Ekstrand J, Jørgensen R B, Holland R I
J Prosthet Dent. 1985 Sep;54(3):349-55. doi: 10.1016/0022-3913(85)90548-7.
The susceptibility of amalgam to deviations in the preparation procedure produced an overall trend for both the setting dimensional stability and the number of porosities. The dimensional stability of ANA 2000 was the least affected by the deviations, while ANA 68 exhibited low susceptibility to the deviations when porosities are concerned. Lowered condensation pressure usually increased both the setting expansion and the number of porosities, and vice versa. Dispersalloy exhibited an increased number of porosities with both higher and lower condensation pressure. Except for ANA 2000, undertrituration caused increased expansion and porosities, while overtrituration resulted in increased contraction but minor effects on porosities. Lower mercury/alloy ratio increased the setting expansion and the number of porosities, while the response to a higher ratio was relatively small with the exception of a markedly increased setting expansion for ANA 68.
汞合金对制备过程中偏差的敏感性导致了凝固尺寸稳定性和孔隙数量的总体趋势。ANA 2000的尺寸稳定性受偏差影响最小，而在孔隙方面，ANA 68对偏差的敏感性较低。降低的压缩压力通常会增加凝固膨胀和孔隙数量，反之亦然。Dispersalloy在较高和较低压缩压力下孔隙数量都会增加。除ANA 2000外，研磨不足会导致膨胀和孔隙增加，而研磨过度会导致收缩增加，但对孔隙的影响较小。较低的汞/合金比例会增加凝固膨胀和孔隙数量，而除ANA 68凝固膨胀显著增加外，对较高比例的反应相对较小。
