Laser dental hard tissue ablation: Comparison Er-lasers and scanned ultra-short pulse laser

Issue title: Proceedings of the twelfth International Symposium on Interdisciplinary Electromagnetic, Mechanic and Biomedical Problems, ISEM Bad Gastein

Article type: Research Article

Authors: Wieger, Verena^{a; *} | Straßl, Martin^a | Wintner, Ernst^a

Affiliations: [a] Photonics Institute, Vienna University of Technology, Vienna, Austria

Correspondence: [*] Corresponding author: V. Wieger, Photonics Institute, Vienna University of Technology, Gusshausstrasse 27, A-1040 Wien, Austria. Tel.: +43 1 58801 38712; Fax: +43 1 58801 38799; E-mail: [email protected]

Abstract: Laser treatment of dentine was performed with two free-running Erbium laser systems operated at 3 W average power, and a mode-locked 12-ps Nd:vanadate laser at an average power of 3.5 W. Mean ablated volumes per laser pulse were determined by means of a three-dimensional digital evaluation method. The temporal pulse profiles of the Erbium systems was analysed to explain the ablation rate results. Additionally, the morphology of the laser treated surfaces was examined.

Keywords: Er:YAG, Er, Cr:YSGG, ultra-short pulse laser, ablation rates, laser parameters

DOI: 10.3233/JAE-2007-795

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 25, no. 1-4, pp. 635-640, 2007