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Applied Spectroscopy

Applied Spectroscopy

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  • Vol. 54, Iss. 6 — Jun. 1, 2000
  • pp: 795–799

Caries Detection by Diode Laser Raman Spectroscopy

Wieland Hill and Verena Petrou

Applied Spectroscopy, Vol. 54, Issue 6, pp. 795-799 (2000)


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Abstract

Carious lesions can be distinguished from sound hard tooth tissues because their near-infrared Raman spectra exhibit an increased luminescence. A comparison of the ratio between luminescence and Raman band intensities for diseased and healthy areas of the tooth gives a measure for the stage of the disease. Intraoral analyses can be made in a reasonable time with the use of a diode laser, a fiber-optic Raman probe, and a compact spectrograph without moving optics. An excitation wavelength of 785 nm gives sufficient contrast between sound and carious tissue and allows a sensitive detection of the weak Raman scattering by silicon detectors.

Citation
Wieland Hill and Verena Petrou, "Caries Detection by Diode Laser Raman Spectroscopy," Appl. Spectrosc. 54, 795-799 (2000)
http://www.opticsinfobase.org/as/abstract.cfm?URI=as-54-6-795


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