Short pulse mid-infrared radiation removal of tooth tissue

Tat'jana Dostálová M.D.; Helena Jelínková; Jan Šulc; Michal Němec; Marek Remeš

doi:10.1117/12.2077584

24 February 2015 Short pulse mid-infrared radiation removal of tooth tissue

Tat'jana Dostálová M.D., Helena Jelínková, Jan Šulc, Michal Němec, Marek Remeš

Proceedings Volume 9306, Lasers in Dentistry XXI; 930603 (2015) https://doi.org/10.1117/12.2077584
Event: SPIE BiOS, 2015, San Francisco, California, United States

Abstract

The goal of the work was the investigation of powerful Er: YSGG radiation (wavelength 2.79 um) interaction with ivory and dentin. The main goal was an investigation of powerful Er: YSGG radiation interaction with ivory and dentin. As source of radiation was used a free-running or Q-switched Er: YSGG laser generating 250 us or 100 ns long pulses with pulse energy of 123 mJ or 41 mJ, respectively. The lens with the focal length 85 mm was used for concentration of the radiation on interacting material. The ablation rate was checked for case of both above mentioned regimes as well as for the cases of without and with water cooling of interacting material. It was found that for long pulse with the energy density of 176 J/cm² the ablation rate was 0.033 mm³/J (without water cooling), while for short 100 ns with the energy density of 46 J/cm² the ablation rate was 0.012 mm³/J (with water cooling).

Citation Download Citation

Tat'jana Dostálová M.D., Helena Jelínková, Jan Šulc, Michal Němec, and Marek Remeš "Short pulse mid-infrared radiation removal of tooth tissue", Proc. SPIE 9306, Lasers in Dentistry XXI, 930603 (24 February 2015); https://doi.org/10.1117/12.2077584

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