Fuchs P, Küfmann W
Dtsch Zahnarztl Z. 1978 Jul;33(7):450-2.
The casting processes in use today such as centrifugal casting and vacuum pressure casting were compared with one another. An effort was made to answer the question whether the occurrence of shrink cavities and the mean diameter of the grain of the alloy is dependent on the method of casting. 80 crowns were made by both processes from the baked alloys Degudent Universal, Degudent N and the trial alloy 4437 of the firm Degusa. Slice sections were examined for macro and micro-porosity and the structural appearance was evaluated by linear analysis. Statistical analysis showed that casting faults and casting structure is independent of the method used and their causes must be found in the conditions of casting and the composition of the alloy.
对如今使用的铸造工艺，如离心铸造和真空压力铸造进行了相互比较。努力回答缩孔的出现以及合金晶粒的平均直径是否取决于铸造方法这一问题。用德固赛公司的烘焙合金Degudent Universal、Degudent N以及试验合金4437通过这两种工艺制作了80个牙冠。对切片进行宏观和微观孔隙率检查，并通过线性分析评估其结构外观。统计分析表明，铸造缺陷和铸造结构与所使用的方法无关，其原因必须在铸造条件和合金成分中寻找。
