Er: YAG laser micro-preparation of hard dental tissue

Tat'jana Dostálová, Helena Jelínková, Michal Němec, Petr Koranda, Mitsunobu Miyagi, Katsumasa Iwai, Yi Wei Shi, Yuji Matsuura

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Citations (Scopus)


Free running and Q-switch infrared Er: YAG laser radiations were compared in the case of hard tissue preparation. The interaction energy of 40 mJ in pulse 200 us long yielding to the interaction intensity 62 kW/cm2, and the energy of 20 mJ in 100 ns long pulse yielding to the interaction intensity 62 MW/cm2 were used for the case of free running, and Q-switch regime, respectively. For the radiation delivery, a waveguide transfer system was used. It consisted of an input lens (40 mm focal length), a cyclic olefin polymer-coated silver hollow glass waveguide (700/850 um diameter), and output lens (55 mm focal length). For the interaction experiment samples of the extracted human teeth cut into longitudinal sections and polished were used. The thickness of the prepared samples ranged from 5 to 7 mm. The methods were compared from the point of prepared cavity shape (SEM), inner surface, and possibility of selective removal of carries. Composite filling material was used to reconstruct the cavities.

Original languageEnglish
Title of host publicationLasers in Dentistry XIII
Publication statusPublished - 2007
EventLasers in Dentistry XIII - San Jose, CA, United States
Duration: 2007 Jan 212007 Jan 22

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
ISSN (Print)1605-7422


ConferenceLasers in Dentistry XIII
Country/TerritoryUnited States
CitySan Jose, CA


  • Bur preparation
  • Dentin
  • Dentistry
  • Er:YAG laser
  • Free-running
  • Q-switching
  • Ultrasonic


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