|Table of Contents|

[1] Yang Yu, Tang Wencheng,. Elastic modulus determination at different levelsof periodontal ligament in nanoindentation [J]. Journal of Southeast University (English Edition), 2017, 33 (1): 33-38. [doi:10.3969/j.issn.1003-7985.2017.01.006]

Elastic modulus determination at different levelsof periodontal ligament in nanoindentation()

Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

2017 1
Research Field:
Biological Science and Medical Engineering
Publishing date:


Elastic modulus determination at different levelsof periodontal ligament in nanoindentation
Yang Yu Tang Wencheng
School of Mechanical Engineering, Southeast University, Nanjing 211189, China
periodontal ligament(PDL) elastic modulus nanoindentation material properties canine
In order to investigate the material properties of periodontal ligament(PDL)in different locations, the nanoindentation method is used to survey the elastic modulus of the PDL at different levels. Cadaveric specimens of human mandibular canine were obtained from 4 adult donors, 16 transverse specimens were made from the sections of cervical margin, midroot and apex using the slow cutting machine. The prepared specimens were tested in different sections(along the longitudinal direction)and different areas(in the circumferential direction). According to the Oliver-Pharr theory, the mean values of elastic modulus were calculated for each area and the differences among them were compared. In the midroot section, the average elastic modulus is ranging from 0.11 to 0.23 MPa, the changing range of the cervical margin and apex are from 0.21 to 0.53 MPa and 0.44 to 0.62 MPa, respectively. Experimental results indicate that the average elastic modulus in the midroot is lower than that in the cervical margin and apex, and relatively small changes occur among them. However, there is a large change to the elastic modulus value in the circumferential direction for the PDL.


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Biographies: Yang Yu(1988—), male, graduate; Tang Wencheng(corresponding author), male, doctor, professor, tangwc@seu.edu.cn.
Foundation item: The National Natural Science Foundation of China(No. 51305208).
Citation: Yang Yu, Tang Wencheng. Elastic modulus determination at different levels of periodontal ligament in nanoindentation[J].Journal of Southeast University(English Edition), 2017, 33(1):33-38.DOI:10.3969/j.issn.1003-7985.2017.01.006.
Last Update: 2017-03-20