Revista de Odontologia da UNESP
https://revodontolunesp.com.br/article/doi/10.1590/1807-2577.07320
Revista de Odontologia da UNESP
Original Article

Effect of whitening dentifrices containing optical agent on the variation of color, roughness and mass of a nanoparticulate composite resin

Efeito de dentifrícios branqueadores contendo agente óptico na variação da cor, rugosidade e massa de uma resina composta nanoparticulada

Rafaela Silva OLIVEIRA; Hannah Barros SIMÕES; Natália Nascimento ODILON; Max José Pimenta LIMA; Elisângela de Jesus CAMPOS

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Abstract

Abstract: Introduction: Blue covarine is a pigment that promotes optical changes in dental surfaces, providing whitening.

Objective: To evaluate in vitro the effect of bleaching dentifrices containing Blue covarine in nanoparticulate composite resin subjected to artificial darkening.

Material and method: One hundred sixty (160) specimens (PBs) of FILTEK Z350XT nanoparticulate composite resin were randomly divided into two experiments: Experiment I - 8 groups (n=10) submitted to brushing with an electric toothbrush for 1 month; Experiment II - 8 groups (n=10) submitted to simulated brushing for 6, 12 and 24 months. Groups were distributed according to the solution/dentifrice tested: CG (distilled water) and 7 test groups (GT1- Coltene Herjos, GT2- Colgate Total 12 Clean Mint, GT3- Colgate Luminous White Brilliant Mint, GT4- Oral B 3D White Perfection, GT5- Close Up White Now Glacier Fresh, GT6- Close Up White Attraction Diamond and GT7- Sorriso Xtreme White Evolution).

Result: In Experiment I, there was greater ∆E in GT6 in relation to CG, GT2, GT4 and GT5, with no differences among them. In Experiment II, after 24 months of brushing, there was greater ∆E in groups GT6 and GT7. After 24 months of simulated brushing, there was no change in roughness or loss of mass in any group.

Conclusion: The whitening effect promoted by dentifrices containing the agent Blue covarine seems to be related to the association of this agent with the abrasives present in the formulations of whitening dentifrices.

Keywords

Dentifrices, Blue covarine, whitening agents, composite resins

Resumo

Resumo: Introdução: O Blue covarine é um pigmento que promove alterações ópticas nas superfícies dentárias proporcionando o seu branqueamento.

Objetivo: Avaliar in vitro o efeito de dentifrícios branqueadores contendo Blue covarine em resina composta nanoparticulada submetida a escurecimento artificial.

Material e método: 160 corpos de prova (CPs) de resina composta nanoparticulada FILTEK Z350XT foram divididos aleatoriamente em dois experimentos: Experimento I- 8 grupos (n=10) submetidos a escovação com escova elétrica por 1 mês; Experimento II- 8 grupos (n=10) submetidos a escovação simulada por 6, 12 e 24 meses. Os grupos foram distribuídos de acordo com a solução/dentifrício testado: GC (água destilada) e 7 grupos teste (GT1-Coltene Herjos, GT2- Colgate Total 12 Clean Mint, GT3- Colgate Luminous White Brilliant Mint, GT4- Oral B 3D White Perfection, GT5- Close Up White Now Glacier Fresh, GT6- Close Up White Attraction Diamond e GT7- Sorriso Xtreme White Evolution).

Resultado: No experimento I, houve maior ∆E no GT6 com relação ao GC, GT2, GT4 e GT5, que não diferiram entre si. No experimento II, após 24 meses de escovação houve maior ∆E nos grupos GT6 e GT7. Após 24 meses de escovação simulada não houve alteração da rugosidade nem perda de massa em nenhum grupo.

Conclusão: O efeito branqueador promovido pelos dentifrícios contendo o agente Blue covarine parece estar relacionado à associação deste agente com os abrasivos presentes nas formulações dos dentifrícios branqueadores.
 

Palavras-chave

Dentifrícios, Blue covarine, agentes branqueadores, resinas compostas

References

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Submitted date:
10/23/2020

Accepted date:
12/15/2020

602570e40e8825194d1d54d5 rou Articles
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