Paper Title:
Microstructure and Toughness Mechanism of Tooth
  Abstract

Tooth is a kind of biomaterial in nature. It behaves favorable strength, stiffness and fracture toughness, which are closely related to its fine microstructure. The observation of scanning electron microscope (SEM) on a mature tooth shows that the tooth is a kind of natural bioceramic composite consisting of hydroxyapatite layers and collagen protein matrix. The observation also shows that the hydroxyapatite layers consist of long and thin hydroxyapatite sheets and that all the hydroxyapatite sheets are arranged in a kind of parallel distribution. The maximum pullout energy of the hydroxyapatite sheets, which is closely related to the fracture toughness of the tooth, is investigated based on the representative model of the parallel distribution. It shows that the long and thin shape as well as the parallel distribution of the hydroxyapatite sheets increase the maximum pullout energy and enhance the fracture toughness of the tooth.

  Info
Periodical
Key Engineering Materials (Volumes 467-469)
Edited by
Dehuai Zeng
Pages
567-570
DOI
10.4028/www.scientific.net/KEM.467-469.567
Citation
B. Chen, J. Luo, Q. Yuan, J. H. Fan, "Microstructure and Toughness Mechanism of Tooth", Key Engineering Materials, Vols. 467-469, pp. 567-570, 2011
Online since
February 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Zong Wei Niu, Jian Hua Zhang, Sheng Feng Ren, Li Li, Min Gang Xu
Abstract:Theory calculation result indicates that the maximal critical content of SiCw in hydroxyapatite-SiCw composite bioceramics is 23.7%....
206
Authors: Yao Wu, Ji Yong Chen, Yu Mei Xiao, Bang Cheng Yang, Xing Dong Zhang
Abstract:It is very necessary to develop a real biomimetic compound coating of CaP with organic component and investigate quantitatively the effects...
363
Authors: Zong Wei Niu, Qing Zhi Zhao, Xiu Ting Wei
Abstract:The influence of whisker orientation on machining mechanism, material removal rate and roughness of finished surface when machining the...
61
Authors: Kun Tian, Hui Min Shuai, Xiao Min Yang
Abstract:Based on the basic theory of molecular recognition , we design a organic molecules model to induce the crystallization of hydroxyapatite to...
1054
Authors: Ping Zhao, Shuai Zhao, Tai Rong Zhao, Xue Hua Ren, Feng Wang, Xiu Na Chen
Chapter 1: Material Engineering and its Application Technology
Abstract:Hydroxyapatite whisker was the reinforcement phase to prepare whisker/calcium phosphate cement composites, which was obtained by homogeneous...
30