リン酸塩系埋没材硬化時の発熱挙動とその影響 : 第 1 報硬化時の温度変化

概要

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Phosphate-bonded investments exhibit exothermic reaction during setting. The generating heat may cause expansion and/or deformation of the wax pattern embedded in the investment. In this study, the temperature change in the investment mold during setting was measured for five commercially available phosphate-bonded investments. The temperature of the investment mold began to rise a few minute after the start of mixing. The temperature curve was significantly dependent on material, ring size and mixing method. A temperature peak appeared at about 10 to 30 min. In general, the shorter the peak time, the higher the peak temperature ranging from about 35 to 80℃. They were primarily affected by the materials used. The peak temperature was increased with increase in the ring size while no consistent tendencies were found in the effects of the mixing method.
九州歯科学会の論文
1989-02-25