In vivo measurement of the elastic modulus of the human periodontal ligament
In vivo measurement of the elastic modulus of the human periodontal ligament
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DOI：
10.1016/s1350-4533(01)00073-x
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发表时间：
2001-10-01
影响因子：
2.2
通讯作者：
Kobayashi, K
中科院分区：
文献类型：
--
作者：
Yoshida, N;Koga, Y;Kobayashi, K
本研究旨在测定受试者牙周膜(PDL)的弹性性质。对上颌中切牙进行了实验平移，通过施加一个穿过阻力中心的单向力，使应力或应变均匀地分布在牙周韧带中。使用磁磁传感系统测量了不同载荷量下的位移。根据载荷-位移关系，计算了弹性层合板的杨氏模数。在0~0.5N、0.5~1.0N、1.00~1.5N、0.69~0.96M、1.5~2.0N的载荷下，杨氏模量值分别约为0.12、0.25、0.44、0.69~0.96。(C)2001年IPEM。爱思唯尔科学有限公司出版。版权所有。
The present study was designated to determine the elastic properties of the periodontal ligament (PDL) in human subjects. A maxillary central incisor was experimentally translated so that stress or strain could be uniformly distributed in the PDL by applying a single force passing through the center of resistance. Displacements were measured under different magnitudes of load using a magnet-magnetic sensing system. From the load-displacement relations, Young's modulus of the PDL was calculated. The values determined were approximately 0.12 MPa under load ranging from 0 to 0.5 N, 0.25 MPa within the range of 0.5-1.0 N, 0.44 MPa under load 1.0-1.5 N, and between 0.69 and 0.96 MPa with 1.5-2.0 N. The values of Young's moduli increased almost exponentially with the increment of load due to a non-linear elasticity of the PDL. (C) 2001 IPEM. Published by Elsevier Science Ltd. All rights reserved.