Results : The gap size between teeth and inlays made from Ni-Cr alloy was larger than that from Ag-Pd alloy and Scueptuce.The difference between them was statistically significant.

• 结果 ：银钯合金嵌体、水晶瓷嵌体与牙窝洞边缘间的间隙较小，镍铬合金嵌体与牙间的间隙较大，且有统计学意义。