What should be avoided when handling or storing alginate impressions?

When handling or storing alginate impressions, it is crucial to avoid exposure to moisture. Alginate is a hydrophilic material, meaning it has an affinity for water. When exposed to moisture, alginate can absorb water, which leads to distortion of the impression. This results in a change of shape and loss of detail, making the impression unreliable for creating accurate dental models.

In contrast, keeping alginate impressions in a cool place is actually advisable, as high temperatures can accelerate the setting and drying process, which can also distort the impression. Applying pressure to alginate impressions can deform them, but it is important to note that proper handling does require some degree of careful manipulation. Flushing with water can further disrupt the impression surface and lead to inaccuracies. Thus, avoiding moisture is paramount to maintaining the integrity and accuracy of alginate impressions in dental practices.