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Oral Health and Preventive Dentistry



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Oral Health Prev Dent 16 (2018), No. 1     23. Feb. 2018
Oral Health Prev Dent 16 (2018), No. 1  (23.02.2018)

Page 7-19, doi:10.3290/j.ohpd.a39690, PubMed:29335686

Synthetic Hydroxyapatite as a Biomimetic Oral Care Agent
Enax, Joachim / Epple, Matthias
Purpose: Human tooth enamel consists mostly of minerals, primarily hydroxyapatite, Ca10(PO4)6(OH)2, and thus synthetic hydroxyapatite can be used as a biomimetic oral care agent. This review describes the synthesis and characterization of hydroxyapatite from a chemist's perspective and provides an overview of its current use in oral care, with a focus on dentin hypersensitivity, caries, biofilm management, erosion, and enamel lesions.
Sources: Reviews and original research papers published in English and German were included.
Results: The efficiency of synthetic hydroxyapatite in occluding open dentin tubules, resulting in a protection for sensitive teeth, has been well documented in a number of clinical studies. The first corresponding studies on caries, biofilm management and erosion have provided evidence for a positive effect of hydroxyapatite either as a main or synergistic agent in oral care products. However, more in situ and in vivo studies are needed due to the complexity of the oral milieu and to further clarify existing results.
Conclusions: Due to its biocompatibility and similarity to biologically formed hydroxyapatite in natural tooth enamel, synthetic hydroxyapatite is a promising biomimetic oral care ingredient that may extend the scope of preventive dentistry.

Keywords: biofilm management, caries, erosion, dentin hypersensitivity, synthetic hydroxyapatite