Pulse thermography for quantitative nondestructive evaluation of sound, de-mineralized and re-mineralized enamel

Masatoshi Ando; Nathan Sharp; Douglas Adams

doi:10.1117/12.914371

19 April 2012 Pulse thermography for quantitative nondestructive evaluation of sound, de-mineralized and re-mineralized enamel

Masatoshi Ando, Nathan Sharp, Douglas Adams

Author Affiliations +

Proceedings Volume 8348, Health Monitoring of Structural and Biological Systems 2012; 83480S (2012) https://doi.org/10.1117/12.914371
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2012, San Diego, California, United States

Abstract

Current limitations for diagnosing mineralization state of tooth enamel can lead to improper surgical treatments. A method is investigated by which the tooth health state is characterized according to its thermal response, which is hypothesized to be sensitive to increased porosity in enamel that is caused by demineralization. Several specimens consisting of previously extracted human teeth a re prepared by exposure to Streptococcus mutans A32-2 in trypticase-soy-borth supplemented with 5% sucrose at 37°C for 3 or 6 days to de-mineralize two 1×1mm²-windows on each tooth. One of these windows is then re-mineralized with 250 or 1,100ppm-F as NaF for 10 days by pH-cyclic-model. Pulse thermography is used to measure the thermal response of these sections as well as the sound (healthy) portions of the specimen. A spatial profile of the thermal parameters of the specimens is then extracted from the thermography data and are used to compare the sound, de-mineralized, and re-mineralized areas. Results show that the thermal parameters are sensitive to the mineralization state of the tooth and that this method has the potential to accurately and quickly characterize the mineralization state of teeth, thereby allowing future dentists to make informed decisions regarding the best treatment for teeth that have experienced demineralization.

Citation Download Citation

Masatoshi Ando, Nathan Sharp, and Douglas Adams "Pulse thermography for quantitative nondestructive evaluation of sound, de-mineralized and re-mineralized enamel", Proc. SPIE 8348, Health Monitoring of Structural and Biological Systems 2012, 83480S (19 April 2012); https://doi.org/10.1117/12.914371

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