Abstract

The objective is to differentiate noncavitated caries enamel through time-resolved fluorescence and to find excitation and emission parameters that can be applied in future clinical practice for detection of caries lesions that are not clearly visible to the professional. Sixteen human teeth with noncavitiated white-spot caries were selected for this work. Fluorescence intensity decay was measured by using an apparatus based on the time-correlated single-photon counting method. An optical fiber bundle was employed for sample excitation (440nm), and the fluorescence collected by the same bundle (500nm) was registered. The average lifetime for sound enamel was 7.93±0.09, 2.46±0.04, and 0.51±0.02ns, whereas for the carious enamel the lifetimes were 4.84±0.06, 1.35±0.02, and 0.16±0.01ns. It was concluded that it is possible to differentiate between carious and sound regions by time-resolved fluorescence and that, although the origin of enamel fluorescence is still uncertain, the lifetime values seem to be typical of fluorophores like collagen I.

© 2010 Optical Society of America

Full Article  |  PDF Article
Related Articles
Quantitative dental measurements by use of simultaneous frequency-domain laser infrared photothermal radiometry and luminescence

Lena Nicolaides, Chris Feng, Andreas Mandelis, and Stephen H. Abrams
Appl. Opt. 41(4) 768-777 (2002)

Studying biological tissue with fluorescence lifetime imaging: microscopy, endoscopy, and complex decay profiles

Jan Siegel, Daniel S. Elson, Stephen E. D. Webb, K. C. Benny Lee, Alexis Vlandas, Giovanni L. Gambaruto, Sandrine Lévêque-Fort, M. John Lever, Paul J. Tadrous, Gordon W. H. Stamp, Andrew L. Wallace, Ann Sandison, Tim F. Watson, Fernando Alvarez, and Paul M. W. French
Appl. Opt. 42(16) 2995-3004 (2003)

Imaging of occlusal dental caries (decay) with near-IR light at 1310-nm

Christopher M. Bühler, Patara Ngaotheppitak, and Daniel Fried
Opt. Express 13(2) 573-582 (2005)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription