Journal
JOURNAL OF BIOMEDICAL OPTICS
Volume 14, Issue 3, Pages -Publisher
SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
DOI: 10.1117/1.3130322
Keywords
optical coherence tomography; teeth; refractive index
Funding
- National Nature Science Foundation of China [30770597]
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We describe a novel method based on optical coherence tomography (OCT) for the accurate measurement of the refractive index of in vitro human teeth. We obtain the refractive indices of enamel, dentin, and cementum to be 1.631 +/- 0.007, 1.540 +/- 0.013, and 1.582 +/- 0.010, respectively. The profile of the refractive index is readily obtained via an OCT B scan across a tooth. This method can be used to study the refractive index changes caused by dental decay and therefore has great potential for the clinical diagnosis of early dental caries. (C) 2009 Society of Photo-Optical Instrumentation Engineers. [DOI: 10.1117/1.3130322]
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