Analysis of Reaction Products on Hydroxyapatite Created by Tooth Etchants with Different Compositions.
Journal of oral science(2023)
摘要
PURPOSE:The purpose of this study was to investigate the reaction products formed by application of three tooth etchants to hydroxyapatite.METHODS:Tooth etchants with three different compositions, designed for application to teeth before dental adhesive - " K-etchant GEL" (containing phosphoric acid), "Enamel Conditioner" (containing organic acids), and "Multi Etchant" (containing acidic monomer) - were applied to hydroxyapatite plates.RESULTS:Atomic force microscopy measurements revealed that Multi Etchant formed nano-sized particles on the hydroxyapatite. X-ray diffraction and Fourier transform infrared spectrometer analyses of the powdered hydroxyapatite indicated that Enamel Conditioner produced calcium tartrate whereas K-etchant GEL generated monetite. These results indicated that each etchant reacted with hydroxyapatite in a different way.CONCLUSION:Not only differences among the etching ability of etchants, but also differences in the reaction compounds they produce may influence bonding performance in clinical practice.
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关键词
atomic force microscopy,Fourier transform infrared,hydroxyapatite,tooth etchant,X-ray diffraction
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