In vitro evaluation of the whitening effect of mouth rinses containing hydrogen peroxide
The aim of this study was to evaluate the bleaching effect of two mouth rinses containing hydrogen peroxide. Thirty premolars were randomly divided into two groups (n = 15): Listerine Whitening (LW) and Colgate Plax Whitening (PW). The teeth were fixed on a wax plate and with acrylic resin, at a dis...
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Sociedade Brasileira de Pesquisa Odontológica
2012-06-01
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doaj-146d3eaba4194d7bb54f631a55037eec2020-11-25T01:57:50ZengSociedade Brasileira de Pesquisa Odontológica Brazilian Oral Research1806-83242012-06-0126326927410.1590/S1806-83242012000300014In vitro evaluation of the whitening effect of mouth rinses containing hydrogen peroxideFábio Garcia LimaTalita Aparecida RottaSonara PensoSônia Saeger MeirelesFlávio Fernando DemarcoThe aim of this study was to evaluate the bleaching effect of two mouth rinses containing hydrogen peroxide. Thirty premolars were randomly divided into two groups (n = 15): Listerine Whitening (LW) and Colgate Plax Whitening (PW). The teeth were fixed on a wax plate and with acrylic resin, at a distance of 5 mm between each other, exposing the buccal surfaces. All teeth were stored in artificial saliva for 45 days, being removed twice a day to be immersed for 1 min in each mouthwash, followed by 10-second washing in tap water. The pH of each product was measured. Digital images of each tooth were captured under standardized conditions. These images were cut in areas previously demarcated and analyzed in Adobe Photoshop 7.0 using the CIEL*a*b* color space system. Data were statistically analyzed by a paired t test and an independent samples t test (p < 0.05). The pH values were 5.6 and 3.4 for LW and PW, respectively. Both treatment groups showed a decrease in the b* parameter (p < 0.01), but a decrease of a* was observed only for PW (p < 0.01). While the LW group showed an improvement in lightness (L*) (p = 0.03), the PW group had a decrease in the L* parameter (p = 0.02). Within the limitations of this study, it is possible to conclude that both products caused some degree of whitening; however, extreme care should be taken when using Colgate Plax Whitening, since its decline in luminosity might be due to its lower pH.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242012000300014Hydrogen PeroxideMouthwashesTooth Bleaching |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Fábio Garcia Lima Talita Aparecida Rotta Sonara Penso Sônia Saeger Meireles Flávio Fernando Demarco |
spellingShingle |
Fábio Garcia Lima Talita Aparecida Rotta Sonara Penso Sônia Saeger Meireles Flávio Fernando Demarco In vitro evaluation of the whitening effect of mouth rinses containing hydrogen peroxide Brazilian Oral Research Hydrogen Peroxide Mouthwashes Tooth Bleaching |
author_facet |
Fábio Garcia Lima Talita Aparecida Rotta Sonara Penso Sônia Saeger Meireles Flávio Fernando Demarco |
author_sort |
Fábio Garcia Lima |
title |
In vitro evaluation of the whitening effect of mouth rinses containing hydrogen peroxide |
title_short |
In vitro evaluation of the whitening effect of mouth rinses containing hydrogen peroxide |
title_full |
In vitro evaluation of the whitening effect of mouth rinses containing hydrogen peroxide |
title_fullStr |
In vitro evaluation of the whitening effect of mouth rinses containing hydrogen peroxide |
title_full_unstemmed |
In vitro evaluation of the whitening effect of mouth rinses containing hydrogen peroxide |
title_sort |
in vitro evaluation of the whitening effect of mouth rinses containing hydrogen peroxide |
publisher |
Sociedade Brasileira de Pesquisa Odontológica |
series |
Brazilian Oral Research |
issn |
1806-8324 |
publishDate |
2012-06-01 |
description |
The aim of this study was to evaluate the bleaching effect of two mouth rinses containing hydrogen peroxide. Thirty premolars were randomly divided into two groups (n = 15): Listerine Whitening (LW) and Colgate Plax Whitening (PW). The teeth were fixed on a wax plate and with acrylic resin, at a distance of 5 mm between each other, exposing the buccal surfaces. All teeth were stored in artificial saliva for 45 days, being removed twice a day to be immersed for 1 min in each mouthwash, followed by 10-second washing in tap water. The pH of each product was measured. Digital images of each tooth were captured under standardized conditions. These images were cut in areas previously demarcated and analyzed in Adobe Photoshop 7.0 using the CIEL*a*b* color space system. Data were statistically analyzed by a paired t test and an independent samples t test (p < 0.05). The pH values were 5.6 and 3.4 for LW and PW, respectively. Both treatment groups showed a decrease in the b* parameter (p < 0.01), but a decrease of a* was observed only for PW (p < 0.01). While the LW group showed an improvement in lightness (L*) (p = 0.03), the PW group had a decrease in the L* parameter (p = 0.02). Within the limitations of this study, it is possible to conclude that both products caused some degree of whitening; however, extreme care should be taken when using Colgate Plax Whitening, since its decline in luminosity might be due to its lower pH. |
topic |
Hydrogen Peroxide Mouthwashes Tooth Bleaching |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242012000300014 |
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