Tooth defect analysis with laser pulse excitation and laser Doppler vibrometry: thermal analysis of the excitation

Paolo Castellini; Gian Marco Revel; Lorenzo Scalise

doi:10.1117/12.348344

19 May 1999 Tooth defect analysis with laser pulse excitation and laser Doppler vibrometry: thermal analysis of the excitation

Paolo Castellini, Gian Marco Revel, Lorenzo Scalise

Author Affiliations +

Proceedings Volume 3593, Lasers in Dentistry V; (1999) https://doi.org/10.1117/12.348344
Event: BiOS '99 International Biomedical Optics Symposium, 1999, San Jose, CA, United States

Abstract

Thermal effects caused by 532 nm Nd:YAG laser pulses on human tooth surface are investigated using an IR high frame rate (60 Hz) detector (256x 256 elements, Indium Antimonide, with 3-5 μm spectral bandwidth). Measurements of the temperature on a reference line of the tooth surface during exposure to laser pulses of 0.5 W of power, with time amplitude of 12 ns and 10 Hz of frequency repetition are performed. Images and maps of temperature of the human to the surface are shown during laser treatment. Results are discussed with particular reference to the possibility to evaluate thermal effects of pulsed lasers of frequent use in dentistry and to the application of such lasers as excitation sources for non- destructive defect analysis of human teeth by laser Doppler vibrometry.

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Paolo Castellini, Gian Marco Revel, and Lorenzo Scalise "Tooth defect analysis with laser pulse excitation and laser Doppler vibrometry: thermal analysis of the excitation", Proc. SPIE 3593, Lasers in Dentistry V, (19 May 1999); https://doi.org/10.1117/12.348344

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