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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Protective Effect of Fluoride Varnish and Fluoride Gel on Enamel Erosion: Roughness, SEM-EDS, and mu-EDXRF Studies

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Author(s):
Silva Soares, Luis Eduardo [1] ; Belfort De Carvalho Filho, Antonio Carlos [2]
Total Authors: 2
Affiliation:
[1] Univ Vale do Paraiba, Dent Mat & Operat Dent Dept, Lab Biomed Vibrat Spect, Sch Dent, Res & Dev Inst, UNIVAP, LEVB, BR-12244000 Sao Paulo - Brazil
[2] Ctr Ensino Unificado Teresina, Teresina, Piaui - Brazil
Total Affiliations: 2
Document type: Journal article
Source: MICROSCOPY RESEARCH AND TECHNIQUE; v. 78, n. 3, p. 240-248, MAR 2015.
Web of Science Citations: 11
Abstract

ObjectivesThe effects of fluoride treatment on bovine enamel subjected to acid erosion were studied by roughness (Ra) measurements, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and microenergy-dispersive X-ray fluorescence spectrometry (-EDXRF). Materials and MethodEnamel samples (63) were divided into nine groups (n=7): artificial saliva (AS), Pepsi Twist((R)) (PT), orange juice (OJ), Duraphat((R))+Pepsi Twist((R)) (DPH/PT), Duraphat((R))+orange juice (DPH/OJ), Duofluorid((R))+Pepsi Twist((R)) (DUO/PT), Duofluorid((R))+orange juice (DUO/OJ), fluoride gel+Pepsi Twist((R)) (FG/PT), and fluoride gel+orange juice (FG/OJ). Fluoride was applied and the samples were submitted to six cycles (demineralization: Pepsi Twist((R)) or orange juice, 10 min; remineralization: saliva, 1 h). The enamel surface in depth was exposed and 63 line-scan maps were performed. ResultsThe elemental analysis by EDS revealed that only fluoride treated groups had any detectable fluorine after erosion cycles (DPH/PT: 3.50 wt%; DPH/OJ: 3.37 wt%; DUO/PT: 2.69 wt%; DUO/OJ: 3.54 wt%; FG/PT: 2.17 wt%; FG/OJ: 2.77 wt%). PT treatment resulted in significantly higher Ra values than the artificial saliva (P<0.001). Scanning electron microscopy (SEM) analysis of fluoride protected enamel showed areas with some globular structures or a residual layer of varnish. The enamel thickness was significantly lower in PT (0.630.087 mm) than in DPH/PT (0.87 +/- 0.16 mm) and DUO/PT (0.92 +/- 0.14 mm) groups (P<0.01). Clinical RelevanceFluoride treatments protected enamel without Ra increase and loss of enamel tissue. Microsc. Res. Tech. 78:240-248, 2015. (c) 2015 Wiley Periodicals, Inc. (AU)

FAPESP's process: 07/07984-5 - VIBRATIONAL, PHYSIC AND MECHANICAL CHARACTERIZATION OF DENTAL COMPOSITES DEGRADATION.
Grantee:Luís Eduardo Silva Soares
Support Opportunities: Regular Research Grants