Share Email Print

Proceedings Paper

Hard-tissue ablation with pulsed CO2 lasers
Author(s): Thomas P. Ertl; Gerhard J. Mueller
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

CO2 Lasers at (lambda) equals 9.6 and 10.6 micrometers and pulse lengths in the range of 100 ns to 150 micrometers operating in multimode were used as a drilling instrument with energy densities up to 200 J/cm2. The laser light was focused perpendicularly onto the surface of 1 mm slices of dentin and enamel. Different methods of cooling were applied. Temperatures were measured during ablation with thermocouples. The quality of ablation was checked with a stereo microscope and the diameters of the ablated areas were measured. Ablation rates (mm3/s) and ablation efficiencies (mm3/J) were calculated. Best results were obtained with pulse lengths of 100 to 130 micrometers . Ablation without carbonization of the organic matrix of dentin was only possible with water or water/air spray cooling. Ablation rates of up to 0.2 mm3/s and an ablation efficiency of up to 50 X 10-3 mm3/J were reached.

Paper Details

Date Published: 21 July 1993
PDF: 6 pages
Proc. SPIE 1880, Lasers in Orthopedic, Dental, and Veterinary Medicine II, (21 July 1993); doi: 10.1117/12.148321
Show Author Affiliations
Thomas P. Ertl, Freie Univ. Berlin (Germany)
Gerhard J. Mueller, Freie Univ. Berlin (Germany)

Published in SPIE Proceedings Vol. 1880:
Lasers in Orthopedic, Dental, and Veterinary Medicine II
Dov Gal; Stephen J. O'Brien; C. T. Vangsness; Joel M. White; Harvey A. Wigdor, Editor(s)

© SPIE. Terms of Use
Back to Top