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Diode laser radiation and its bactericidal effect in root canal wall dentin
N Gutknecht1, D van Gogswaardt, G Conrads
1Clinic of Conservative Dentistry, Periodontology and Preventive Dentistry, Medical Faculty of the University of Aachen, Germany.
Journal of Clinical Laser Medicine & Surgery
|January 22, 2002
Summary
Diode laser radiation effectively reduced bacteria in deep root canal dentin. This laser treatment shows promise for improving endodontic treatment outcomes by targeting deep bacterial colonization.
Area of Science:
- Endodontics
- Laser Dentistry
- Microbiology
Background:
- Microbial colonization of root canal dentin can compromise endodontic treatment success.
- Conventional disinfection methods may not eliminate bacteria from deep dentinal tubules.
Purpose of the Study:
- To evaluate the antibacterial efficacy of a diode laser in deep root canal dentin.
- To assess the penetration depth of the diode laser's antibacterial effect.
Main Methods:
- Bovine dentin slices of varying thicknesses (100-500 microm) were inoculated with Enterococcus faecalis.
- An 810 nm diode laser was applied to the dentin surface.
- Bacterial reduction was quantified by colony counts after laser irradiation.
Main Results:
- A significant mean bacterial reduction of 74% was observed, even in 500-microm thick dentin slices.
- The diode laser demonstrated effectiveness in reducing bacterial load within deep dentin layers.
Conclusions:
- Diode laser irradiation is effective in reducing bacteria within deep root canal dentin.
- This technology offers a potential adjunct for enhancing bacterial elimination in endodontic therapy.