Laser fluorescence assessment of the root canal using plain and conical optical fibers.

Introduction: Traditional culture-based techniques for assessing infection of the root canal system are difficult to use and prone to error. Real-time assessment of the microbial status of the root canal system using laser fluorescence would help address these limitations.

Methods: This study evaluated the performance of thin optical fibers of different diameters, with either plain or conically modified ends, connected to a KaVo KEY 3 laser with an inbuilt 655-nm laser fluorescence diagnostic system.

DIAGNOdent laser fluorescence assessment of endodontic infection.

Introduction: Real-time assessment of the microbial status of the root canal system would be useful in clinical endodontic practice for determining endpoints of biomechanical treatment. This laboratory study used an existing laser fluorescence device, the DIAGNOdent (KaVo, Biberach, Germany), in a proof-of-concept study.

Methods: Visible laser red light (wavelength 655 nm) was used to elicit fluorescence emissions in the near-infrared range from infected and uninfected root canals.