1．06μm激光辐照牙本质光热作用的数值模拟  

Numerical simulation of opto-thermal transfer in human dentine irradiated by 1.06μm laser

作　　者：刘莉[1] 李正佳[2] 

机构地区：[1]武汉科技学院光电子技术研究中心,武汉430073 [2]华中科技大学光电子科学与工程学院,武汉430074

出　　处：《激光杂志》2007年第3期86-87,共2页Laser Journal

基　　金：本项目为武汉市科技局晨光计划资助项目。

摘　　要：激光技术已经成为牙科应用领域中重要的治疗手段。但是激光辐照牙齿时所产生的温升容易引起牙髓腔中细胞不可逆的损伤,导致牙髓细胞坏死,因此必须对相关的激光参数加以控制。本文建立了激光对牙齿光热作用的理论模型,对不同Nd:YAG激光参数照射下牙齿表面及内部的温度场进行了数值模拟。对相关的光热机理进行了探讨,提出了光热蚀除牙齿应采用的最佳措施。Laser techniques＇have widely applied in the fleld of denistry. The major concern during laser irradiationoi teeth is the higt potential of tissue overheating resulting high temperatures that can spread in toward the dentin, causing irreversible damage to cells present in the pulp chamber and leading to cell death. The thermal interaction of Nd： YAG laser with dentin was investigated theoretically and the distribution of temperature field inside the dentin was simulated numerically. The related opto - thermal mechanism was discussed and the optimum laser parameters for opto - thermal ablation of dentin were put forward.

关 键 词：激光 牙本质 光热作用 热扩散 理论研究 

分 类 号：R318.51[医药卫生—生物医学工程]