کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
874192 | 910328 | 2008 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Dynamic shear behavior of mandibular condylar cartilage is dependent on testing direction Dynamic shear behavior of mandibular condylar cartilage is dependent on testing direction](/preview/png/874192.png)
Little information is available on the direction-dependency of shear behavior in mandibular condylar cartilage. Therefore, we tested the hypothesis that such a dependency of the dynamic shear properties is present in mandibular condylar cartilage. From each of 17 condyles, two cartilage–bone plugs were dissected and tested in a simple shear sandwich configuration under a compressive strain of 10%. Sinusoidal shear strain (frequency range: 0.01–10 Hz) was applied in the medio-lateral or antero-posterior direction with an amplitude of 1.0%, 2.0%, and 3.0%. The magnitudes of the dynamic shear moduli, as calculated from the resulting shear stress, were found to increase with applied frequency and the shear strain amplitude. The values of ∣G*∣, G′ and G″ for a medio-laterally applied shear were about 20–33% of those in the antero-posterior shear, although the loss tangent (elasticity/viscosity ratio) was almost the same. In conclusion, the present results clearly show the direction-dependent characteristic of the mandibular condylar cartilage in dynamic shear.
Journal: Journal of Biomechanics - Volume 41, Issue 5, 2008, Pages 1119–1123