de Piracicaba - UNICAMP (1997), Mestrado em Clínica Odontológica pela Faculdade de Odontologia de Piracicaba - UNICAMP (2001) e doutorado em Clínica Odontológica pela Faculdade de Odontologia de Piracicaba - UNICAMP (2004). Atualmente é coordenadora do curso de Graduação em Odontologia da Faculdade São Leopoldo Mandic, atua como editora adjunta da Revista Gaúcha de Odontologia e como Coordenadora do Comitê de Ética em Pesquisa da Faculdade São Leopoldo Mandic. Professora de graduação disciplina Clínica Integrada e pós-graduação da Faculdade São Leopoldo Mandic nas áreas de Dentística, Clínicas Odontológicas e Implantodontia.

Roberta Tarkany Basting, Universidade de São Paulo

Possui graduação em Odontologia pela Faculdade de Odontologia de Piracicaba - UNICAMP (1996), mestrado em Clínica Odontológica Integrada - Dentística pela Faculdade de Odontologia de Piracicaba - UNICAMP (1999), doutorado em Clínica Odontológica Integrada - Dentística pela Faculdade de Odontologia de Piracicaba - UNICAMP (2001) e pós-doutorado em Dentística pela Faculdade de Odontologia de Ribeirão Preto - USO (2003). Atualmente é professora da Faculdade de Odontologia e Centro de Pesquisas São Leopoldo Mandic, ministrando aulas na graduação, especialização, mestrado e doutorado, e coordenadora dos cursos de Mestrado em Dentística. 

Flávia Lucisano Botelho do Amaral, Instituto e Centro de Pesquisas Odontológicas São Leopoldo Mandic

Graduada em Odontologia pela Universidade de São Paulo (2002). Mestre em Ciências da Saúde pela Faculdade de Odontologia de Ribeirão Preto/USP (2006). Doutora em Clínicas Odontológicas pelo Centro de Pesquisa Odontológica São Leopoldo Mandic (2010). Professora dos cursos de graduação em Odontologia (Dentística e Clínica Integrada) e Mestrado em Dentística da Faculdade de Odontologia e Centro de Pesquisas Odontológicas São Leopoldo Mandic- Campinas-SP. Tem experiência na área de Odontologia, com ênfase em Dentística.

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Published

2017-12-15

How to Cite

1.
Fernandes FP, Turssi CP, França FMG, Basting RT, Amaral FLB do. Whitening mouthwash containing hydrogen peroxide decreases enamel microhardness in vitro. Braz. J. Oral Sci. [Internet]. 2017 Dec. 15 [cited 2023 Feb. 3];16:1-9. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8650504

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