| Autor: |
Fernanda Alvarez de Godoi, Natália Russo Carlos, Enrico Coser Bridi, Flávia Lucisano Botelho do Amaral, Fabiana Mantovani Gomes França, Cecilia Pedroso Turssi, Kamila Rosamilia Kantovitz, Roberta Tarkany Basting |
| Jazyk: |
angličtina |
| Předmět: |
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| Zdroj: |
Brazilian Oral Research, Vol 33, Iss 0 |
| Druh dokumentu: |
article |
| ISSN: |
1807-3107 |
| DOI: |
10.1590/1807-3107bor-2019.vol33.0044 |
| Popis: |
Abstract: The aim of this study was to evaluate soluble and insoluble fluoride concentrations in commercial varnishes, and their remineralization effect on artificial caries enamel lesions using surface and cross-sectional microhardness evaluations. Forty bovine enamel blocks were separated into four groups (n=10): control (no treatment), Enamelast (Ultradent Products), Duraphat (Colgate-Palmolive) and Clinpro White Varnish (3M ESPE). Surface enamel microhardness evaluations were obtained, artificial enamel caries lesions were developed by dynamic pH-cycling, and the varnishes were then applied every 6 days, after which the enamel blocks were submitted to dynamic remineralization by pH cycles. After removal of the varnishes, the enamel surfaces were reassessed for microhardness. The blocks were sectioned longitudinally, and cross-sectional microhardness measurements were performed at different surface depths (up to 300 μm depth). Polarized light microscopy images (PLMI) were made to analyze subsurface caries lesions. The fluoride concentration in whole (soluble and insoluble fluoride) and centrifuged (soluble fluoride) varnishes was determined using an extraction method with acetone. The data were analyzed to evaluate the surface microhardness, making adjustments for generalized linear models. There was a significant decrease in enamel surface microhardness after performing all the treatments (p |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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