Finite Element Analysis of Push-Out Specimens

2009 ◽  
Author(s):  
C. Androutsos ◽  
E. Oguejiofor ◽  
M.U. Hosain
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Element Analysis ◽  
Push Out

Finite element analysis and bond strength of a glass post to intraradicular dentin: Comparison between microtensile and push-out tests

2008 ◽  
Vol 24 (10) ◽  
pp. 1405-1411 ◽  
Author(s):  
Carlos J. Soares ◽  
Fernanda R. Santana ◽  
Carolina G. Castro ◽  
Paulo C.F. Santos-Filho ◽  
Paulo V. Soares ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Bond Strength ◽  
Element Analysis ◽  
Push Out

scholarly journals Effect of Resin Cement Porosity on Retention of Glass-Fiber Posts to Root Dentin: An Experimental and Finite Element Analysis

2015 ◽  
Vol 26 (6) ◽  
pp. 630-636 ◽  
Author(s):  
Natércia Rezende da Silva ◽  
Grazielle Crystine Rodrigues Aguiar ◽  
Monise de Paula Rodrigues ◽  
Aline Aredes Bicalho ◽  
Priscilla Barbosa Ferreira Soares ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Confocal Microscopy ◽  
Stress Distribution ◽  
Resin Cement ◽  
Element Analysis ◽  
Adhesive Resin ◽  
Fiber Posts ◽  
Root Dentin ◽  
Push Out

The aim of this study was to evaluate the effect of porosity of self-adhesive resin on the stress distribution, post retention and failure mode of fiber post cemented to human root dentin. Ten human central upper incisors with circular root canal were selected. They were sectioned with 15 mm and were endodontically filled. The roots were scanned using micro-CT after post space preparation for root filling remaining evaluation. Fiber posts were cemented using self-adhesive resin cement (Rely X U200, 3M-ESPE). Two 1-mm-thick slices from the cervical, medium and apical thirds were scanned for resin cement bubbles volume measurements and submitted to a push-out test (PBS). Three operators using stereomicroscopy and confocal laser microscopy classified the failure mode. Stress distributions during the push-out test were analyzed using 3D finite element analysis. PBS values (MPa) were submitted to one-way ANOVA and Tukey's post hoc tests and the failure modes using the Kappa coefficient to assess inter-operator agreement. Chi-square test was used to determine significant differences between the methods ( = 0.05). Push-out bond strength was significantly affected by the bubbles presence in all root depth (p<0.05). The stress concentration was higher when the bubbles were present. Adhesive dentin/resin cement interface failure was the most frequent type of failure. Confocal microscopy was better than stereomicroscopy for failure analysis. Bubbles generated during resin cement insertion into the root canal negatively affect the stress distribution and the bond strength. The use of confocal microscopy is recommended for failure analysis.

scholarly journals A finite element analysis of the push-out test: Influence of test conditions

1992 ◽  
Vol 26 (1) ◽  
pp. 119-130 ◽  
Author(s):  
W. J. A. Dhert ◽  
C. C. P. M. Verheyen ◽  
L. H. Braak ◽  
J. R. De Wijn ◽  
C. P. A. T. Klein ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Element Analysis ◽  
Test Conditions ◽  
Push Out
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