Abstract
Previous studies have recorded the reduction of caries-like lesions or demineralization in extracted human teeth that had been irradiated with CO 2 laser, Nd:YAG laser, and Argon laser. This study was conducted to evaluate the effects of three different cw lasers on acid resistance and demineralization of dental enamel. Human enamel was laser irradiated with either Argon, CO 2 , or Nd:YAG energy densities of 60 - 65 J/cm 2 or 120 - 130 J/cm 2 . The amount of demineralization was determined in a rotating disk assembly (0.1 M acetate buffer, pH - 4.5) for 24 hours and the results determined and plotted against the non-lased control using microradiographs and computerized imaging. The amount of dissolution of tooth structure lost to demineralization in 4.5 pH acid bath in a 24 hour period was reduced from approximately 140 microns for the unlased control to approximately 90 microns for the Argon laser and 70 microns for the CO 2 laser at 60 - 65 J/cm 2 . At 120 - 130 J/cm 2 the results were: 120 microns for the Nd:YAG, 70 microns for the Argon, and 45 microns for the CO 2 laser. This study shows that demineralization is reduced significantly in vitro when human enamel is exposed to Argon and CO 2 laser irradiation.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
