title: Light intensity evaluation of laser-induced fluorescence after caries removal using an experimental caries staining agent.
abstract: 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.
authors: Department of Clinical Cariology and Endodontology, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ohta-ku, Tokyo 145-8515, Japan. juun163@aol.com
authors: Jun-Ichiro
authors: J
authors: Kinoshita
authors: Hiroshi
authors: H
authors: Shinomiya
authors: Kazuo
authors: K
authors: Itoh
authors: Koukichi
authors: K
authors: Matsumoto
mesh_terms: 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
chemical_list: D001672:Biocompatible Materials; D004396:Coloring Agents; D011108:Polymers; D011409:Propylene Glycols; C012504:polypropylene glycol