TY - GEN
T1 - Selective preparation of hard dental tissue - Classical and laser treatments comparison
AU - Dostálová, Ta T.Jana
AU - Jelínková, Helena
AU - Němec, Michal
AU - Koranda, Petr
AU - Miyagi, Mitsunobu
AU - Iwai, Katsumasa
AU - Shi, Yi Wei
AU - Matsuura, Yuji
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2006
Y1 - 2006
N2 - For the purpose of micro-selective preparation which is a part of the modern dentistry, four various methods were examined: a removal of tissue by Er: YAG laser radiation (laser is working in free-running or Q-switching regime), preparation of tissues by ultrasonic round ball tip, and by the classical dental drilling machine using diamond round bur. In the case of laser application, 40 mJ of interaction energy in pulse 200 μs long yielding to the interaction intensity 62 kW/cm2, and 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 comparisson with the classical methods the ultrasound preparation tip (Sonixflex cariex TC, D - Sonicsys micro) and dental driller together with usual preparation burrs and standard handpiece were used. For the interaction experiment the samples of extracted human teeth and ebony 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.
AB - For the purpose of micro-selective preparation which is a part of the modern dentistry, four various methods were examined: a removal of tissue by Er: YAG laser radiation (laser is working in free-running or Q-switching regime), preparation of tissues by ultrasonic round ball tip, and by the classical dental drilling machine using diamond round bur. In the case of laser application, 40 mJ of interaction energy in pulse 200 μs long yielding to the interaction intensity 62 kW/cm2, and 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 comparisson with the classical methods the ultrasound preparation tip (Sonixflex cariex TC, D - Sonicsys micro) and dental driller together with usual preparation burrs and standard handpiece were used. For the interaction experiment the samples of extracted human teeth and ebony 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.
KW - Bur preparation
KW - Dentin
KW - Dentistry
KW - Er:YAG laser
KW - Free-running
KW - Q-switching
KW - Ultrasonic
UR - http://www.scopus.com/inward/record.url?scp=33745330435&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33745330435&partnerID=8YFLogxK
U2 - 10.1117/12.647436
DO - 10.1117/12.647436
M3 - Conference contribution
AN - SCOPUS:33745330435
SN - 0819461806
SN - 9780819461803
T3 - Progress in Biomedical Optics and Imaging - Proceedings of SPIE
BT - Lasers in Dentistry XII
T2 - Lasers in Dentristry XII
Y2 - 22 January 2006 through 22 January 2006
ER -