Developing consistency in enamel etching by CO2 laser

Cesar D. Gonzalez; Kenneth L. Zakariasen D.D.S.

doi:10.1117/12.184882

7 September 1994 Developing consistency in enamel etching by CO2 laser

Cesar D. Gonzalez, Kenneth L. Zakariasen D.D.S.

Proceedings Volume 2128, Laser Surgery: Advanced Characterization, Therapeutics, and Systems IV; (1994) https://doi.org/10.1117/12.184882
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

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.

Citation Download Citation

Cesar D. Gonzalez and Kenneth L. Zakariasen D.D.S. "Developing consistency in enamel etching by CO2 laser", Proc. SPIE 2128, Laser Surgery: Advanced Characterization, Therapeutics, and Systems IV, (7 September 1994); https://doi.org/10.1117/12.184882

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