What is applied over a stockinette when applying a cast?

When applying a cast, the correct material that is typically applied over a stockinette is plaster. Plaster has been traditionally used due to its ability to conform to the shape of the limb and provide a rigid support that is crucial for immobilization during the healing process. Once the stockinette is in place, plaster bandages are moistened and wrapped around the stockinette, allowing them to harden as they dry, ultimately forming the protective cast that supports the injured area.

While fiberglass is also used for casting, it usually replaces plaster in many settings due to its lighter weight and greater ease of application. Padding, while important for patient comfort and protection against skin irritation, is not the primary component that provides the structure of the cast. Silicone is not commonly used for traditional casting; it may have niche applications in specialty casts but does not serve the same purpose as plaster in most scenarios.