Die and Die Materials

This review examines die materials and systems used in prosthodontics, particularly for fixed prosthesis. Die materials are crucial for accurately reproducing prepared teeth and surrounding tissues to fabricate indirect restorations. Key requirements for die materials include dimensional accuracy, surface hardness, detail reproduction, and compatibility with impression materials. Common die materials discussed include gypsum products, amalgam, epoxy resins, electroplated metals, and flexible materials. Each has advantages and limitations in properties like strength, abrasion resistance, and ease of use. The review covers various die systems, including working casts with separate or removable dies. Factors affecting accuracy such as pin placement technique and sectioning methods are noted. The importance of die spacers and lubricants in achieving proper fit is mentioned. Special considerations for implant casts are also addressed. The review emphasizes the importance of selecting appropriate die materials in prosthodontics.