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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 36 — Dec. 20, 2010
  • pp: 6938–6951

Optothermophysical properties of demineralized human dental enamel determined using photothermally generated diffuse photon density and thermal-wave fields

Adam Hellen, Anna Matvienko, Andreas Mandelis, Yoav Finer, and Bennett T. Amaechi  »View Author Affiliations


Applied Optics, Vol. 49, Issue 36, pp. 6938-6951 (2010)
http://dx.doi.org/10.1364/AO.49.006938


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Abstract

Noninvasive dental diagnostics is a growing discipline since it has been established that early detection and quantification of tooth mineral loss can reverse caries lesions in their incipient state. A theoretical coupled diffuse photon density and thermal-wave model was developed and applied to photothermal radiometric frequency responses, fitted to experimental data using a multiparameter simplex downhill minimization algorithm for the extraction of optothermophysical properties from artificially demineralized human enamel. The aim of this study was to evaluate the reliability and robustness of the advanced fitting algorithm. The results showed a select group of optical and thermal transport parameters and thicknesses were reliably extracted from the computational fitting algorithm. Theoretically derived thicknesses were accurately predicted, within about 20% error, while the estimated error in the optical and thermal property evaluation was within the values determined from early studies using destructive analyses. The high fidelity of the theoretical model illustrates its efficacy, reliability, and applicability toward the nondestructive characterization of depthwise inhomogeneous sound enamel and complex enamel caries lesions.

© 2010 Optical Society of America

OCIS Codes
(160.4760) Materials : Optical properties
(170.1850) Medical optics and biotechnology : Dentistry
(170.5270) Medical optics and biotechnology : Photon density waves
(170.7050) Medical optics and biotechnology : Turbid media
(190.4870) Nonlinear optics : Photothermal effects
(170.6935) Medical optics and biotechnology : Tissue characterization

ToC Category:
Medical Optics and Biotechnology

History
Original Manuscript: June 10, 2010
Revised Manuscript: October 9, 2010
Manuscript Accepted: October 20, 2010
Published: December 15, 2010

Citation
Adam Hellen, Anna Matvienko, Andreas Mandelis, Yoav Finer, and Bennett T. Amaechi, "Optothermophysical properties of demineralized human dental enamel determined using photothermally generated diffuse photon density and thermal-wave fields," Appl. Opt. 49, 6938-6951 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-36-6938

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