TY - JOUR
T1 - Efficacy of smear layer removal at the root tip by using ethylenediaminetetraacetic acid and erbium, chromium
T2 - Yttrium, scandium, gallium garnet laser
AU - Peeters, Harry Huiz
AU - Suardita, Ketut
PY - 2011/11
Y1 - 2011/11
N2 - Introduction: The purpose of this study was to compare the efficacy of laser-driven irrigation in removing the smear layer and debriding the apical region of the root canal (the root tip) with that of ultrasonic irrigation. Methods: Forty extracted human teeth with straight single roots were randomized into 4 groups (n = 10). The specimens were shaped by using hand instruments up to a size 30/.02 file (Control, Laser 1, and Laser 2 groups) or a size 20/.02 file (Laser 3 group). During instrumentation, each canal was irrigated with 3% NaOCl and 17% ethylenediaminetetraacetic acid alternately between the use of successive files. The 4 groups of 10 teeth were processed as follows. In the Control group, teeth were irrigated with 17% ethylenediaminetetraacetic acid, and the irrigant was activated with an ultrasonic device for 60 seconds. In the Laser 1 and Laser 3 groups, the irrigant was activated with the laser for 60 seconds. In the Laser 2 group, the irrigant was activated with the laser for 30 seconds. Results: There were significant differences between the smear layer and debris scores for the Laser 1 group and those for the Control (P <.001), Laser 2 (P =.002), and Laser 3 groups (P =.012 and P =.013, respectively). Completely clean root canals were found in the Laser 1 group. Conclusions: Use of a laser with a plain fiber tip, which produces cavitation in the irrigant, has potential as an improved alternative method for removing of the smear layer from the apical region of a straight root canal.
AB - Introduction: The purpose of this study was to compare the efficacy of laser-driven irrigation in removing the smear layer and debriding the apical region of the root canal (the root tip) with that of ultrasonic irrigation. Methods: Forty extracted human teeth with straight single roots were randomized into 4 groups (n = 10). The specimens were shaped by using hand instruments up to a size 30/.02 file (Control, Laser 1, and Laser 2 groups) or a size 20/.02 file (Laser 3 group). During instrumentation, each canal was irrigated with 3% NaOCl and 17% ethylenediaminetetraacetic acid alternately between the use of successive files. The 4 groups of 10 teeth were processed as follows. In the Control group, teeth were irrigated with 17% ethylenediaminetetraacetic acid, and the irrigant was activated with an ultrasonic device for 60 seconds. In the Laser 1 and Laser 3 groups, the irrigant was activated with the laser for 60 seconds. In the Laser 2 group, the irrigant was activated with the laser for 30 seconds. Results: There were significant differences between the smear layer and debris scores for the Laser 1 group and those for the Control (P <.001), Laser 2 (P =.002), and Laser 3 groups (P =.012 and P =.013, respectively). Completely clean root canals were found in the Laser 1 group. Conclusions: Use of a laser with a plain fiber tip, which produces cavitation in the irrigant, has potential as an improved alternative method for removing of the smear layer from the apical region of a straight root canal.
KW - Cavitation
KW - EDTA
KW - debris
KW - laser-driven irrigation
KW - smear layer
UR - http://www.scopus.com/inward/record.url?scp=80054052116&partnerID=8YFLogxK
U2 - 10.1016/j.joen.2011.08.022
DO - 10.1016/j.joen.2011.08.022
M3 - Article
C2 - 22000469
AN - SCOPUS:80054052116
SN - 0099-2399
VL - 37
SP - 1585
EP - 1589
JO - Journal of Endodontics
JF - Journal of Endodontics
IS - 11
ER -