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Original Paper

Effect of Different Fluoride Concentrations of Experimental Dentifrices on Enamel Erosion and Abrasion

Moretto M.J.a · Magalhães A.C.c · Sassaki K.T.b · Delbem A.C.B.a · Martinhon C.C.R.a

Author affiliations

Departments of aPediatric Dentistry and bBasic Science, Unesp – Universidade Estadual Paulista, Araçatuba, and cDepartment of Biological Science, Bauru School of Dentistry, University of São Paulo, São Paulo, Brazil

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Caries Res 2010;44:135–140

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Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: September 09, 2009
Accepted: January 27, 2010
Published online: April 02, 2010
Issue release date: May 2010

Number of Print Pages: 6
Number of Figures: 1
Number of Tables: 1

ISSN: 0008-6568 (Print)
eISSN: 1421-976X (Online)

For additional information: https://www.karger.com/CRE

Abstract

It has been suggested that fluoride products are able to reduce erosive tooth wear. Thus, the purpose of this in vitro study was to evaluate the effect of dentifrices with different fluoride concentrations as well as of a low-fluoridated dentifrice supplemented with trimetaphosphate (TMP) on enamel erosion and abrasion. One hundred twenty bovine enamel blocks were assigned to the following experimental dentifrices: placebo, 1,100 µg F/g, 500 µg F/g plus 3% TMP and 5,000 µg F/g. The groups of enamel blocks were additionally subdivided into conditions of erosion (ERO) and of erosion plus abrasion (ERO + ABR). For 7 days, the blocks were subjected to erosive challenges (immersion in Sprite® 4 times a day for 5 min each time) followed by a remineralizing period (immersion in artificial saliva between erosive challenges for 2 h). After each erosive challenge, the blocks were exposed to slurries of the dentifrices (10 ml/sample for 15 s). Sixty of the blocks were additionally abraded by brushing using an electric toothbrush (15 s). The alterations of the enamel were quantified using the Knoop hardness test and profilometry (measurements in micrometers). The data were analyzed using a 2-way ANOVA test followed by a Bonferroni correction (p < 0.05). In in vitro conditions, the 5,000 µg F/g and 500 µg F/g plus 3% TMP dentifrices had a greater protective effect when compared with the 1,100 µg F/g dentifrice, under both ERO and ERO + ABR conditions. The results suggest that dentifrices alone are not capable of completely inhibiting tooth wear.

© 2010 S. Karger AG, Basel


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Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: September 09, 2009
Accepted: January 27, 2010
Published online: April 02, 2010
Issue release date: May 2010

Number of Print Pages: 6
Number of Figures: 1
Number of Tables: 1

ISSN: 0008-6568 (Print)
eISSN: 1421-976X (Online)

For additional information: https://www.karger.com/CRE


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