31 December 1993 Laser-induced autofluorescence of carious regions of human teeth and caries-involved bacteria
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Proceedings Volume 2080, Dental Applications of Lasers; (1993) https://doi.org/10.1117/12.166180
Event: Europto Biomedical Optics '93, 1993, Budapest, Hungary
Abstract
Carious regions of human teeth were investigated by means of remission-, fluorescence excitation- and fluorescence emission spectroscopy as well as time-resolved fluorescence measurements in the ns region. A detection of dental caries is possible with all of these spectroscopic methods. The peaks in measured remission- and fluorescence excitation spectra of carious regions correspond with the absorption bands of metal free porphyrins. The emission spectra and fluorescence decay kinetics indicate that protoporphyrin IX may be the main chromophore. HPLC measurement verify the existence of proto- (main component), copro- and probably Zn-protoporphyrin.
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Karsten Koenig, Raimund Hibst, Herbert Meyer, Gabriela Flemming, Herbert Schneckenburger, "Laser-induced autofluorescence of carious regions of human teeth and caries-involved bacteria", Proc. SPIE 2080, Dental Applications of Lasers, (31 December 1993); doi: 10.1117/12.166180; https://doi.org/10.1117/12.166180
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