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The Scientific World Journal
Volume 2014, Article ID 578342, 6 pages
Research Article

Effects of Er:YAG Laser on Mineral Content of Sound Dentin in Primary Teeth

1Department of Pediatric Dentistry, Faculty of Dentistry, Ordu University, 52100 Ordu, Turkey
2Department of Prosthodontics, Faculty of Dentistry, Inonu University, 44280 Malatya, Turkey
3Department of Pediatric Dentistry, Faculty of Dentistry, Inonu University, 44280 Malatya, Turkey
4Department of Prosthodontics, Faculty of Dentistry, Sifa University, 35100 İzmir, Turkey
5Department of Prosthodontics, Faculty of Dentistry, Eskişehir Osmangazi University, 26040 Eskişehir, Turkey

Received 16 June 2014; Accepted 25 July 2014; Published 14 August 2014

Academic Editor: Toni Zeinoun

Copyright © 2014 Cigdem Guler 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.


The aim of the present study was to evaluate the mineral content of sound dentin in primary teeth prepared using an Er:YAG laser at two different power settings. Thirty-six primary second molars were used in this study. Three dentin slabs were obtained from each tooth, and the slabs were randomly divided into three groups: Group A, control; Group B, Er:YAG laser at 3.5 W, 175 mJ, and 20 Hz, short pulse mode; and Group C, Er:YAG laser at 4 W, 200 mJ, and 20 Hz, medium-short pulse mode. One dentin slab per group was used to evaluate the dentinal morphology and surface roughness values using SEM and profilometer, respectively. Mineral content in the dentin slabs were calculated by inductively coupled plasma-atomic emission spectrometry (ICP-AES). The data were analyzed by one-way analysis of variance and Tukey’s HSD tests. No significant differences in Ca, K, Mg, Na, and P levels or Ca/P ratio were found among the groups . SEM micrographs showed that surface irregularities increased with a higher power setting. The surface roughness after laser treatment in Group B and Group C was found to be similar, unlike Group A.