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Proceedings Paper

Erbium:YAG laser radiation interaction with dental tissue
Author(s): Neil M. Wannop; Mark Russell Dickinson; Terence A. King
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Paper Abstract

The ablative mechanism associated with the interaction of erbium:YAG laser radiation with dental tissue has been studied. The rates of ablation in dentine and enamel of extracted human teeth were determined and compared to a theoretical model. Ablative threshold energy densities were 10 +/- 2 and 25 +/- 8 J cm-2 and effective absorption coefficients were 380 +/- 30 and 240 +/- 40 cm-1, for dentine and enamel respectively. Using an optical probe beam, the dynamics of the ejected plume has been investigated in dentine. The mean velocity of the plume was 350 +/- 60 m s-1. Histological sections of ablations were also produced, and the extent of secondary thermal damage assessed. The implications of these results for laser ablation of dental tissue are discussed.

Paper Details

Date Published: 31 December 1993
PDF: 11 pages
Proc. SPIE 2080, Dental Applications of Lasers, (31 December 1993); doi: 10.1117/12.166186
Show Author Affiliations
Neil M. Wannop, Univ. of Manchester (United Kingdom)
Mark Russell Dickinson, Univ. of Manchester (United Kingdom)
Terence A. King, Univ. of Manchester (United Kingdom)

Published in SPIE Proceedings Vol. 2080:
Dental Applications of Lasers
Gregory B. Altshuler; Raimund Hibst, Editor(s)

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