Shear bond strength test using different loading conditions – a finite element analysis
DOI:
https://doi.org/10.20396/bjos.v9i4.8641727Keywords:
Shear bond strength, Stress distribution, LoadingAbstract
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.Downloads
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Published
2015-11-16
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 2022 Aug. 8];9(4):439-42. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8641727
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