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Microleakage of Class II composite using different etching techniques

Journal of Baghdad College of Dentistry

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Title Microleakage of Class II composite using different etching techniques
 
Creator Abdul-Ameer, Zainab M
 
Description Background: Microleakage in the gingival floor of class II composite restorations can compromise the marginal adaptation of the filling material to the cavity edges. The aim of this study was to evaluate the effect of different etching techniques on Microleakage of class II Composite filling.
Materials and methods: Sixty extracted caries-free human premolars were randomly divided into six groups
according to etching technique. In group A and B the dentin of the cavities were etched with 35% phosphoric acid gel, in group C and D the dentin of the cavities were irradiated using a 320 ?m Nd: YAG laser beam, in group E and F the dentin surfaces were initially treated with the laser and then etched as in group A and B with 35% phosphoric acid. Proximal class II cavities were prepared in all samples with the gingival floor one millimeter below the CEJ. Cavities were restored according to research protocol. The samples were subjected to 2500 thermal cycles (5-55oC), immersed in 0.5% basic fuchsine solution, embedded in epoxy resin and cut centrally. Microleakage was scored and collected data were statistically analyzed using one way analysis of variance.
Results: More microleakage was detected in group C (p0.05). Using the incremental technique significantly decreased microleakage (P
 
Publisher College of dentistry/ University of baghdad
 
Date 2013-12-29
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Format application/pdf
 
Identifier http://jbcd.uobaghdad.edu.iq/index.php/jbcd/article/view/111
 
Source Journal of Baghdad College of Dentistry; Vol 21 No 1 (2009); 46-48
2311-5270
1680-0087
 
Language eng
 
Relation http://jbcd.uobaghdad.edu.iq/index.php/jbcd/article/view/111/pdf_5
 
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