Finger W, Jørgensen K D
Scand J Dent Res. 1980 Jun;88(3):278-84. doi: 10.1111/j.1600-0722.1980.tb01226.x.
In the present investigation a gypsum-bonded investment is presented with negligible setting expansion and a thermal expansion of 1.7%. This investment can and should be used without a steel casting ring. In combination with an earlier described die-spacing technique the new investment facilitates the production of gold inlays and crowns which, independent of type, will show a suitable degree of loose-fit in or on the preparations in the patient's mouth.
在本研究中，介绍了一种石膏粘结包埋材料，其凝固膨胀可忽略不计，热膨胀率为1.7%。这种包埋材料可以且应该在不使用钢铸圈的情况下使用。与先前描述的型盒分离技术相结合，这种新型包埋材料便于制作金嵌体和全冠，无论何种类型，在患者口腔内的预备体上或其中都将呈现出合适的松动度。
