Material properties of mandibular cortical bone in the American alligator, Alligator mississippiensis.
Material properties of mandibular cortical bone in the American alligator, Alligator mississippiensis.
复制标题
美洲短吻鳄密西西比短吻鳄下颌皮质骨的材料特性。
DOI：
10.1016/j.bone.2009.11.010
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发表时间：
2010
期刊：
影响因子：
4.1
通讯作者：
P. Dechow
中科院分区：
文献类型：
--
作者：
U. Zapata;K. Metzger;Qian Wang;R. Elsey;C. Ross;P. Dechow
本文报道了用超声波技术获得的密西西比扬子鳄幼体下颌骨的弹性材料特性。对4个新鲜扬子鳄下颌骨的舌面标本42个标本进行了弹性模量、剪切模量和泊松比的测量。这些数据表明，鳄鱼下颌皮质骨的弹性特性与哺乳动物相似，并具有正交异性。这些特性与哺乳动物颅后长骨的皮质中发现的特性最相似，在其中一个方向上骨骼最硬，在其余两个垂直方向上骨骼的硬度要小得多。这与人类和一些猴子的下颌骨不同，在人类和一些猴子的下颌骨中，骨在一个方向上的硬度最大，在另一个方向上的硬度要小得多，在第三个垂直方向上的硬度居中。这种差异暗示了垂直各向异性水平和弯曲应力之间的关系。这些弹性模数与其他脊椎动物的弹性模数的可比性表明，扬子鳄下颌骨在活体中记录到的高应变值并不是由于扬子鳄下颌骨的硬度较低所致。
This study reports the elastic material properties of cortical bone in the mandible of juvenile Alligator mississippiensis obtained by using an ultrasonic wave technique. The elastic modulus, the shear modulus, and Poisson's ratio were measured on 42 cylindrical Alligator bone specimens obtained from the lingual and facial surfaces of 4 fresh Alligator mandibles. The data suggest that the elastic properties of alligator mandibular cortical bone are similar to those found in mammals and are orthotropic. The properties most resemble those found in the cortex of mammalian postcranial long bones where the bone is most stiff in one direction and much less stiff in the two remaining orthogonal directions. This is different from cortical bone found in the mandibles of humans and some monkeys, where the bone has greatest stiffness in one direction, much less stiffness in another direction, and an intermediate amount in the third orthogonal direction. This difference suggests a relationship between levels of orthotropy and bending stress. The comparability of these elastic moduli to those of other vertebrates suggest that the high bone strain magnitudes recorded from the alligator mandible in vivo are not attributable to a lower stiffness of alligator mandibular bone.
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影响因子：
2.8
作者：
HYLANDER, WL
通讯作者：
HYLANDER, WL
影响因子：
3
作者：
HYLANDER, WL
通讯作者：
HYLANDER, WL
影响因子：
2.8
作者：
Schwartz-Dabney, CL;Dechow, PC
通讯作者：
Dechow, PC
影响因子：
2.8
作者：
Dechow, PC;Hylander, WL
通讯作者：
Hylander, WL