Laser fluorescence detection of demineralization in artificial occlusal fissures

  • Zandona A
  • Analoui M
  • Schemehorn B
 et al. 
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Abstract

Laser fluorescence (LF) has been used previously to detect early smooth-surface lesions. Although its use for detection of occlusal demineralization has been implicated, it has not been demonstrated. The aim of this study was to determine whether LF could detect demineralization in the base of artificial fissures. To employ LF for detection of occlusal demineralization an apparatus was devised to direct laser light into fissures and simultaneously detect fluorescence from the base of the fissures. Three groups (n = 40/group) of differing fissure types were prepared (straight wall, converging and diverging wall) with either a sound or lesioned base. One half of each group was examined with LF and dye-enhanced LF (DELF); the other half was examined with LF, exposed to plaque, examined with LF and DELF, air-polished and examined with DELF. All images were scored twice as either(1) carious; (2) sound, or (3) undetermined, by a group of 3 examiners. For fissures without plaque, the average sensitivity was higher for DELF (0.76) than for LF (0.54) (p

Author-supplied keywords

  • caries
  • curve
  • dental plaque
  • diagnosis
  • enamel caries
  • fissures
  • incipient caries
  • invitro
  • laser fluorescence
  • longitudinal microradiography
  • ph
  • quantification
  • treatment decisions

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Authors

  • A G F Zandona

  • M Analoui

  • B R Schemehorn

  • G J Eckert

  • G K Stookey

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