Laser ultrasound characterization of normal and decayed teeth by measuring elastic properties of surface layers

Yasser H. El-Sharkawy; Ashraf F. ElSherif

doi:10.1117/12.868322

18 February 2011 Laser ultrasound characterization of normal and decayed teeth by measuring elastic properties of surface layers

Yasser H. El-Sharkawy, Ashraf F. ElSherif

Author Affiliations +

Proceedings Volume 7897, Optical Interactions with Tissue and Cells XXII; 78971K (2011) https://doi.org/10.1117/12.868322
Event: SPIE BiOS, 2011, San Francisco, California, United States

Abstract

We firstly investigate the mechanic and acoustic properties of human teeth by using the laser generation of surface acoustic wave (SAW) technique. The materials investigated included normal and decayed teeth, which have the same grain size and different thickness, are used as the samples. The tissue responds to the laser-induced stress by thermoelastic expansion. We can obtain the shape of acoustic pulse and the phase velocity was determined for the teeth system and extract information on the teeth thickness, density, and transverse sound velocity that could be used as diagnostic parameters.

Citation Download Citation

Yasser H. El-Sharkawy and Ashraf F. ElSherif "Laser ultrasound characterization of normal and decayed teeth by measuring elastic properties of surface layers", Proc. SPIE 7897, Optical Interactions with Tissue and Cells XXII, 78971K (18 February 2011); https://doi.org/10.1117/12.868322

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