alexa Scanning Electron Microscopy Investigation Of Enamel Surface Treated With Different Bleaching Agents
ISSN: 2161-1122

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Research Article

Scanning Electron Microscopy Investigation Of Enamel Surface Treated With Different Bleaching Agents

Kemaloglu H, Atalayin C* and Tezel H

Department of Restorative Dentistry, School of Dentistry, Ege University, Bornova, Izmir, Turkey

*Corresponding Author:
Cigdem Atalayin
Department of Restorative Dentistry
School of Dentistry, Ege University
35100 Izmir –Turkey
Tel: +9023231128 87
Fax: +902323880325
E-mail: [email protected]

Received date : February 19, 2014; Accepted date : March 03, 2014; Published date : March 05, 2014

Citation: Kemaloglu H, Atalayin C, Tezel H (2014) Scanning Electron Microscopy Investigation of Enamel Surface Treated with Different Bleaching Agents. Dentistry 4:222. doi:10.4172/2161-1122.1000222

Copyright: © 2014 Kemaloglu H, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.



Introduction: Bleaching of the discolored teeth has gained popularity in the public, but there is little information about the effects of bleaching products on tooth surface. The aim of this in vitro study was to evaluate the effects of different bleaching agents with different concentrations and activation methods on enamel surface.
Materials and Methods: Human impacted third molars (n=5) were divided into six parts and the specimens obtained from each tooth were randomly assigned to one of the six groups. Group 1: No agent was used (positive control) Group 2: 10% Carbamide Peroxide (CP) Group 3: 25% Hydrogen Peroxide (HP) + mercury metal halide light activation Group 4: 38% HP + quartz-tungsten-halogen light activation Group 5: 38% HP + diode laser activation Group 6: 37% Orthophosphoric acid (negative control) The specimens were kept in artificial saliva during the test period and then prepared for scanning electron microscopy analysis. Photomicrographs of representative areas were taken at 5000x and 10000x magnifications.
Results: There were no remarkable morphologic alterations in Group 1. Bleached groups showed alterations on surface smoothness. A slight increase in the enamel porosity occurred in Group 2. The appearance was similar to the unbleached enamel in Group 3. Mild intraprismatic structure dissolution formed with the increased porosity and concavity in Group 4. Minor alterations on surface smoothness and mildly increased porosity occurred in Group 5. Rough and uneven surface, which indicated alterations of the prismatic structure of enamel due to selective dissolution of the apatite crystals, consisted in Group 6.
Conclusion: The activation methods that shorten the contact time of the high concentrated peroxides can be useful to avoid the alterations caused by bleaching agents.


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