Mr. Huanbo Shen Profile

Huanbo Shen

at Zhejiang Univ

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Proceedings Article | 12 January 2018 Paper

Mueller matrix imaging study to detect the dental demineralization

Qingguang Chen, Huanbo Shen, Binqiang Wang

Proceedings Volume 10620, 1062019 (2018) https://doi.org/10.1117/12.2293574

KEYWORDS: Tissues, Teeth, Linear polarizers, Tissue optics, Backscatter, Biomedical optics, Dental caries, Colorectal cancer, Polarization, Colon

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Mueller matrix is an optical parameter invasively to reveal the structure information of anisotropic material. Dental tissue has the ordered structure including dental enamel prism and dentinal tubule. The ordered structure of teeth surface will be destroyed by demineralization. The structure information has the possibility to reflect the dental demineralization. In the paper, the experiment setup was built to obtain the Mueller matrix images based on the dual- wave plate rotation method. Two linear polarizer and two quarter-wave plate were rotated by electric control revolving stage respectively to capture 16 images at different group of polarization states. Therefore, Mueller matrix image can be calculated from the 16 images. On this basis, depolarization index, the diattenuation index and retardance index of the Mueller matrix were analyzed by Lu-Chipman polarization decomposition method. Mueller matrix images of artificial demineralized enamels at different stages were analyzed and the results show the possibility to detect the dental demineralization using Mueller matrix imaging method.

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