Related Experiment Video
Updated: Aug 14, 2026
Development of a Noninvasive, Laser-Assisted Experimental Model of Corneal Endothelial Cell Loss
Published on: April 24, 2020
Effect of Er:YAG laser on diseased root surfaces: an in vivo study
Roberto Crespi1, Antonio Barone, Ugo Covani
1Department of Biophysical, Medical and Odontostomatological Sciences and Technologies, Medical School, University of Genova, Genova, Italy. robcresp@libero.it
Background:
The aim of the present study was to observe in vivo the effects of two different power settings of an Er:YAG laser on pockets of periodontally involved root surfaces using a scanning electron microscope (SEM).
Methods:
Thirty-two teeth with severe periodontal disease scheduled for extraction were divided into three groups: group A was irradiated with an energy of 140 mJ, 10 Hz; group B with 160 mJ 10 Hz; group C was used as controls. Morphological changes on the treated root surfaces were evaluated using SEM observations to assess laser-induced ultrastructural changes.
Results:
All surfaces treated in both groups showed a homogeneous and smooth root surface morphology. The surface alterations were very similar with both energy values used.
Conclusion:
Er:YAG laser irradiation performed with two different power settings of root surfaces in vivo showed at the SEM observation a complete absence of debris and smooth root surfaces.
