New laser-matter interaction concept to enhance hard tissue cutting efficiency

Ioana-Mihaela Rizoiu; Larry G. DeShazer

doi:10.1117/12.182949

17 August 1994 New laser-matter interaction concept to enhance hard tissue cutting efficiency

Ioana-Mihaela Rizoiu, Larry G. DeShazer

Proceedings Volume 2134, Laser-Tissue Interaction V; and Ultraviolet Radiation Hazards; (1994) https://doi.org/10.1117/12.182949
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

Human enamel and dentin were cut using a 2.8 micrometers erbium laser beam in conjunction with water spray. Ablation rates of the order of 0.14 mm³/s were achieved for both tissues at 4 W average power. An ablation threshold of 0.28 W was determined for dentin when using the water spray. When above threshold, the volume of tissue ablated per joule was discovered to be nearly constant, not related to the average laser power. Comparative microscopy between tissue irradiated with and without water spray demonstrated a lack of thermal effects when the water spray was utilized.

Citation Download Citation

Ioana-Mihaela Rizoiu and Larry G. DeShazer "New laser-matter interaction concept to enhance hard tissue cutting efficiency", Proc. SPIE 2134, Laser-Tissue Interaction V; and Ultraviolet Radiation Hazards, (17 August 1994); https://doi.org/10.1117/12.182949

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