Katakura N, Kawakami M
Shika Rikogaku Zasshi. 1980 Oct;21(56):288-96.
The thermal and viscoelastic properties of commercial inlay waxes were investigated by measurements of JIS (Japanese Industrial Standard), differential thermal analysis, dilatometry and dynamic viscoelasticity. The crystal transition from orthorhombic to hexagonal caused by paraffin was observed in inlay waxes. The thermal expansion of waxes was influenced by crystal transition temperature. The cooling shrinkage of internal wax pattern is smaller in wax having larger expansion from 25 degrees C to 37 degrees C. The viscoelastic properties of inlay waxes shifted to low temperature region with decreasing in crystal transition temperature. The various properties of inlay waxes greatly changed at temperature of peak for loss tangent. There were some problems on measurement methods of JIS and the reexamination of thermal expansion and flow was suggested. Commercial inlay waxes, respectively, have various different properties, but from these results the qualities of waxes can not be determined so it's necessary to choose a suitable wax according to various conditions.
通过日本工业标准（JIS）测量、差示热分析、膨胀测量法和动态粘弹性测量，对市售嵌体蜡的热性能和粘弹性性能进行了研究。在嵌体蜡中观察到由石蜡引起的从正交晶系到六方晶系的晶体转变。蜡的热膨胀受晶体转变温度的影响。在25℃至37℃具有较大膨胀率的蜡中，内部蜡型的冷却收缩较小。随着晶体转变温度的降低，嵌体蜡的粘弹性性能向低温区域转变。在损耗角正切峰值温度下，嵌体蜡的各种性能发生了很大变化。JIS测量方法存在一些问题，建议重新审视热膨胀和流动性。市售嵌体蜡分别具有各种不同的性能，但根据这些结果无法确定蜡的质量，因此有必要根据各种条件选择合适的蜡。
