Dentin Erosion: Method Validation and Efficacy of Fluoride Protection
Clifton M. Carey * and William Brown
School of Dental Medicine, University of Colorado, 12800 E. 19th Ave., MS8310, Aurora, CO 80045, USA
*
Author to whom correspondence should be addressed.
Received: 7 August 2017 / Revised: 29 September 2017 / Accepted: 1 October 2017 / Published: 6 October 2017
(This article belongs to the Special Issue Current Concepts on Erosive Tooth Wear)
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Abstract
The aging population experiences more gingival recession and root exposure which increases the opportunity for dentin erosion. This study tested the use of transverse microradiography (TMR) methods to assess dentin erosion and the interaction between fluoride and citric acid on the amount of erosion in the dentin samples. In a 4 × 3 interaction experimental design, four fluoride concentrations (0.00, 25.0, 50.0, and 100.0 mg/L) and three citric acid concentrations (0.0, 0.25, and 1.00%) were combined to form 12 experimental solutions. Forty-eight dentin samples were placed in the experimental solutions for 1 and 4 h and the amount of surface lost was determined by TMR methods. The resolution of the TMR method was 0.9 μm per pixel with a 0.1% and a 5% confidence interval of ±4.2 μm. Dentin erosion increased with the concentration of citric acid and time, the erosion decreased when concentration of fluoride was increased. Effects due to fluoride and citric acid concentrations individually, and their interaction on the amount of erosion observed was statistically significant (p < 0.0001). This study found that TMR methods are appropriate and that 25.0 mg/L was the optimal fluoride concentration to protect dentin from a 1.00% citric acid challenge. View Full-Text
Keywords: dentin; erosion; fluoride; citric acid; prevention; tooth
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY
Carey, C.M.; Brown, W. Dentin Erosion: Method Validation and Efficacy of Fluoride Protection. Dent. J. 2017, 5, 27.
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