中国激光, 2012, 39 (s1): s104001, 网络出版: 2012-06-25  

Finite element simulation for laser-induced SAW propagation in tooth

Finite element simulation for laser-induced SAW propagation in tooth
作者单位
1 Department of Electronic Science and Engineering, Southeast University, Nanjing 210096, China
2 Department of Information Physics, Nanjing University of Science & Technology, Nanjing 210094, China
摘要
Abstract
Laser ultrasonic technology, a noncontact nondestructive evaluation method, can be applied to evaluating the properties of human teeth. With a finite element method, this paper studies laser induced surface acoustic wave (LSAW) characteristics propagating in human teeth. Setting up a theory model for laser-introduced surface acoustic wave (SAW) propagating in human incisors, it discusses the temperature field induced by laser irradiate in dental surface, as well as the effects of inhomogeneous enamel and early dental caries (white spot lesion) on LSAWs. Studies in this letter can provide a theoretical basis for nondestructive evaluation of human teeth with laser ultrasonic technology.

Ling Yuan, Kaihua Sun, Zhonghua Shen, Xiaowu Ni, Yiping Cui. Finite element simulation for laser-induced SAW propagation in tooth[J]. 中国激光, 2012, 39(s1): s104001. Ling Yuan, Kaihua Sun, Zhonghua Shen, Xiaowu Ni, Yiping Cui. Finite element simulation for laser-induced SAW propagation in tooth[J]. Chinese Journal of Lasers, 2012, 39(s1): s104001.

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