Fracture Forces of Dentin after Surface Treatment with High Speed Drill Compared to Er:YAG and Er,Cr:YSGG Laser IrradiationReport as inadecuate




Fracture Forces of Dentin after Surface Treatment with High Speed Drill Compared to Er:YAG and Er,Cr:YSGG Laser Irradiation - Download this document for free, or read online. Document in PDF available to download.

Analytical Cellular Pathology - Volume 2016 2016, Article ID 8517947, 7 pages -

Research Article

Department of Conservative Dentistry, Periodontology and Preventive Dentistry, RWTH Aachen University Hospital, Pauwelsstrasse 30, 52074 Aachen, Germany

AALZ Aachen Dental Laser Center, Center for Biomedical Technology, RWTH Aachen Campus, Pauwelsstrasse 17, 52074 Aachen, Germany

Medical Material Science, RWTH Aachen University Hospital, Pauwelsstrasse 30, 52074 Aachen, Germany

Received 13 November 2015; Accepted 12 January 2016

Academic Editor: Kenji Yoshida

Copyright © 2016 Rene Franzen 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.

Abstract

Dental tooth restorative procedures may weaken the structural integrity of the tooth, with the possibility of leading to fracture. In this study we present findings of coronal dentin strength after different techniques of surface modification. The fracture strength of dentin beams after superficial material removal with a fine diamond bur high speed drill hand piece, Er:YAG 2.94 μm, 8 J-cm

, and Er,Cr:YSGG 2.78 μm, 7.8 J-cm

laser irradiation slightly above the ablation threshold was measured by a four-point bending apparatus. Untreated dentin beams served as a control. A total of 58 dentin beams were manufactured from sterilized human extracted molars using the coronal part of the available dentin. Mean values of fracture strength were calculated as  MPa for the control group ,  MPa for high speed drill treatment ,  MPa for Er,Cr:YSGG laser irradiation , and  MPa for Er:YAG laser irradiation . Independent Student’s -tests showed no significant difference between each two groups . Within the parameter settings and the limits of the experimental setup used in this study, both lasers systems as well as the high speed drill do not significantly weaken coronal dentin after surface treatment.





Author: Rene Franzen, Nasrin Kianimanesh, Rudolf Marx, Asma Ahmed, and Norbert Gutknecht

Source: https://www.hindawi.com/



DOWNLOAD PDF




Related documents