Abstract：
: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 |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_name
J Biomechjournal_title
Journal of biomechanicsauthors
Tanaka E,Iwabuchi Y,Rego EB,Koolstra JH,Yamano E,Hasegawa T,Kawazoe A,Kawai N,Tanne Kdoi
10.1016/j.jbiomech.2007.12.012subject
Has Abstractpub_date
2008-01-01 00:00:00pages
1119-23issue
5eissn
0021-9290issn
1873-2380pii
S0021-9290(07)00556-8journal_volume
41pub_type
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