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Temperature Dependence of Specific Heat of Human Enamel and Dentin: An Experimental Study
International Journal of Thermophysics ( IF 2.2 ) Pub Date : 2021-07-01 , DOI: 10.1007/s10765-021-02885-y
Ahmad Soori , Farshad Kowsary , Shahin Kasraei

Knowledge about the thermal properties of human teeth is imperative for accurate understanding of heat transfer in dentistry. Despite the presence of specific heat in thermal conduction and heat transfer equations, and requiring this parameter for calculation of conductivity based on diffusivity, adequate attention has not been paid to experimental assessment of specific heat of the human enamel and dentin. Specific heat can be a temperature-dependent property. Thus, this study aimed to assess the specific heat of the human enamel, sound dentin, and carious dentin at 20 °C to 70 °C temperature (which is the realizable temperature range in dental procedures) using the differential scanning calorimetry (DSC). The results showed that the specific heat of the enamel, sound dentin and carious dentin increased with temperature rise. The specific heat of the enamel, sound dentin and carious dentin at 20 °C to 70 °C ranged from 709 J·kg−1·K−1 to 921 J·kg−1·K−1, 880 J·kg−1·K−1 to 1139 J·kg−1·K−1 and 951 J·kg−1·K−1 to 1311 J·kg−1·K−1, respectively.



中文翻译:

人牙釉质和牙本质比热的温度依赖性:实验研究

了解人类牙齿的热特性对于准确理解牙科中的热传递至关重要。尽管在热传导和传热方程中存在比热,并且需要这个参数来计算基于扩散率的电导率,但对人类牙釉质和牙本质比热的实验评估尚未给予足够的重视。比热可以是与温度有关的特性。因此,本研究旨在使用差示扫描量热法 (DSC) 评估人牙釉质、健全牙本质和龋牙本质在 20 °C 至 70 °C 温度(这是牙科手术中可实现的温度范围)下的比热。结果表明,随着温度升高,牙釉质、健全牙本质和龋牙本质的比热增加。−1 ·K -1至 921 J·kg -1 ·K -1 , 880 J·kg -1 ·K -1至 1139 J·kg -1 ·K -1和 951 J·kg -1 ·K -1分别为 1311 J·kg -1 ·K -1

更新日期:2021-07-01
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