A comparison of the mechanical properties of the goat temporomandibular joint disc to the mandibular condylar cartilage in unconfined compression.
A comparison of the mechanical properties of the goat temporomandibular joint disc to the mandibular condylar cartilage in unconfined compression.
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DOI：
10.4061/2011/212385
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发表时间：
2011-01-01
期刊：
影响因子：
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通讯作者：
Almarza, Alejandro J
中科院分区：
文献类型：
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作者：
Hagandora, Catherine K;Chase, Thomas W;Almarza, Alejandro J
本研究旨在比较山羊颞下颌关节（TMJ）盘和下颌髁突软骨（MCC）的压缩特性，探讨横观各向同性双相模型。从颞下颌关节盘和MCC的三个区域的mediolatively采取的样品进行了测试，在无侧限压缩应变水平范围从10%到50%，然后评估生化含量。结果表明，在20%~ 50%应变范围内，TMJ盘的切线模量显著大于MCC，其值分别为729 ± 267 ~ 2413 ± 406 kPa和363 ± 169 ~ 1677 ± 538 kPa（P <0.05）。颞下颌关节盘的胶原含量显著高于MCC，而糖胺聚糖（GAG）和DNA含量则相反。结果强调颞下颌关节的关节组织之间的根本差异。
The aim of this study was to make a comparison of the compressive properties of the goat temporomandibular joint (TMJ) disc to the mandibular condylar cartilage (MCC) and to explore the transversely isotropic biphasic model. Samples taken mediolaterally from three regions of the TMJ disc and MCC were tested in unconfined compression at strain levels ranging from 10% to 50% and then assessed for biochemical content. The results indicated that the TMJ disc exhibits a significantly greater tangent modulus than the MCC from 20% to 50% strain with values ranging from 729 ± 267 to 2413 ± 406kPa and 363 ± 169 to 1677 ± 538kPa, respectively (P < .05). The collagen content of the TMJ disc was significantly greater than the MCC, while the opposite held for the glycosaminoglycan (GAG) and DNA content. The results emphasize fundamental differences between the articulating tissues of the TMJ.