Enhancing caries resistance with a short-pulsed CO2 9.3 μm laser: a laboratory study (Conference Presentation)

Peter Rechmann; Beate M.T. Rechmann; William H. Groves Jr.; Charles Le; Marcia L. Rapozo-Hilo; John D. B. Featherstone

doi:10.1117/12.2224641

28 April 2016 Enhancing caries resistance with a short-pulsed CO₂ 9.3-μm laser: a laboratory study (Conference Presentation)

Peter Rechmann, Beate M.T. Rechmann, William H. Groves Jr., Charles Le, Marcia L. Rapozo-Hilo, John D. B. Featherstone

Author Affiliations +

Proceedings Volume 9692, Lasers in Dentistry XXII; 969207 (2016) https://doi.org/10.1117/12.2224641
Event: SPIE BiOS, 2016, San Francisco, California, United States

Abstract

The objective of this laboratory study was to test whether irradiation with a new 9.3µm microsecond short-pulsed CO2-laser enhances enamel caries resistance with and without additional fluoride applications. 101 human enamel samples were divided into 7 groups. Each group was treated with different laser parameters (Carbon-dioxide laser, wavelength 9.3µm, 43Hz pulse-repetition rate, pulse duration between 3μs to 7μs (1.5mJ/pulse to 2.9mJ/pulse). Using a pH-cycling model and cross-sectional microhardness testing determined the mean relative mineral loss delta Z (∆Z) for each group. The pH-cycling was performed with or without additional fluoride. The CO2 9.3μm short-pulsed laser energy rendered enamel caries resistant with and without additional fluoride use.

Conference Presentation

Citation Download Citation

Peter Rechmann, Beate M.T. Rechmann, William H. Groves Jr., Charles Le, Marcia L. Rapozo-Hilo, and John D. B. Featherstone "Enhancing caries resistance with a short-pulsed CO₂ 9.3-μm laser: a laboratory study (Conference Presentation)", Proc. SPIE 9692, Lasers in Dentistry XXII, 969207 (28 April 2016); https://doi.org/10.1117/12.2224641

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