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Updated: Jun 26, 2026
In Vitro Evaluation of The Effects Of Er,Cr:YSGG and Diode Lasers Used on Titanium Cylinder
Published on: June 6, 2025
Possibility of root canal preparation by Er:YAG laser
Kyoko Inamoto1, Naoki Horiba, Shinpei Senda
1Department of Endodontics, School of Dentistry, Aichi Gakuin University, Aichi, Japan. kyon@dpc.agu.ac.jp
Objective:
The purpose of this study was to evaluate the cutting efficiency and morphological changes of root dentin irradiated by an Er:YAG laser in vitro.
Study Design:
Thirty-two root dentin blocks were divided into 4 groups. The irradiation conditions were as follows: Group 1 (G1): 30 mJ, 10 pps, 1 mm/s, 20 times; Group 2 (G2): 30 mJ, 10 pps, 1 mm/s, 10 times; Group 3 (G3): 30 mJ, 10 pps, 2 mm/s, 20 times; and Group 4 (G4): 30 mJ, 25 pps, 1 mm/s, 10 times. After being irradiated, the blocks were observed by mu-CT and their width and depth were measured. Moreover, SEM observations were performed.
Results:
There were significant differences between G1 and G2, between G1 and G3, between G2 and G4, and between G3 and G4 for both width and depth (P < .05). The SEM observations showed that no smear layer was present on the surface of any of the samples.
Conclusion:
These results show that the Er:YAG laser operated under the conditions used in this study is an effective tool for root canal preparation.
