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Proceedings Paper

Effect of the CO2 laser (9.6um) on the dental pulp in humans
Author(s): Harvey A. Wigdor; Joseph T. Walsh; Reza Mostafi
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Paper Abstract

There has been great interest in the potential use of a laser to replace the dental handpiece (drill). Ideally a laser emitting radiation that is absorbed strongly by both the water and hydroxyapatite in teeth, would be a more efficient laser. Previous investigators showed that the 9.3 and 9.6 micron wavelength bands of the CO2 laser contain hydroxyapatite absorption peaks. For this study, human patients who were to have teeth removed for either orthodontic or periodontal reasons were used. A total of 16 teeth were irradiated. The number of teeth treated per patient varied from 1 - 4. The laser used was a prototype CO2 laser (ESC Medical Systems, Yokneam, Israel). The CO2 laser emits 50 mJ 60 microsecond-long pulses of 9.6 micrometer radiation in a beam focused to a 300 micrometer diameter (i/e2) spot. The pulps in both the laser and handpiece prepared holes appeared similar and had no apparent inflammation or vascular changes. It appears from this small sample of laser treated human teeth that this laser has an equal effect to the dental pulpal tissue when compared to the dental handpiece.

Paper Details

Date Published: 24 March 2000
PDF: 6 pages
Proc. SPIE 3910, Lasers in Dentistry VI, (24 March 2000); doi: 10.1117/12.380822
Show Author Affiliations
Harvey A. Wigdor, Ravenswood Hospital Medical Ctr. (United States)
Joseph T. Walsh, Northwestern Univ. (United States)
Reza Mostafi, Univ. of Illinois College of Dentistry (United States)

Published in SPIE Proceedings Vol. 3910:
Lasers in Dentistry VI
John D. B. Featherstone; Peter Rechmann; Daniel Fried, Editor(s)

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