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Shear bond strength test using different loading conditions – a finite element analysis
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Keywords

Shear bond strength
Stress distribution
Loading

How to Cite

1.
Braz R, Sinhoreti MAC, Spazzin AO, Loretto SC, Lyra AMV de C, Meira Júnior AD de. Shear bond strength test using different loading conditions – a finite element analysis. Braz. J. Oral Sci. [Internet]. 2015 Nov. 16 [cited 2024 Apr. 15];9(4):439-42. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8641727

Abstract

Aim: This study evaluated the stress distribution at the bond interface during shear bond strength testing for three loading conditions. Methods: A three-dimensional model was created of a specimen for evaluation by the shear bond strength test, using three cylindrical volumes representing the dentin, adhesive system and composite resin. A linear analysis was performed to calculate the stress distribution at the dentin-adhesive interface. Three models simulating different loading conditions were prepared: chisel, orthodontic-looped wire and stainless steel tape. Results: Chisel presented severe stress concentrations near the loading site (-10681 to 637 MPa). Wire presented stress concentrations along the radial loading axis (-382 to 216 MPa). Tape presented more uniform stress distribution (-83 to 21 MPa). Conclusions: The loading with stainless steel tape allowed more uniform stress distribution at the bond interface, and was a more reliable way to evaluate the bond with regard to the aim of the shear bond strength test.
https://doi.org/10.20396/bjos.v9i4.8641727
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The Brazilian Journal of Oral Sciences uses the Creative Commons license (CC), thus preserving the integrity of the articles in an open access environment.

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