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Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/24578

Title: Quantitative Evaluation of Simulated Enamel Demineralization and Remineralization Using Photothermal Radiometry and Modulated Luminescence
Authors: Hellen, Adam
Advisor: Mandelis, Andreas
Finer, Yoav
Department: Dentistry
Keywords: Artificial enamel caries
photothermal radiometry
modulated luminescence
quantitative diagnostics
Issue Date: 26-Jul-2010
Abstract: Detection modalities that can evaluate the early stages of dental caries are indispensable. The purpose of this thesis is to evaluate the efficacy of photothermal radiometry and modulated luminescence (PTR-LUM) to non-destructively detect and quantify simulated enamel caries. Two experiments were performed based on the PTR-LUM detection mode: back-propagation or transmission-mode. Artificial demineralized lesions were created in human molars and a subset was further exposed to an artificial remineralizing solution. PTR-LUM frequency scans were performed periodically during de/re-mineralization treatments. PTR data was fitted to a theoretical model based on optical and thermal fluxes in enamel to extract opto-thermophysical parameters. Lesion validation was performed using transverse microradiography (TMR). Optical and thermal properties changed with the development and repair of the caries lesions while theory-derived thicknesses paralleled those determined microradiographically. These trends coupled with the uniqueness-of-fit of the generated parameters illustrate the efficacy of PTR- LUM to non-destructively detect and quantify de/re-mineralized lesions.
URI: http://hdl.handle.net/1807/24578
Appears in Collections:Master
Faculty of Dentistry - Master theses

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