中国儿童牙本质力学性能的实验研究

Experimental Investigation on the Mechanical Properties of Chinese Children Dentin

作者对中国１０～１４岁儿童第一前磨牙牙本质的力学性能进行了实验研究，得出牙本质的弹性模量、泊松比和抗拉强度。实验结果为不同性别的中国儿童牙本质的弹性模量、泊松比差异不大；男童略高于女童，而抗拉强度差异较大；中国儿童牙本质的力学性能与成人相比，其弹性模量、泊松比均小于成人，抗拉强度则高于成人。

Abstract This paper present the experimental investigation on the machanical properies of dentin of the first bicuspid Chinese children from ten to fourteen years old.The medulus of elasticity ,Poisson's ratio and tensive strength limit were reached.It was similar that the results of experiment show that the mechanical properies of the gender differences Chineae children dentin.The boy's properies were bigger than the girl's one.The modulus of elasticity and Poisson's ratio of children were smaller than adults one,but the tensive strength limit of children was bigger than adults one.