Which wax is used to extend the borders of an impression tray?

Utility wax is specifically designed for modifying and extending the borders of impression trays. Its pliability when heated makes it ideal for customizing the tray to ensure a proper fit for the patient's mouth. This is crucial during the impression-taking process, as a well-adapted tray enhances the accuracy of the impression and supports the creation of a precise dental cast.

Using utility wax allows dental professionals to create a secure seal at the borders of the impression tray, reducing the risk of material leakage and providing better retention of the impression material during the procedure. This adaptability is particularly useful in cases where standard trays may not accommodate patients with unique anatomical features or in special clinical situations requiring customized adjustments.