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In Vitro Evaluation of The Effects Of Er,Cr:YSGG and Diode Lasers Used on Titanium Cylinder
Published on: June 6, 2025
Innovative wavelengths in endodontic treatment
Ulrich Schoop1, Wolf Kluger, Selma Dervisbegovic
1Department of Conservative Dentistry, Dental School, Medical University of Vienna, A-1090 Vienna, Währinger Strasse 25a, Austria. curd.schoop@meduniwien.ac.at
Lasers in Surgery and Medicine
|May 11, 2006
Summary
New KTP and 980 nm diode lasers effectively disinfect deep root canal dentin, reducing bacteria like E. coli and E. faecalis. These laser systems show promise for advanced endodontic procedures.
Area of Science:
- Endodontics
- Laser Dentistry
- Microbiology
Background:
- Root canal sanitation is crucial for endodontic success.
- Established lasers (Nd:YAG, Diode, Er:YAG, Er,Cr:YSGG) are effective.
- New KTP (532 nm) and 980 nm diode lasers are introduced.
Purpose of the Study:
- Evaluate antibacterial effects of KTP and 980 nm diode lasers.
- Assess impact on deep dentin layers and root canal walls.
- Compare new laser wavelengths to existing endodontic treatments.
Main Methods:
- Human premolar dentin slices inoculated with E. coli or E. faecalis.
- Indirect laser irradiation with KTP and 980 nm diode lasers at varying settings.
- Quantitative microbiologic evaluation and scanning electron microscopy (SEM).
Main Results:
- Both lasers significantly reduced E. coli and E. faecalis in dentin.
- KTP laser achieved 75% eradication of E. coli at 1 W.
- Complete eradication of E. faecalis achieved with both lasers at 1.5 W.
- No significant temperature increase correlation with bactericidal effect.
Conclusions:
- KTP and 980 nm diode lasers are suitable for disinfecting deep dentin layers.
- These new wavelengths match the efficacy of established endodontic lasers.
- Further research may integrate these lasers into standard endodontic practice.
