Final answer:
A condensation silicone rubber impression should be poured within 30 minutes of its removal from the mouth to avoid any dimensional changes that could distort the final dental restoration.
Step-by-step explanation:
A condensation silicone rubber impression should be poured within 30 minutes of mouth removal to minimize distortion. Silicone impression materials are used commonly in dentistry to create accurate dental impressions, which are then used to fabricate various dental restorations. It is important to pour the impression material within this timeframe because silicone impressions begin to undergo dimensional changes due to polymerization and syneresis, which can affect the accuracy of the final dental restoration.
Additionally, waiting too long can also lead to errors in the stone model due to the evaporation of the volatile by-products present in the material.