3-D Finite Element Analysis of Transient Heat Transfer and Thermal Stress in a Crowned Mandibular First Molar Tooth

2007 International Conference on Thermal Issues in Emerging Technologies: Theory and Application Pub Date : 2007-05-21 DOI:10.1109/THETA.2007.363426

I. Motawea, A. Alshorbagy, R. Ibrahim, H. Sallam

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引用次数: 4

Abstract

A three-dimensional transient thermoelastic finite element model was developed to simulate a crowned mandibular first molar tooth under thermal loading as a result of hot liquid intake in the mouth. The effect of crown materials and cement types on thermal stress distribution in a crowned tooth was studied. A single layer crown (Empress) and a double layer crown (In-Ceram) were used as model materials, representing the two extremes in strength of contemporary materials compared to porcelain fused to metal crowns. Resin, glass ionomer, and zinc phosphate cements were evaluated, representing the upper and lower limits of modulus of elasticity currently available. The temperature changes as a result of hot liquid intake were calculated. Then, the thermal stress distributions due to the temperature changes were obtained. The hot liquid was of temperature 60 degC in all prepared cases. The distribution of temperature and stress were plotted and analyzed for all cases. A comparison between different cases was made to achieve the most suitable crown and cement materials

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冠状下颌第一磨牙瞬态传热和热应力的三维有限元分析

建立了一个三维瞬态热弹性有限元模型，模拟了口腔内热液摄入对冠状下颌第一磨牙热负荷的影响。研究了冠材料和胶结物类型对冠牙热应力分布的影响。单层冠(Empress)和双层冠(in - ceram)被用作模型材料，代表了当代材料强度的两个极端，与瓷与金属冠融合在一起。评估了树脂、玻璃离聚体和磷酸锌水泥，代表了目前可用的弹性模量的上限和下限。计算了热液吸入引起的温度变化。然后，得到了温度变化引起的热应力分布。在所有制备的病例中，热液体的温度为60摄氏度。绘制并分析了各工况下的温度和应力分布。通过对不同病例的比较，得出最合适的冠和固井材料

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2007 International Conference on Thermal Issues in Emerging Technologies: Theory and Application

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