Free-running and Q-switched Er:YAG laser dental cavity and composite resin restoration

H. Jelínková, T. Dostálová, M. Němec, P. Koranda, M. Miyagi, K. Iwai, Y. W. Shi, Y. Matsuura

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

The results of two types of mid-infrared Er:YAG laser intensities impacts on hard dental tissue were investigated. The Er:YAG radiation with the intensities 62 kW/cm2 or 62 MW/cm2, for the case of free-running or Q-switched pulses, respectively, was delivered into the interaction place by a cyclic olefin polymer-coated silver hollow glass waveguide (700 μm inner and 850 μm outer diameter). The lens (30 mm focal length) in delivery output focused the radiation on the polished longitudinal, from 5 to 7 mm thick, extracted tooth samples. The methods were compared from the point of prepared cavity shape (SEM), inner surface, and possibility of selective removal of carnes. Composite filling material was used to reconstruct the cavities. A figure is presented. Results of Er:YAG low (left) and high (right) intensities impacts on dentin together with the SEM photography.

Original languageEnglish
Pages (from-to)835-839
Number of pages5
JournalLaser Physics Letters
Volume4
Issue number11
DOIs
Publication statusPublished - 2007 Nov

Keywords

  • Dentistry
  • Er:YAG laser
  • Free-running
  • Medical application of lasers
  • Q-switching

ASJC Scopus subject areas

  • Instrumentation
  • Physics and Astronomy (miscellaneous)

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