Revista de Odontologia da UNESP
https://revodontolunesp.com.br/article/doi/10.1590/1807-2577.02021
Revista de Odontologia da UNESP
Original Article

Weight-loss and surface roughness of enamel after microabrasion procedure with different agents

Perda de peso e rugosidade da superfície do esmalte após procedimento de microabrasão com diferentes agentes

Pâmela Lopes Pedro da SILVA; Patricia Pereira MACIEL; Lídia Batista Conrado MARTINS; Fabíola Galbiatti de CARVALHO; Rogério Lacerda dos SANTOS; Eliton Souto de MEDEIROS; Hugo Lemes CARLO

http://dx.doi.org/10.1590/1807-2577.02021 Rev. odontol. UNESP, vol.50, e20210020, 2021
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Abstract

Abstract: Introduction: Enamel microabrasion is achieved by abrasion of the enamel surface and it is a quick, practical and efficient procedure.

Objective: It was assessed the weight loss and surface aspect of enamel after microabrasion procedures with commercial and mixtures made in-office.

Material and method: Eighty bovine incisors were divided into four groups (n=10): OpalustreTM (6.6% HCl + silicon carbide); Whiteness RMTM (6% HCl + silicon carbide); 37% H3PO4 + pumice and 10% HCl + pumice. Treatment was performed by 15 applications of 10s duration. The enamel weight loss was determined by the difference in weight before and after the microabrasion. The surfaces were analyzed by a surface roughness equipment and scanning electron microscopy. Data were submitted to paired-T test, one-way ANOVA and Tukey tests (α=0.05).

Result: It was observed significantly weight loss for all groups. The difference in weight loss ranged from 0.037±0.012 for group 37% H3PO4 and from 0.054±0.009 for group 6,6% HCl. There was a significant increase in surface roughness for all groups and 10% HCl group showed the lower results (0.65±0.09). It was observed different patterns of enamel morphology by SEM images.

Conclusion: The in-office mixtures resulted in the lowest enamel structure loss (37% H3PO4) and the lowest surface roughness (10% HCl).

Keywords

Enamel miroabrasion, tooth wear, surface roughness, microabrasion agents

Resumo

Resumo: Introdução: A microabrasão do esmalte é realizada através da abrasão da superfície do mesmo, apresentando-se como um procedimento rápido, prático e eficiente.

Objetivo: Avaliar a perda de peso e o aspecto superficial do esmalte após procedimentos de microabrasão com agentes comerciais e não comerciais.

Material e método: Oitenta incisivos bovinos foram divididos em quatro grupos (n = 10): OpalustreTM (6,6% HCl + carboneto de silício); Whiteness RMTM (6% HCl + carboneto de silício); 37% H3PO4 + pedra-pomes e 10% HCl + pedra-pomes. O tratamento foi realizado em 15 aplicações de 10s de duração. A perda de peso do esmalte foi determinada pela diferença de peso antes e depois da microabrasão. As superfícies foram analisadas por equipamento de rugosidade superficial e microscopia eletrônica de varredura. Os dados foram submetidos ao teste T-pareado, ANOVA one-way e teste de Tukey (α = 0,05).

Resultado: Foi observada perda de peso significativa para todos os grupos, a diferença na perda de peso variou de -0,037±0,012 para o grupo 37% H3PO4 a -0.054±0.009 para o grupo 6.6% HCl. Houve um aumento significativo na rugosidade da superfície para todos os grupos e o grupo 10%HCl apresentou os resultados mais baixos (0,65±0,09). Foram observados diferentes padrões de morfologia do esmalte por meio de imagens MEV.

Conclusão: Os agentes não comerciais resultaram na menor perda de estrutura do esmalte (37% H3PO4) e na rugosidade superficial (10% HCl).
 

Palavras-chave

Microabrasão do esmalte, desgaste dentário, rigidez da superfície, agentes de microabrasão

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Submitted date:
04/05/2021

Accepted date:
09/01/2021

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