Elastic Modulus of Human Cementum

Ye Delin; Ni Haiying; Gong Yikang; Chen Xing

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Article Navigation > Applied Mathematics and Mechanics > 1999 > 20(10): 1057-1064

Ye Delin, Ni Haiying, Gong Yikang, Chen Xing. Elastic Modulus of Human Cementum[J]. Applied Mathematics and Mechanics, 1999, 20(10): 1057-1064.

Citation:

Ye Delin, Ni Haiying, Gong Yikang, Chen Xing. Elastic Modulus of Human Cementum[J]. Applied Mathematics and Mechanics, 1999, 20(10): 1057-1064.

Citation:

Ye Delin, Ni Haiying, Gong Yikang, Chen Xing. Elastic Modulus of Human Cementum[J]. Applied Mathematics and Mechanics, 1999, 20(10): 1057-1064.

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Elastic Modulus of Human Cementum

1.
Biomechanical Research Laboratory, Sichuan University, Changdu 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.
4 The Second People's Hospital of Chengdu, Chengdu 610017, P R China

Received Date: 1998-01-16
Rev Recd Date: 1999-05-02
Publish Date: 1999-10-15

Abstract

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.
- human cementum,
- elastic modulus,
- normal distribution

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References(17)

References

[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]	叶德临,赵云凤,董化根,等.用电阻应变测试技术测定中国人牙牙本质沿牙轴方向的压缩弹性模量[J].华西口腔医学杂志,1985,3(4):241～243.
[4]	吴瑞琪,叶德临,赵云凤,等.激光散斑干涉法测人牙弹性模量[J].中国激光,1985,12(7):424～428.
[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]	西村文夫,冈崎邦夫,中村英雄,野本直.人齿工ナメル质と象牙质の压缩特性[J].齿科材料．器械,1986,5(1):71～77.
[11]	叶德临,杜传诗,等.电阻应变测试技术测人牙釉质的弹性模量[J].华西口腔医学杂志,1991,9(3):207～209.
[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 Moiré 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]	曹彬,徐永德.概率论与数理统计[M].哈尔滨:哈尔滨工业大学出版社,1993,277～280.
[17]	魏治统,叶德临,杨建民,等.用光弹性方法对固定桥基牙牙槽骨受力的实验研究[J].华西口腔医学杂志,1984,2(2):96～98.