Reflection of laser light from a human enamel-dentin structure

Elena V. Stoykova; Dimitar G. Slavov; Tzonko Uzunov

doi:10.1117/12.425178

9 April 2001 Reflection of laser light from a human enamel-dentin structure

Elena V. Stoykova, Dimitar G. Slavov, Tzonko Uzunov

Proceedings Volume 4397, 11th International School on Quantum Electronics: Laser Physics and Applications; (2001) https://doi.org/10.1117/12.425178
Event: 11th International School on Quantum Electronics: Laser Physics and Applications, 2000, Varna, Bulgaria

Abstract

In the present work we report the results of the measurement of the angular distribution of laser light reflected from a rough tooth surface and of Monte Carlo simulation of the 3-D process of photons migration in a two-layered human enamel- dentin structure. The measured reflected patterns are as a whole asymmetric and more spread than the calculated by the simulation. The measured total diffusely reflected power reaches 3 - 20% from the irradiating power. An increase in the total absorbed energy as well as in the spread of absorption is observed below the enamel-dentin interface. The scattering anisotropy affects in a different way the absorption below the tooth surface: the highly forward peaked phase function leads to decrease of absorption just below the air-enamel boundary and rise of absorption below the enamel-dentin boundary.

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Elena V. Stoykova, Dimitar G. Slavov, and Tzonko Uzunov "Reflection of laser light from a human enamel-dentin structure", Proc. SPIE 4397, 11th International School on Quantum Electronics: Laser Physics and Applications, (9 April 2001); https://doi.org/10.1117/12.425178

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KEYWORDS

Absorption

Teeth

Scattering

Monte Carlo methods

Photons

Reflection

Anisotropy

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