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Type: Artigo de periódico
Title: Evaluation Of Physical Properties Of Enamel After Microabrasion, Polishing, And Storage In Artificial Saliva.
Author: Fragoso, L S M
Lima, D A N L
de Alexandre, R S
Bertoldo, C E S
Aguiar, F H B
Lovadino, J R
Abstract: This study evaluated the effect of microabrasion and polishing on the microhardness and roughness of bovine enamel, and the effect of artificial saliva on the hardness of enamel. Bovine enamel blocks were used, forming the groups (n = 48): GI-37% phosphoric acid and pumice, GII--Opalustre, and GIII--Whiteness RM. The groups were divided into different subgroups: (a) diamond paste, (b) fluoride prophylactic paste, and (c) without polishing. Hardness tests were carried out at the following set times: (T1) initial, (T2) after microabrasion and polishing, (T3) after immersion in artificial saliva for 24 h; and (T4) after seven days of immersion. Surface roughness tests were performed. The obtained data were analyzed by two-factor ANOVA and Tukey's test with significance of 5%. Microhardness increased in T2; without polishing, only groups GII and GIII showed an increased microhardness. T3 did not differ from T4; GI, GII and GIII did not provide surface roughness that differed from each other; and all microabrasive systems followed by polishing showed a higher surface smoothness compared with the control groups. It is concluded that microabrasion followed by polishing provided higher hardness and better surface smoothness of the enamel. However, immersion in artificial saliva was not able to increase the enamel hardness.
Subject: Analysis Of Variance
Carbon Compounds, Inorganic
Complex Mixtures
Dental Enamel
Hydrochloric Acid
Microscopy, Electron, Scanning
Phosphoric Acids
Propylene Glycol
Saliva, Artificial
Silicon Compounds
Surface Properties
Time Factors
Citation: Biomedical Materials (bristol, England). v. 6, n. 3, p. 035001, 2011-Jun.
Rights: fechado
Identifier DOI: 10.1088/1748-6041/6/3/035001
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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