journal article·2019-01-28Open access

Microhardness of bovine enamel after different fluoride application protocols

Marcia Regina Cabral OLIVEIRA, Pedro Henrique Cabral OLIVEIRA, Luiz Henrique Cabral OLIVEIRA, Anna Carolina Ratto Tempestini HORLIANA, Paulo Francisco CÉSAR, Sandra Kiss MOURA, Sandra Kalil BUSSADORI

Dental Materials Journal· Volume 38· Issue 1

Abstract

The aim of the present study was to evaluate microhardness, mineral recovery and the enamel surface after the application of topical fluoride to artificial dental caries. Twenty-five bovine enamel blocks were prepared for artificial caries-like lesions and randomly divided into five groups (n=5): untreated (C control), 1.23% acidulated phosphate fluoride gel (APG), 2% neutral fluoride gel (NFG), 1.23% acidulated fluoride mousse (AFM) and fluoride varnish (5% Duraphat, DFV). Knoop microhardness (KHN) was evaluated after 7 and 14 days of treatment as well as 1 week after 28 days of treatment. Electron and confocal microscopy and energy dispersive spectroscopy were performed. KHN data were treated with two-way ANOVA (material×time) and Tukey's test at a 5% significance level. Differences were found among groups over time (p<0.001). Microhardness varied after 7 and 14 days of treatment and remained stable 1 week after 28 days of treatment. Mineral recovery and enamel topography varied among groups, with the fluoride varnish achieving the most uniform topography.
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Research context

OpenAlex topics: Dental Health and Care Utilization · Dental Erosion and Treatment · Oral microbiology and periodontitis research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Biophotonics Applied to Health Sciences, Universidade Nove de Julho

Department of Biomaterials and Oral Biology, Universidade de São Paulo, Faculdade de Odondologia

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