Effects of Aromatic Amino Acids on Growth, Fluorescence, and Color Properties of Hydroxyapatite

doi:10.13701/j.cnki.kqyxyj.2020.09.018

Abstract

Abstract: Objective: To study the effects of three aromatic amino acids (AAA) on the growth, color, and fluorescence characteristics of hydroxyapatite (HA) crystals, and to provide ideas for the development of dental color materials. Methods: The hydrothermal method was used to synthesize HA and AAA complex (HA-AAA) as test group. X-ray diffraction (XRD), Fourier infrared spectroscopy (FTIR), ultraviolet spectrophotometer (UV), color, Raman, and DIAGNOdent were used to detect the sample. Pure HA samples were synthesized in the same way as control group. The crystallinity index (CI), relative carbonate content (RCC), whiteness value W^*, Raman relative intensity (RRI), laser-induced fluorescence intensity (FI), full height at half maximum (FWHM), and DD value of DIAGNOdent were calculated and analyzed. Results: The CI and RRC values of HA-AAA were significantly lower than those of the test group, and the W^*, FI, and DD values were statistically different from those of the control group. Conclusion: AAA can inhibit the growth of HA crystals, and significantly deepen the HA color and enhance the laser-induced fluorescence.

Key words: aromatic amino acid, hydroxyapatite, crystal size, color, fluorescence

ZHANG Kainan, GUO Yaru, CAI Xinjie, JIANG Tao, WANG Yining. Effects of Aromatic Amino Acids on Growth, Fluorescence, and Color Properties of Hydroxyapatite[J]. Journal of Oral Science Research, 2020, 36(9): 879-884.

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