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

Florian K. Forster; Alwin Kienle; Raimund Hibst

doi:10.1117/12.447124

31 October 2001 Determination of the optical parameters of dentin from spatially resolved reflectance and transmittance measurements

Florian K. Forster, Alwin Kienle, Raimund Hibst

Author Affiliations +

Proceedings Volume 4432, Diagnostic Optical Spectroscopy in Biomedicine; (2001) https://doi.org/10.1117/12.447124
Event: European Conferences on Biomedical Optics, 2001, Munich, Germany

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.

Citation Download Citation

Florian K. Forster, Alwin Kienle, and Raimund Hibst "Determination of the optical parameters of dentin from spatially resolved reflectance and transmittance measurements", Proc. SPIE 4432, Diagnostic Optical Spectroscopy in Biomedicine, (31 October 2001); https://doi.org/10.1117/12.447124

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