Modification of Hydroxyapatite Crystallization Using CO_2 Laser

摘要

To remineralize the dentine surface viz. improve the micro-hardness and acid-resistance of the surface of teeth IR laser application was concerned in this study. Experimental aims are concentrating to investigate changes of hydroxyapatite crystal structure before and after laser irradiation with characteristic absorption wavelength region around 10.6 μm. As a preliminary study for FEL application in biological field, the results we have got with the 10.6μm irradiation demonstrate that the capability of FEL of precisely deliver energy over a wide band of IR wavelength, offering control over surface modification, made it an attractive tool for further ameliorating of hydroxyapatite crystallization.