1. Articles from Ikumi Wada

    1-4 of 4
    1. Optical analysis of enamel and dentin caries in relation to mineral density using swept-source optical coherence tomography

      Optical analysis of enamel and dentin caries in relation to mineral density using swept-source optical coherence tomography

      The aim of this study was to evaluate the signal intensity and signal attenuation of swept source optical coherence tomography (SS-OCT) for dental caries in relation to the variation of mineral density. SS-OCT observation was performed on the enamel and dentin artificial demineralization and on natural caries. The artificial caries model on enamel and dentin surfaces was created using Streptococcus mutans biofilms incubated in an oral biofilm reactor. The lesions were centrally cross sectioned and SS-OCT scans were obtained in two directions to construct a three-dimensional data set, from the lesion surface (sagittal scan) and parallel to the lesion surface ...

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    2. Clinical assessment of non carious cervical lesion using swept-source optical coherence tomography

      Clinical assessment of non carious cervical lesion using swept-source optical coherence tomography

      ( A ) We determined the attenuation coeffcient (μ t ) threshold of SS-OCT signal for the detection of demineralization (1.21) from in vitro study. DEM: demineralized dentin, sound: sound dentin. ( B ) Using the μ t threshold, we observed NCCLs in vivo to detect the demineralization in cervical dentin. SS-OCT scanning was performed along the red line. ( C ) SS-OCT image obtained along the red line in B. In SS-OCT, brightness of dentin beneath the NCCL was increased (arrow) compared with intact zone. The cervical dentin was slightly demineralized (μ t : 1.25). e: enamel, d: dentin, g: gingiva. Non-carious cervical lesions (NCCLs) involve various forms ...

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    3. Detection of occlusal caries in primary teeth using swept source optical coherence tomography

      Detection of occlusal caries in primary teeth using swept source optical coherence tomography

      This study aimed to investigate swept source optical coherence tomography (SS-OCT) as a detecting tool for occlusal caries in primary teeth. At the in vitro part of the study, 38 investigation sites of occlusal fissures (noncavitated and cavitated) were selected from 26 extracted primary teeth and inspected visually using conventional dental equipment by six examiners without any magnification. SS-OCT cross-sectional images at 1330-nm center wavelength were acquired on the same locations. The teeth were then sectioned at the investigation site and directly viewed under a confocal laser scanning microscope (CLSM) by two experienced examiners. The presence and extent of caries ...

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    4. Noninvasive cross-sectional imaging of proximal caries using swept-source optical coherence tomography (SS-OCT) in vivo

      Noninvasive cross-sectional imaging of proximal caries using swept-source optical coherence tomography (SS-OCT) in vivo

      The aim of this study was to determine the diagnostic accuracy of swept-source optical coherent tomography (SS-OCT) in detecting and estimating the depth of proximal caries in posterior teeth in vivo. SS-OCT images and bitewing radiographs were obtained from 86 proximal surfaces of 53 patients. Six examiners scored the locations according to a caries lesion depth scale (0–4) using SS-OCT and the radiographs. The results were compared with clinical observations obtained after the treatment. SS-OCT could detect the presence of proximal caries in tomograms that were synthesized based on the backscatter signal obtained from the proximal carious lesion through ...

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    1-4 of 4
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  2. Topics in the News

    1. (4 articles) National Center for Geriatrics and Gerontology in Japan
    2. (4 articles) Tokyo Medical & Dental University
    3. (4 articles) Yasunori Sumi
    4. (4 articles) Junji Tagami
    5. (4 articles) Yasushi Shimada
    6. (4 articles) Alireza Sadr
    7. (1 articles) Syozi Nakashima
    8. (1 articles) British Columbia Cancer Agency
    9. (1 articles) Shanghai Jiao Tong University
    10. (1 articles) Singapore Eye Research Institute
    11. (1 articles) Simon Fraser University
    12. (1 articles) Columbia University
    13. (1 articles) Stephen Lam
    14. (1 articles) Pierre M. Lane
    15. (1 articles) Tien Yin Wong
    16. (1 articles) Giuseppe Querques
    17. (1 articles) Francesco Bandello
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    Noninvasive cross-sectional imaging of proximal caries using swept-source optical coherence tomography (SS-OCT) in vivo Detection of occlusal caries in primary teeth using swept source optical coherence tomography Clinical assessment of non carious cervical lesion using swept-source optical coherence tomography Optical analysis of enamel and dentin caries in relation to mineral density using swept-source optical coherence tomography Line-field confocal optical coherence tomography-Practical applications in dermatology and comparison with established imaging methods Optical coherence tomography detection of changes in inner retinal and choroidal thicknesses in patients with early retinitis pigmentosa Feasibility of combined optical coherence tomography and autofluorescence imaging for visualization of needle biopsy placement Characterization of microvascular tortuosity in retinal vein occlusion utilizing optical coherence tomography angiography Evaluation of retinochoroidal tissues in third trimester pregnants: An optical coherence tomography angiography study Evaluation of retinal and choroidal variations in thyroid-associated ophthalmopathy using optical coherence tomography angiography OCTA Study: Retinal Vascular Changes in COVID19 Patients DIABETIC MACULAR ISCHEMIA: Correlation of Retinal Vasculature Changes by Optical Coherence Tomography Angiography and Functional Deficit