Abstract
Differential scanning calorimetry was used to differentiate between γ1 and γ2 phases in dental alloys. Four different types of dental amalgams were examined: conventional lathe cut alloy, conventional spheralloy, non-γ2 dispersalloy and ternary alloy (sybralloy).The results showed that the non-γ2 alloy produced a characteristic endotherm around 105°C, which is 20–30°C higher than that of the conventional alloys.This method is not only a simple means of identifying the presence of dominant γ2 phases in dental amalgams, but also serves to check the homogeneity of phase distribution in alloy particles.
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