1. Articles from Michael H. Le

    1-4 of 4
    1. Nondestructive Assessment of Early Tooth Demineralization Using Cross-Polarization Optical Coherence Tomography

      Nondestructive Assessment of Early Tooth Demineralization Using Cross-Polarization Optical Coherence Tomography
      New methods are needed for the nondestructive measurement of tooth demineralization and remineralization to monitor the progression of incipient caries lesions (tooth decay) for effective nonsurgical intervention and to evaluate the performance of anticaries treatments such as chemical treatments or laser irradiation. Studies have shown that optical coherence tomography (OCT) has great potential to fulfill this role since it can be used to measure the depth and severity of early lesions with an axial resolution exceeding 10 $mu$ m, it is easy to apply in vivo and it can be used to image the convoluted topography of tooth occlusal surfaces ...
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    2. Automated analysis of lesion depth and integrated reflectivity in PS-OCT scans of tooth demineralization

      Background and Objectives Several studies have demonstrated that polarization sensitive optical coherence tomography (PS-OCT) can be used to nondestructively measure the severity of subsurface demineralization in enamel and dentin, track lesion progression over time and measure remineralization. The purpose of this study was to develop methods for the automated assessment of the depth and severity of demineralization in PS-OCT scans. Materials and Methods Subsurface caries-like lesions of increasing depth and severity were produced in adjoining windows on 10 bovine enamel samples via exposure to demineralization for periods of 1-4 days. PS-OCT scans were acquired for each sample and analyzed using ...
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    3. Non-destructive measurement of demineralization & remineralization in the occlusal pits and fissures of extracted 3rd molars with PS-OCT

      Previous studies have demonstrated that Polarization Sensitive Optical Coherence Tomography (PS-OCT) can be used to image the remineralization of early artificial caries lesion on smooth enamel surfaces of human and bovine teeth. However, most new dental decay is found in the pits and fissures of th ... [Proc. SPIE 7162, 71620V (2009)] published Wed Feb 18, 2009.
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    4. Methods for calculating the severity of demineralization on tooth surfaces from PS-OCT scans

      Several studies have demonstrated that polarization sensitive optical coherence tomography (PS-OCT) can be used to nondestructively measure the severity of subsurface demineralization in enamel and dentin. The reflectivity in the polarization state orthogonal to the initial linear polarization incid ... [Proc. SPIE 7162, 71620U (2009)] published Wed Feb 18, 2009.
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    1-4 of 4
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  2. Topics in the News

    1. (4 articles) UCSF
    2. (4 articles) Michael H. Le
    3. (4 articles) Daniel S. Fried
    4. (4 articles) Cynthia L. Darling
    5. (1 articles) Hobin Kang
    6. (1 articles) Dennis J. Hsu
    7. (1 articles) Duke University
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    12. (1 articles) Tokyo Medical & Dental University
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