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Related Experiment Videos

Fluorescence-aided caries excavation (FACE) compared to conventional method.

Aine M Lennon1

  • 1Department of Operative Dentistry, Preventive Dentistry and Periodontology, Georg-August-University Göttingen, Göttingen, Germany. lennon@med.uni-goettingen.de

Operative Dentistry
|July 25, 2003
PubMed
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A new fluorescence-aided caries excavation (FACE) technique uses orange-red fluorescence to detect residual caries. This method proved more effective than conventional probing in removing bacteria from cavities.

Area of Science:

  • Dentistry
  • Biomedical Engineering
  • Microbiology

Background:

  • Orange-red fluorescence in carious dentin can indicate residual caries.
  • Conventional caries excavation relies on tactile sensation to detect soft dentin.

Purpose of the Study:

  • To compare the effectiveness of a new fluorescence-aided caries excavation (FACE) technique with the conventional method.
  • To evaluate the bacterial load remaining after excavation using both techniques.

Main Methods:

  • Forty extracted teeth with occlusal dentin caries were bisected and divided into two groups.
  • The FACE group used violet light illumination and a high-pass filter for caries removal.
  • The conventional group used a sharp probe to remove soft dentin.

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Main Results:

  • Confocal Laser Scanning Microscopy (CLSM) revealed significantly fewer bacteria in FACE-excavated samples (3) compared to conventional samples (9) (p=0.037).
  • The FACE technique effectively identified and guided the removal of fluorescing carious dentin.

Conclusions:

  • Fluorescence-aided caries excavation (FACE) is a more effective method for removing residual caries than the conventional technique.
  • The FACE technique leads to a significant reduction in bacterial presence in excavated cavities.