Monitoring remineralization of enamel subsurface lesions by optical coherence tomography

Optical coherence tomography (OCT) is a potential clinical tool for enamel lesion monitoring. Swept-source OCT findings were compared with cross-sectional nanohardness findings of enamel. Subsurface bovine enamel lesions in three groups were subjected to (1) deionized water (control), (2) phosphoryl...

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Bibliographic Details
Published in:Journal of biomedical optics 2013-04, Vol.18 (4), p.046006-046006
Main Authors: Mandurah, Mona M, Sadr, Alireza, Shimada, Yasushi, Kitasako, Yuichi, Nakashima, Syozi, Bakhsh, Turki A, Tagami, Junji, Sumi, Yasunori
Format: Article
Language:English
Subjects:
Analysis of Variance
Animals
Calcium - chemistry
Calcium - metabolism
Cattle
Cross sections
Demineralizing
Dental Enamel - metabolism
Dental Enamel - pathology
Dental Enamel - ultrastructure
Enamels
Fluorides - chemistry
Hardness
Lesions
Linear Models
Monitoring
Nanohardness
Optical Coherence Tomography
Sound
Tomography, Optical Coherence - methods
Tooth Demineralization
Tooth Remineralization
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Summary:Optical coherence tomography (OCT) is a potential clinical tool for enamel lesion monitoring. Swept-source OCT findings were compared with cross-sectional nanohardness findings of enamel. Subsurface bovine enamel lesions in three groups were subjected to (1) deionized water (control), (2) phosphoryl oligosaccharide of calcium (POs-Ca) or (3) POs-Ca with 1 ppm fluoride for 14 days. B-scans images were obtained at 1310-nm center wavelength on sound, demineralized and remineralized areas after 4, 7, and 14 days. The specimens were processed for cross-sectional nanoindentation. Reflectivity from enamel that had increased with demineralization decreased with remineralization. An OCT attenuation coefficient parameter (μt), derived based on the Beer-Lambert law as a function of backscatter signal slope, showed a strong linear regression with integrated nanohardness of all regions (p
ISSN:1083-3668
1560-2281
DOI:10.1117/1.JBO.18.4.046006