Which impression material should be poured as soon as possible after impression making?

Polysulfide polymer impression materials are known for their exceptional mechanical properties and dimensional stability. However, they are sensitive to moisture and should be poured as soon as possible after taking the impression to prevent distortion and ensure accurate reproduction of the details captured. The polymer's setting reaction occurs over a period, and if the impression is left too long before pouring, it can lead to inaccuracies due to shrinkage or loss of surface detail.

Reversible hydrocolloid, for instance, has its own specific pouring time that can vary based on its temperature and handling, and it is often recommended to be poured within a certain time frame to prevent changes in its consistency. Similarly, condensation silicones also have specific timing considerations regarding their dimensional stability after setting. Lastly, while polyether has good moisture resistance, it typically allows for a slightly longer time before pouring compared to polysulfide materials, making it less urgent in terms of immediate pouring post-impression. This illustrates why polysulfide polymer is uniquely positioned for prompt pouring after making the impression.