The Open Dentistry Journal




ISSN: 1874-2106 ― Volume 13, 2019
REVIEW ARTICLE

Modes of Action and Clinical Efficacy of Particulate Hydroxyapatite in Preventive Oral Health Care − State of the Art



Joachim Enax1, Helge-Otto Fabritius2, 3, Kathia Fabritius-Vilpoux3, Bennett T. Amaechi4, Frederic Meyer1, *
1 Department of Research, Dr. Kurt Wolff GmbH & Co. KG, Johanneswerkstr. 34-36, 33611 Bielefeld, Germany
2 Bionics and Materials Development, Hamm-Lippstadt University of Applied Sciences, Marker Allee 76-78, 59063 Hamm, Germany
3 Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Str. 1, 40237 Duesseldorf, Germany
4 Department of Comprehensive Dentistry, University of Texas Health Science Center at San Antonio, 703 Floyd Curl Drive, San Antonio, Texas 78229-3900, USA

Abstract

Background:

Particulate Hydroxyapatite (HAP; Ca5(PO4)3(OH)) is being increasingly used as multifunctional active ingredient in oral care. Due to its high similarity to human enamel crystallites, it is considered as a biomimetic agent.

Objective:

The aim of this narrative review is to identify the modes of action of HAP in preventive oral health care based on published studies. The outcomes are expected to improve the understanding of the effects of HAP in the oral cavity and to provide a knowledge base for future research in the field of biomimetic oral care.

Methods:

The data analyzed and discussed are primarily based on selected published scientific studies and reviews from in vivo, in situ, and in vitro studies on HAP in the field of preventive oral health care. The databases Cochrane Library, EBSCO, PubMed and SciFinder were used for literature search.

Results:

We identified different modes of action of HAP in the oral cavity. They are mainly based on (I) Physical principles (e.g. attachment of HAP-particles to the tooth surface and cleaning properties), (II) Bio-chemical principles (e.g. source of calcium and phosphate ions under acidic conditions and formation of an interface between HAP-particles and the enamel), and (III) Biological principles (e.g. HAP-particles interacting with microorganisms).

Conclusion:

Although more mechanistic studies are needed, published data show that HAP has multiple modes of action in the oral cavity. Since the effects address a wide range of oral health problems, HAP is a biomimetic agent with a broad range of applications in preventive oral health care.

Keywords: Teeth, Hydroxyapatite, Biomimetics, Caries, Periodontitis, Toothpaste.


Article Information


Identifiers and Pagination:

Year: 2019
Volume: 13
First Page: 274
Last Page: 287
Publisher Id: TODENTJ-13-274
DOI: 10.2174/1874210601913010274

Article History:

Received Date: 18/04/2019
Revision Received Date: 03/06/2019
Acceptance Date: 11/07/2019
Electronic publication date: 31/07/2019
Collection year: 2019

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© 2019 Enax et al.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


* Address correspondence to this author at the Department of Research, Dr. Kurt Wolff GmbH & Co. KG, Johanneswerkstr. 34-36, 33611 Bielefeld, Germany; Tel: +49 521 8808-6061; Fax: +49 521 8808-626064;
E-mail: frederic.meyer@drwolffgroup.com



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