ELASTIC MODULUS OF HUMAN CEMENTUM

Applied Mathematics and Mechanics (English Edition) ›› 1999, Vol. 20 ›› Issue (10): 1134-1141.

ELASTIC MODULUS OF HUMAN CEMENTUM

叶德临¹, 倪海鹰², 龚一康³, 陈星⁴

1. Biomechanical Research Laboratory, Sichuan University, Chengdu 610065, P.R.China;
2. Department of Plastics Engineering, Sichuan University, Chengdu 610065, P.R.China;
3. The Fourth People s Hospital of Chengdu, Chengdu 610036, P.R.China;
4. The Second People s Hospital of Chengdu, Chengdu 610017, P.R.China

收稿日期:1998-01-16 修回日期:1999-05-02 出版日期:1999-10-18 发布日期:1999-10-18
通讯作者: Chen Shanlin
基金资助:
the National Natural Science Foundation of China ( 39170241)

ELASTIC MODULUS OF HUMAN CEMENTUM

Yu Delin¹, Ni Haiying², Gong Yikang³, Chen Xing⁴

1. Biomechanical Research Laboratory, Sichuan University, Chengdu 610065, P.R.China;
2. Department of Plastics Engineering, Sichuan University, Chengdu 610065, P.R.China;
3. The Fourth People s Hospital of Chengdu, Chengdu 610036, P.R.China;
4. The Second People s Hospital of Chengdu, Chengdu 610017, P.R.China

Received:1998-01-16 Revised:1999-05-02 Online:1999-10-18 Published:1999-10-18
Supported by:
the National Natural Science Foundation of China ( 39170241)

摘要/Abstract

摘要： 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 statistics 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.

关键词: human cementum, elastic modulus, normal distribution

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 statistics 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

中图分类号:

R318.01

叶德临;倪海鹰;龚一康;陈星. ELASTIC MODULUS OF HUMAN CEMENTUM[J]. Applied Mathematics and Mechanics (English Edition), 1999, 20(10): 1134-1141.

Yu Delin;Ni Haiying;Gong Yikang;Chen Xing. ELASTIC MODULUS OF HUMAN CEMENTUM[J]. Applied Mathematics and Mechanics (English Edition), 1999, 20(10): 1134-1141.

参考文献

[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.
[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.
[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)
[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)
[5] Peyton F A, Mahler D B, Hershenov B. Physical properties of dentin[J].Journal of Dental Research,1952,31(2):366~370.
[6] Craig R G, Peyton F A. Elastic and mechanical properties of human dentin[J].Journal of Dental Research,1958,37(6):710~718.
[7] Tyldesley W R. The mechanical properties of human enamel and dentin[J]. British Dental Journal,1959,106(8):269~278.
[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.
[9] Lehman M L. Tensile strength of human dentin[J].Journal of Dental Research,1967,46(1):197~201.
[10] Fumio Nishimura, Kunio Okazaki, Hideo Nakam ura, 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)
[11] Ye Delin, Du Chuanshi, et al. M easurement 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)
[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.
[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.
[14] Caputo A A, Reisbick M H, Belting C M. Small specimen strain measurement by Moir? fringes[J]. Journal of Dental Research,1974,53(1):98~103.
[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.
[16] Cao Bin, Xu Yongde. Probability Theory and Mathematical Statistics [ M ]. Harbin: Harbin Industrial University Press, 1993, 277~ 280. ( in Chinese)
[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 Stomatolo gy, 1984, 2( 2): 96~ 98. ( in Chinese)

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