Laser radiation tooth bleaching

H. Jelínková, T. Dostálová, M. Němec, J. Šulc, P. Koranda, D. Houšová, M. Miyagi, Y. W. Shi, Y. Matsuura

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

The study describes the preclinical experience with laser-activated bleaching agent for discolored teeth. Extracted human upper central incisors were selected and in a bleaching experiment 35% hydrogen peroxide was used. Three different laser systems and halogen-light unit for activation of the bleaching agent were used: alexandrite laser (wavelength 750 nm and SHG - 375 nm), Nd:YAG laser (wavelength 1.064 μm), and Er:YAG laser (wavelength 2.94 μm). The halogen light unit was used in a standard regime. The enamel surface was analyzed in the scanning electron microscope. The method of chemical oxidation results in a 2-3 shade change in one treatment. The halogen-light unit received the same effect with shorter time of bleaching process (from 630 s to 300 s). Alexandrite laser (750 nm) and bleaching agent helped to reach the desired color shade after shorter time (400 s). Alexandrite laser (375 nm) and Nd:YAG laser had no effect on the longevity of the process of bleaching. Overheating of chemical bleaching agent was visible after Er:YAG laser activation (195 s). This effect was only local, no crack or essential surface modifications were observed.

Original languageEnglish
Pages (from-to)617-620
Number of pages4
JournalLaser Physics Letters
Volume1
Issue number12
DOIs
Publication statusPublished - 2004 Dec 1

Keywords

  • Dentistry
  • Hollow glass waveguide
  • Laser application
  • Tooth bleaching

ASJC Scopus subject areas

  • Instrumentation
  • Physics and Astronomy (miscellaneous)

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