Dynamic properties of bovine temporomandibular joint disks change with age

E. Tanaka, J. Aoyama, M. Tanaka, H. Murata, T. Hamada, K. Tanne

研究成果: Article査読

21 被引用数 (Scopus)


The temporomandibular joint disk exhibits morphological and biochemical age-related changes. However, the possible age-related changes of the dynamic viscoelasticity in the disk are unclear. We tested the hypothesis that the dynamic viscoelastic properties of the disk change with age. Thirty-six disks from young-adult, adult, and mature-adult cattle were used for dynamic tensile tests. In all disks, the magnitudes of the complex modulus, the storage modulus, and the loss modulus increased as the frequency increased. The mature-adult disks had higher values of these moduli than did the younger disks. The loss tangent ranged from 0.1 to 0.3, which means that the disk has relatively large elasticity and relatively small viscosity. It was concluded that both the elasticity and viscosity of the disk increase with age. This may reflect age-related changes in biochemical composition.

ジャーナルJournal of dental research
出版ステータスPublished - 2002 9月

ASJC Scopus subject areas

  • 歯科学(全般)


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