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Prevention of Caries and Dental Erosion by Fluorides-A Critical Discussion Based on Physico-Chemical Data and Principles.

Authors:
Matthias Epple Joachim Enax Frederic Meyer

Dent J (Basel) 2022 Jan 5;10(1). Epub 2022 Jan 5.

Dr. Kurt Wolff GmbH & Co. KG, Research Department, Johanneswerkstr. 34-36, 33611 Bielefeld, Germany.

Dental erosion is a common problem in dentistry. It is defined as the loss of tooth mineral by the attack of acids that do not result from caries. From a physico-chemical point of view, the nature of the corroding acids only plays a minor role. A protective effect of fluorides, to prevent caries and dental erosion, is frequently claimed in the literature. The proposed modes of action of fluorides include, for example, the formation of an acid-resistant fluoride-rich surface layer and a fluoride-induced surface hardening of the tooth surface. We performed a comprehensive literature study on the available data on the interaction between fluoride and tooth surfaces (e.g., by toothpastes or mouthwashes). These data are discussed in the light of general chemical considerations on fluoride incorporation and the acid solubility of teeth. The analytical techniques available to address this question are presented and discussed with respect to their capabilities. In summary, the amount of fluoride that is incorporated into teeth is very low (a few µg mm), and is unlikely to protect a tooth against an attack by acids, be it from acidic agents (erosion) or from acid-producing cariogenic bacteria.

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http://dx.doi.org/10.3390/dj10010006DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8774499PMC
January 2022

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Clin Oral Investig 2022 May 19. Epub 2022 May 19.

Department of Cariology, Restorative Sciences and Endodontics, School of Dentistry, University of Michigan, 1011 N. University Ave. Room 5223, MI, 48109-1078, Ann Arbor, USA.

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*So Ran Kwon, DDS, MS, PhD, MS, professor & director of Student Research Program, Division of General Dentistry, Loma Linda University School of Dentistry, Loma Linda, CA, USA.

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Department of Maxillofacial Prosthetics, Graduate School of Medical and Dental Science, Tokyo Medical and Dental University, Tokyo, Japan.

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