Light intensity evaluation of laser-induced fluorescence after caries removal using an experimental caries staining agent.
OBJECTIVE
The purpose of this study was to evaluate the intensity of fluorescent light reflected from cavity wall dentin, after dentin stained by an experimental caries detecting liquid was removed.


BACKGROUND
The conventional caries detecting liquid tends to penetrate dentin too deeply. On the other hand, DIAGNOdent has gradually gained recognition and established itself as a caries detection device using a laser beam.


METHODS
An experimental caries staining liquid or the conventional caries staining liquid was applied in the same cavity to observe for differences in dye penetration. Intensity of fluorescence reflected from treated dentin was measured by DIAGNOdent.


RESULTS
The mean DIAGNOdent value after removing the tooth substance stained by the experimental liquid was 17.9+/-4.1, compared with 7.7+/-2.7 by conventional one.


CONCLUSIONS
Light intensity evaluation of laser-induced fluorescence suggested that the experimental caries detecting liquid did not penetrate the dentin which should be preserved, hence avoiding overtreatment.
Kinoshita
Jun-Ichiro
J
Department of Clinical Cariology and Endodontology, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ohta-ku, Tokyo 145-8515, Japan. juun163@aol.com
Shinomiya
Hiroshi
H
Itoh
Kazuo
K
Matsumoto
Koukichi
K
D000704:Analysis of Variance; D001672:Biocompatible Materials; D004396:Coloring Agents; D003731:Dental Caries / Q000175:diagnosis*; D003804:Dentin / Q000601:surgery*; D005453:Fluorescence; D006801:Humans; D007834:Lasers; D011108:Polymers; D011409:Propylene Glycols; D018709:Statistics, Nonparametric
D001672:Biocompatible Materials; D004396:Coloring Agents; D011108:Polymers; D011409:Propylene Glycols; C012504:polypropylene glycol