Dynamic shear properties of the temporomandibular joint disc

E. Tanaka, K. Hanaoka, T. Van Eijden, M. Tanaka, M. Watanabe, M. Nishi, N. Kawai, H. Murata, T. Hamada, K. Tanne

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


Shear stress might be an important factor associated with fatigue failure and damage of the temporomandibular joint disc. Little information, however, is available on the dynamic behavior of the disc in shear. Since the disc is an anisotropic and viscoelastic structure, in the present study the dependency of the dynamic shear behavior on the direction and frequency of loading was examined. Ten porcine discs were used for dynamic shear tests. Shear stress was applied in both anteroposterior (A-P test) and mediolateral (M-L test) directions. The dynamic moduli increased as the loading frequency increased. The dynamic elasticity was significantly larger in the A-P test than in the M-L test, although the dynamic viscosity was similar in both tests. The present results suggest that non-linearities, compression/shear coupling, and intrinsic viscoelasticity affect the shear material behavior of the disc, which might have important implications for the transmission of load in the temporomandibular joint.

Original languageEnglish
Pages (from-to)228-231
Number of pages4
JournalJournal of dental research
Issue number3
Publication statusPublished - 2003 Mar
Externally publishedYes


  • Dynamic shear properties
  • Temporomandibular joint disc
  • Viscoelasticity

ASJC Scopus subject areas

  • Dentistry(all)


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