Premium
Dynamic compressive properties of porcine temporomandibular joint disc
Author(s) -
Tanaka Eiji,
Kikuzaki Mayu,
Hanaoka Koichi,
Tanaka Masao,
Sasaki Akiko,
Kawai Nobuhiko,
Ishino Yoshihiro,
Takeuchi Michiru,
Tanne Kazuo
Publication year - 2003
Publication title -
european journal of oral sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.802
H-Index - 93
eISSN - 1600-0722
pISSN - 0909-8836
DOI - 10.1034/j.1600-0722.2003.00066.x
Subject(s) - materials science , hysteresis , strain (injury) , composite material , amplitude , dissipation , compression (physics) , modulus , temporomandibular joint , joint (building) , compressive strength , structural engineering , dentistry , anatomy , optics , medicine , thermodynamics , physics , quantum mechanics , engineering
This study aimed to evaluate the effect of the strain frequency and amplitude on the compressive properties of the porcine temporomandibular joint disc and to determine the time‐dependent changes associated with energy dissipation. Seven discs were used for compressive cycle tests, including various frequencies and magnitudes of compressive strain. Each experiment consisted of 25 cycles of loading and unloading. Hysteresis and the instantaneous and steady moduli were calculated. All specimens showed a clear hysteresis and repeatable stress–strain relationships within 19 cycles. The hysteresis at the initial cycle ranged between 35% and 62%, and gradually decreased in subsequent cycles. The instantaneous modulus became larger when the strain frequency and the strain amplitude increased. The steady modulus was approximately one‐third of the instantaneous one. It was concluded that the disc has an energy‐dissipating function during dynamic compression.