Raman imaging of carious lesions using a hollow optical fiber probe

Yokoyama Eriko, Kakino Satoko, Yuji Matsuura

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


Raman spectroscopy using a hollow optical fiber probe with a glass ball lens at the distal end is proposed for detection of early caries lesions. Raman spectroscopy on carious lesions of extracted teeth showed that the probe enables measurement with a high signal-to-noise ratio when combined with a ball lens with a high refractive index. The proposed probe and lens combination detects changes in Raman spectra caused by morphological differences between sound and carious enamel. We also obtained a high-contrast image of an early carious lesion by scanning the tooth surface with the probe.

Original languageEnglish
Pages (from-to)4227-4230
Number of pages4
JournalApplied Optics
Issue number23
Publication statusPublished - 2008 Aug 10


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