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Applied Mathematics and Mechanics

, Volume 20, Issue 10, pp 1134–1141 | Cite as

Elastic modulus of human cementum

  • Yu Delin
  • Ni Haiying
  • Gong Yikang
  • Chen Xing
Article
  • 47 Downloads

Abstract

In this paper, the elastic modulus measuring of human cementum is studied. The average value of the elastic modulus measured from 100 specimens is E=2.398±0.455 GPa. The specimens were made from incisors, canines, bicuspids, and molars. The testing was done on type AG-10TA electronic-mechanical universal material testing machine. It was verified by mathematical sttistics that the probability distribution of measured data obeys normal distribution. By the great difference in elastic moduli between cementum and dentin it is explained that 1. why more cementum grows at the root apexes; 2. the behavior of cementum must be taken into consideration when the stress analysis for teeth is carried out.

Key words

human cementum elastic modulus normal distribution 

CLC number

R318.01 

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References

  1. [1]
    Black G V. An investigation of the physical characters of the human teeth in relation to their diseases and to practical dental operations, together with the physical character of filling materials[J].Dental Cosmos, 1895,37(5):353–421.Google Scholar
  2. [2]
    Stanford J W, Paffenbarger G C, Kumpula J W, et al. Determination of some compressive properties of human enamel and dentin[J].The Journal of the American Dental Association, 1958,57(4):487–496.Google Scholar
  3. [3]
    Ye Delin, Zhao Yunfeng, Dong Huagen et al. The compressive elastic modulus measuring of Chinese prople's teeth in direction of tooth axis by resistance strian measuring technique[J].West China Journal of Stomatology, 1985,3(4):241–243. (in Chinese)Google Scholar
  4. [4]
    Wu Ruiqi, Ye Delin, Zhao Yunfeng et al. Laser speckle interferometry for measurement of human tooth elastic modulus[J].Chinese Journal of Laser, 1985,12(7):424–428. (in Chinese)Google Scholar
  5. [5]
    Peyton F A, Mahler D B, Hershenov B. Physical properties of dentin[J].Journal of Dental Research, 1952,31(2):366–370.Google Scholar
  6. [6]
    Craig R G, Peyton F A. Elastic and mechanical properties of human dentin[J].Journal of Dental Research, 1958,37(6):710–718.Google Scholar
  7. [7]
    Tyldesley W R. The mechanical properties of human enamel and dentin[J].British Dental Journal, 1959,106(8):269–278.Google Scholar
  8. [8]
    Bowen R L, Rodriguez M S, Washington D S. Tensile strength and modulus of elasticity of tooth structure and several restorative materials[J].The Journal of the American Dental Association, 1962,64(3):378–387.Google Scholar
  9. [9]
    Lehman M L. Tensile strength of human dentin[J].Journal of Dental Research, 1967,46 (1):197–201.Google Scholar
  10. [10]
    Fumio Nishimura, Kunio Okazaki, Hideo Nakamura, et al. Compressive properties of human enamel and dentin[J].The Journal of the Japanese Society of Dental Materials and Devices, 1986,5(1):71–77. (in Japanese)Google Scholar
  11. [11]
    Ye Delin, Du Chuanshi, et al. Measurement of modulus of elasticity of human enamel with resistance strain measuring technique[J].West China Journal of Stomatology, 1991,9(3):207–209. (in Chinese)Google Scholar
  12. [12]
    Stanford J W, Weigel K V, Paffenbarger G C, et al. Compressive properties of hard tooth tissues and some restorative materials [J].The Journal of the American Dental Association, 1960,60(6):746–756.Google Scholar
  13. [13]
    Craig R G, Peyton F A, Johnson D W. Compressive properties of enamel, dental cements and gold[J].Journal of Dental Research, 1961,40(5):936–945.Google Scholar
  14. [14]
    Caputo A A, Reisbick M H, Belting C M. Small specimen strain measurement by Moiré fringes[J].Journal of Dental Research, 1974,53(1):98–103.Google Scholar
  15. [15]
    Gilmore R S, Pollack R P, Katz J L. Elastic properties of bovine dentin and enamel[J].Archives of Oral Biology, 1970,15(8):787–796.CrossRefGoogle Scholar
  16. [16]
    Cao Bin, Xu Yongde.Probability Theory and Mathematical Statistics [M]. Harbin: Harbin Industrial University Press, 1993,277–280. (in Chinese)Google Scholar
  17. [17]
    Wei Zhitong, Ye Delin, Yang Jianmin et al. A testing analysis for forces in abutment tooth and alveolar bone by photoelasticity when fixed bridge being loaded[J].West China Journal of Stomatology, 1984,2(2):96–98. (in Chinese)Google Scholar

Copyright information

© Editorial Committee of Applied Mathematics and Mechanics 1999

Authors and Affiliations

  • Yu Delin
    • 1
  • Ni Haiying
    • 2
  • Gong Yikang
    • 3
  • Chen Xing
    • 4
  1. 1.Biomechanical Research LaboratorySichuan UniversityChengduP R China
  2. 2.Department of Plastics EngineeringSichuan UniversityChengduP R China
  3. 3.The Fourth People's Hospital of ChengduChengduP R China
  4. 4.The Second People's Hospital of ChengduChengduP R China

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