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BioMed Research International
Volume 2014, Article ID 938245, 8 pages
Research Article

Effect of Er,Cr:YSGG Laser Irradiation with Radial Firing Tips on Candida albicans in Experimentally Infected Root Canals

1Department of Pediatric Dentistry, Faculty of Dentistry, Near East University, Nicosia, Northern Cyprus, Mersin 10, Turkey
2Department of Medical Microbiology, Celal Bayar University, Faculty of Medicine, 45000 Manisa, Turkey

Received 28 January 2014; Revised 13 April 2014; Accepted 14 April 2014; Published 15 May 2014

Academic Editor: Andrea Scribante

Copyright © 2014 Leman Ozkan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Aim. To compare the disinfection effect of Er,Cr:YSGG laser using radial firing tips with NaOCI in root canals infected with C. albicans and to evaluate the irradiation effect on the dentinal surfaces. Material and Methods. In total seventy-six mandibular premolar teeth were used. In order to standardize the incubation and sterilization procedure, eight teeth were used. Sixty-eight of the root canals were incubated with C. albicans suspension for 72 hours. The specimens were divided into 5 experimental groups. Two groups were constituted as Group 1 was irradiated with 1.5 W laser ( ) and group 2, which was irradiated with 2 W laser ( ). Two more groups were formed as Group 3 (2 W laser ( ) and Group 4 NaOCI (5%) ( ). Group 5 ( ) did not receive any treatment. Mann-Whitney U and Kruskal-Wallis H tests were used to compare the different laser output powers. Wilcoxon Signed Ranks Test was used in order to compare the Candida cfu/ml levels according to treatment protocols ( ). Results. Both 1.5 W and 2 W laser resulted in a major reduction of C. albicans without a significant difference. The comparison of the dentin surfaces irradiated with Er,Cr:YSGG laser at two power settings resulted in similar morphological changes. However, NaOCI was found to be more effective in reduction of C. albicans than 2 W laser application. Conclusion. According to the results of the present study, the Er,Cr:YSGG laser with radial firing tips presented less antifungal effects on C. albicans in root canals of infected teeth than NaOCl solution.