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http://dx.doi.org/10.5395/JKACD.2009.34.5.442

THE EFFECTS OF DENTIN BONDING AGENT THICKNESS ON STRESS DISTRIBUTION OF COMPOSITE-TOOTH INTERFACE : FINITE ELEMENT METHOD  

Park, Sang-Il (Department of Conservative Dentistry, College of Dentistry, Yonsei University)
Kim, Ye-Mi (Department of Conservative Dentistry, College of Dentistry, Yonsei University)
Roh, Byoung-Duk (Department of Conservative Dentistry, College of Dentistry, Yonsei University)
Publication Information
Restorative Dentistry and Endodontics / v.34, no.5, 2009 , pp. 442-449 More about this Journal
Abstract
The aim of this study was to examine that thick dentin bonding agent application or low modulus composite restoration could reduce stresses on dentin bonding agent layer. A mandibular first premolar with abfraction lesion was modeled by finite element method. The lesion was restored by different composite resins with variable dentin bonding agent thickness ($50{\mu}m$, $100{\mu}m$, $150{\mu}m$). 170N of occlusal loading was applied buccally or lingually. Von Mises stress on dentin bonding agent layer were measured. When thickness of dentin bonding agent was increased von Mises stresses at dentin bonding agent were decreased in both composites. Lower elastic modulus composite restoration showed decreased von Mises stresses. On root dentin margin more stresses were generated than enamel margin. For occlusal stress relief at dentin boning agent layer to applicate thick dentin bonding agent or to choose low elastic modulus composite is recommended.
Keywords
Class V cavity; composite resin; dentin bonding agent; stress-distribution; finite element method;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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