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Related Experiment Video

Updated: May 19, 2026

In Vitro Evaluation of The Effects Of Er,Cr:YSGG and Diode Lasers Used on Titanium Cylinder
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Management of Root Perforations Using MTA with or without Er:YAG Laser Irradiation: An In Vitro Study.

M Tielemans1, I Saloukas, D Heysselaer

  • 1Department of Dental Sciences, Faculty of Medicine, University of Liège, 4000 Liège, Belgium.

International Journal of Dentistry
|August 14, 2012
PubMed
Summary

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This study found that using Er:YAG laser irradiation before sealing root perforations with mineral trioxide aggregate (MTA) did not significantly reduce microleakage compared to conventional MTA sealing.

Area of Science:

  • Endodontics
  • Dental Materials Science
  • Laser Dentistry

Background:

  • Root perforations are challenging complications in endodontic therapy.
  • Mineral trioxide aggregate (MTA) is a common biomaterial for sealing root perforations.
  • Er:YAG laser irradiation is explored as a potential adjunct for improving sealing efficacy.

Purpose of the Study:

  • To compare the microleakage of root perforations sealed with MTA versus MTA following Er:YAG laser irradiation.
  • To evaluate the effect of Er:YAG laser conditioning on MTA sealing performance in vitro.

Main Methods:

  • An in vitro study utilizing 42 human monoroot teeth.
  • Preparation of two cavities per root, with one cavity irradiated using Er:YAG laser prior to MTA filling.
  • Thermocycling and methylene blue dye immersion to assess microleakage.

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Main Results:

  • Mean microleakage for MTA with laser irradiation was 23.91 ± 14.63%.
  • Mean microleakage for conventional MTA sealing was 25.17 ± 17.53%.
  • No statistically significant difference in microleakage was observed between the groups.

Conclusions:

  • Er:YAG laser irradiation as a dentinal conditioning method prior to MTA sealing did not significantly reduce microleakage.
  • Conventional MTA sealing remains effective for root perforations without significant improvement from laser conditioning in this study.