| 1.06μm激光辐照牙本质光热作用的数值模拟 |
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| 引用本文： | 刘莉,李正佳.1.06μm激光辐照牙本质光热作用的数值模拟[J].四川激光,2007,28(3):86-87. |
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| 作者姓名： | 刘莉 李正佳 |
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| 作者单位： | 武汉科技学院光电子技术研究中心，华中科技大学光电子科学与工程学院 武汉 430073，武汉 430074 |
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| 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.
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| 关 键 词： | 激光 牙本质 光热作用 热扩散 理论研究 激光辐照 牙本质 光热作用 数值模拟 human transfer simulation Numerical 最佳 蚀除 机理 温度场 表面 照射 理论模型 激光对 控制 激光参数 相关 细胞坏死 |
| 文章编号： | 0253-2743（2007）03-0086-02 |
| 修稿时间： | 2007-01-25 |
Numerical simulation of opto-thermal transfer in human dentine irradiated by 1.06μm laser |
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| LIU Li,LI Zheng-jia.Numerical simulation of opto-thermal transfer in human dentine irradiated by 1.06μm laser[J].Laser Journal,2007,28(3):86-87. |
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| Authors: | LIU Li LI Zheng-jia |
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| Affiliation: | 1.Research Center of Opto- electronics Technology, wuhan Unlversity of Seience and Engineering, Wuhan 430073,China; 2. Institute of Optoeleetronics Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China |
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| Abstract: | Laser techniques have widely applied in the field of dentistry.The major concern during laser irradiation of teeth is the high potential of tissue over- heating 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 numeri- cally.The related opto-thermal mechanism was discussed and the optimum laser parameters for opto-thermal ablation of dentin were put forward. |
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| Keywords: | laser dentine opto-thermal ablation thermal diffusion theoretical investigation |
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