Changes in dental enamel oven heated or irradiated with Er,Cr:YSGG laser. Analysis by FTIR

• Published in: Laser physics Vol. 20; no. 4; pp. 871 - 875
• Main Authors: Rabelo, J. S., Ana, P. A., Benetti, C., Valério, M. E. G., Zezell, D. M.
• Format: Journal Article
• Language: English
• Published: Dordrecht SP MAIK Nauka/Interperiodica 01.04.2010; Springer
• Subjects: Biology; Exact sciences and technology; Instruments, apparatus, components and techniques common to several branches of physics and astronomy; Laser Methods in Chemistry; Lasers; Medicine; Optical Devices; Optics; Photonics; Physics; Physics and Astronomy; Thermal instruments, apparatus and techniques; Thermometry; Caries Prevention; Laser Irradiation; Dental Enamel; Laser Physics; Laser Phys; Water; Infrared thermography; Powders; Fourier transformation; Surface temperature; Enamels; Laser irradiation; Hydroxyl
• ISSN: 1054-660X; 1555-6611
• DOI: 10.1134/S1054660X10070273

This study evaluated the change that occurs in dental enamel under action of oven heating or Er,Cr:YSGG laser irradiation aiming to obtain a structure more resistant to demineralization. Enamel powder was obtained from bovine teeth. Samples were subjected to oven heating at temperatures of 200, 400, 600, 800, and 1000°C or during laser irradiation with energy densities of 7.53, 10.95, and 13.74 J/cm 2 . The infrared thermography was used to measure the surface temperature generated in the solid samples of enamel during lasers irradiation. The samples were analyzed by Fourier transform infrared spectroscopy (FTIR), which shows changes on enamel oven heated or laser irradiated, due to treatments, related to carbonates, adsorbed water and hydroxyl content. These compositional effects were more evident in lased samples. These changes may alter the material properties such as its solubility, and decrese of demineralization that is important for caries prevention.