18 February 2009 An automated digital microradiography system for assessing tooth demineralization
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Proceedings Volume 7162, Lasers in Dentistry XV; 71620T (2009) https://doi.org/10.1117/12.816868
Event: SPIE BiOS, 2009, San Jose, California, United States
Digital Transverse microradiography (TMR) offers several advantages over film based methods including real-time image acquisition, excellent linearity with exposure, and it does not require expensive specialized film. The purpose of this work was to demonstrate that a high-resolution digital microradiography system can be used to measure the volume percent mineral loss for sound and demineralized enamel and dentin thin sections from 150-350-µm in thickness. A custom fabricated digital microradiography system with ~ 2-µm spatial resolution consisting of a digital x-ray imaging camera, a computerized high-speed motion control system and a high-intensity copper Kα x-ray source was used to determine the volume percent mineral content of sound and demineralized tooth sections. The volume percent mineral loss was compared with cross-sectional microhardness measurements on sound extracted human teeth. The correlation between microhardness and microradiography was excellent (Pr=0.99) for section thickness ranging from 59-319-µm (n=11). The attenuation was linear with varying exposure time from 1-10 seconds. Digital TMR is an effective and rapid method for the assessment of the mineral content of enamel and dentin thin sections.
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Cynthia L. Darling, Cynthia L. Darling, Charles Q. Le, Charles Q. Le, John D. B. Featherstone, John D. B. Featherstone, Daniel Fried, Daniel Fried, } "An automated digital microradiography system for assessing tooth demineralization", Proc. SPIE 7162, Lasers in Dentistry XV, 71620T (18 February 2009); doi: 10.1117/12.816868; https://doi.org/10.1117/12.816868

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