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Journal of Biomedical Optics

Optothermal transfer simulation in laser-irradiated human dentin
Author(s): Eduardo H. Moriyama; Renato Amaro Zangaro; Paulo Davi de Castro Lobo; Antonio G. J. Balbin Villaverde; Marcos Tadeu Tavares Pacheco; Alex Vitkin
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Paper Abstract

Laser technology has been studied as a potential replacement to the conventional dental drill. However, to prevent pulpal cell damage, information related to the safety parameters using high-power lasers in oral mineralized tissues is needed. In this study, the heat distribution profiles at the surface and subsurface regions of human dentine samples irradiated with a Nd:YAG laser were simulated using Crank-Nicolson's finite difference method for different laser energies and pulse durations. Heat distribution throughout the dentin layer, from the external dentin surface to the pulp chamber wall, were calculated in each case, to investigate the details of pulsed laser-hard dental tissue interactions. The results showed that the final temperature at the pulp chamber wall and at the dentin surface are strongly dependent on the pulse duration, exposure time, and the energy contained in each pulse.

Paper Details

Date Published: 1 April 2003
PDF: 5 pages
J. Biomed. Opt. 8(2) doi: 10.1117/1.1560000
Published in: Journal of Biomedical Optics Volume 8, Issue 2
Show Author Affiliations
Eduardo H. Moriyama, Univ. de Vale do Paraiba (Brazil)
Renato Amaro Zangaro, Univ. do Vale do Paraiba (Brazil)
Paulo Davi de Castro Lobo, Univ. do Vale do Paraiba (Brazil)
Antonio G. J. Balbin Villaverde, Univ. do Vale do Paraiba (Brazil)
Marcos Tadeu Tavares Pacheco, Univ. do Vale do Paraiba (Brazil)
Alex Vitkin, Univ. of Toronto (Canada)

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