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Proceedings Paper

Determination of the optical parameters of dentin from spatially resolved reflectance and transmittance measurements
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Paper Abstract

Measurements of the absolute spatially resolved reflectance and transmittance from dentin slabs were performed using a HeNe laser at (lambda) equals633 mm as source and a CCD camera as detector. Solid phantom slabs were used to test the experimental setup and to enable absolute measurements. The reduced scattering and absorption coefficients were derived by applying a solution of the diffusion theory for a slab geometry as theoretical model. Monte Carlo simulations were used to investigate the validity of the diffusion solution. Compared to other biological tissues large values were found for the reduced scattering coefficient of dry dentin slabs, in which the tubuli were parallel to the slab extension. In addition, we measured a strong dependence of the optical properties on the water content of the dentin slabs. We also found that the anisotropic structure of dentin strongly influences the light propagation and, thus, the derived optical properties.

Paper Details

Date Published: 31 October 2001
PDF: 7 pages
Proc. SPIE 4432, Diagnostic Optical Spectroscopy in Biomedicine, (31 October 2001); doi: 10.1117/12.447124
Show Author Affiliations
Florian K. Forster, Univ. Ulm (Germany)
Alwin Kienle, Univ. Ulm (Germany)
Raimund Hibst, Univ. Ulm (Germany)

Published in SPIE Proceedings Vol. 4432:
Diagnostic Optical Spectroscopy in Biomedicine
Theodore G. Papazoglou; Georges A. Wagnieres, Editor(s)

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