Compositional Changes of Enamel and Dentine after Er:YAG Laser Irradiation

Attapol Choeysuppaket; Artorn Pokaipisit; Pichet Limsuwan

doi:10.4028/www.scientific.net/AMR.93-94.529

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 93-94Compositional Changes of Enamel and Dentine after...

Compositional Changes of Enamel and Dentine after Er:YAG Laser Irradiation

Abstract:

The aim of the present study was to investigate the organic and inorganic compositions of enamel and dentine after Er:YAG laser irradiation using Fourier-transform Raman spectroscopy (FT-Raman). The enamel and dentine of extracted human teeth were irradiated by Er:YAG laser at an energy density of 29.7 J/cm2. The organic and inorganic components were evaluated from Raman spectra of untreated and laser-treated of extracted human teeth. The results showed that the Raman intensity ratio of the carbonate peak (1067 cm-1) to the phosphate peak (957 cm-1) and the organic peak (2940 cm-1) to the phosphate peak of enamel and dentine decreased after laser irradiation. Therefore, laser treatment can reduce the organic and inorganic components of human enamel and dentine.