The effects of casting temperature were studied on the surface aspects and casting porosities of Ag-Pd-Au alloy cast crown.The alloy was centrifugally cast at two different temperatures, 1, 000℃ and 1, 200℃.These temperatures were selected on the basis of the casting temperature range determined by the molten alloy appearance in the previous study.The crown surface was entirely covered with dark copper and zinc oxides, and no chages were found in surface appearance by altering the casting temperature or adding flux.On the other hand, the oxides on the button surface were apparently decreased by the use of the flux only when the alloy was cast at 1, 000℃.The castings made at 1, 200℃ were characterized by thicker oxide laxers on the upper surface of the button, extensive burning of the investment on the bottom surface of the button, and marked casting porosities on the occlusal subsurface of the crown.The flux was no more effective for protecting the alloy from oxidation at 1, 200℃, although the porosities were considerably reduced.