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Proceedings Paper

Developing consistency in enamel etching by CO2 laser
Author(s): Cesar D. Gonzalez; Kenneth L. Zakariasen
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Paper Abstract

This research was designed to ascertain which CO2 laser exposure parameters result in consistent etching of enamel. Fourteen non-carious teeth were selected and a 2 X 4 gridwork was cut into the buccal surfaces creating eight discrete windows for laser exposures. Four teeth served for the initial pilot project. Two windows were lased at each combination of exposure parameters. Laser exposures were at .01, .02, .05, or.10 sec. at 2, 5, 10, or 15 watts (W) with a model 20C Pfizer CO2 laser. A 1.0 mm focal spot was used throughout. Following SEM examinations, it became clear that etching occurred only at .05 and .10 sec. at 10 and 15 W. Ten teeth were used for the main project at .05 and .10 sec exposures at 10 and 15 W. Ten windows were lased for each combination of exposure parameters. SEM analysis was accomplished at 100X and 1,200X. Laser exposures of 10/10 at .05 sec./15 W, .10 sec./10 W and .10 sec./15 W resulted in etched enamel. Statistical analysis showed a significant difference in etching between the .05 sec. 10 W group and the higher exposure parameters.

Paper Details

Date Published: 7 September 1994
PDF: 4 pages
Proc. SPIE 2128, Laser Surgery: Advanced Characterization, Therapeutics, and Systems IV, (7 September 1994); doi: 10.1117/12.184882
Show Author Affiliations
Cesar D. Gonzalez, Marquette Univ. School of Dentistry (United States)
Kenneth L. Zakariasen, Marquette Univ. School of Dentistry (United States)


Published in SPIE Proceedings Vol. 2128:
Laser Surgery: Advanced Characterization, Therapeutics, and Systems IV
R. Rox Anderson; R. Rox Anderson, Editor(s)

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