Er:YAG laser micro-preparation of hard dental tissue

Tat'jana Dostálová M.D.; Helena Jelínková; Michal Nemec; Petr Koranda; Mitsunobu Miyagi; Katsumasa Iwai; Yi-Wei Shi; Yuji Matsuura

doi:10.1117/12.698148

8 March 2007 Er:YAG laser micro-preparation of hard dental tissue

Tat'jana Dostálová M.D., Helena Jelínková, Michal Nemec, Petr Koranda, Mitsunobu Miyagi, Katsumasa Iwai, Yi-Wei Shi, Yuji Matsuura

Author Affiliations +

Proceedings Volume 6425, Lasers in Dentistry XIII; 64250G (2007) https://doi.org/10.1117/12.698148
Event: SPIE BiOS, 2007, San Jose, California, United States

Abstract

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 was used for the case of free running, and Q-switch regime, respectively. For the radiation delivery, waveguide transfer system was used. It consisted of input lens (40 mm focal length), a cyclic olefin polymer coated silver hollow glass waveguide (700/850 um diameter), and output lens (55 um focal length). For the interaction experiment the 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. The composite filling material was used to reconstruct the cavities.

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Tat'jana Dostálová M.D., Helena Jelínková, Michal Nemec, Petr Koranda, Mitsunobu Miyagi, Katsumasa Iwai, Yi-Wei Shi, and Yuji Matsuura "Er:YAG laser micro-preparation of hard dental tissue", Proc. SPIE 6425, Lasers in Dentistry XIII, 64250G (8 March 2007); https://doi.org/10.1117/12.698148

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