Which type of provisional coverage is made from a polymer shell filled with composite resin?

The type of provisional coverage that is made from a polymer shell filled with composite resin is indeed prefabricated polymer crowns. These crowns are designed to be used temporarily while awaiting the completion of a definitive restoration. The polymer shell provides strength and durability, while the composite resin helps achieve a natural appearance that is aesthetically pleasing to the patient.

These crowns can be adapted to fit various tooth sizes and shapes, making them versatile for different clinical situations. The composite material allows for easy shaping and polishing, which contributes to a smoother finish and better integration with the surrounding dental structures.

While the other types of crowns listed have their own specific applications and materials, they do not involve a polymer shell filled with composite resin in the same manner. For example, custom provisional crowns are made specifically for a patient, often using different techniques and materials. Stainless steel crowns are primarily used in pediatric dentistry for their strength and simplicity but do not employ a polymer shell. Preformed polycarbonate crowns are also used for temporary coverage but are not filled with composite resin like the prefabricated polymer crowns.