@article{oai:mdu.repo.nii.ac.jp:00001342,
 author = {伊藤, 充雄 and 石井, 和生 and 永沢, 栄 and 高橋, 重雄},
 issue = {3},
 journal = {松本歯学},
 month = {Dec},
 note = {application/pdf, In order to reveal the influence of laboratory temperature on the properties of phosphate bonded investment, the setting time, calorific values and the setting expansion were measured in CERAVEST and CERAMI-GOLD, which have been compounded with different refractory powder in sharps and sizes at 16℃, 23℃, and 30℃ under 50% humidity. And then, the structure of mold cavity wall was observed and the component elements of the wall were analysed by the X ray micro-analyser. Results were as follows; 1) Generaley, the setting time were increased as the laboratory temperature decreased. Setting time of CERAVEST and CERAMI-GOLD investments were 22 minutes and 10 minutes at 16℃. 2) With a rise in room temperature, the calorific value and the setting expansion were increased, and the crystal structure, which has constituted to cavity wall, became fine. CERAVEST had higher calorific value and larger setting expansion than CERAMI-GOLD. 3) The time required to achieve the maximum setting expansion was shorter with CERAVEST than with CERAMI-GOLD.},
 pages = {201--207},
 title = {リン酸塩系埋没材について(その4)作業室内温度と硬化時膨張との関係},
 volume = {11},
 year = {1985}
}