Which statement best describes the term 'convenience form' in amalgam cavity preparation?

• A. The dentist's convenience only
• B. The margin angle of 90 degrees
• C. The design features that allow access for finishing and placement
• D. The use of adhesives

Answer: (C)

Convenience form is about the adjustments you make to the cavity design to give you easy access and visibility for placing and finishing the amalgam restoration. It focuses on creating enough room for instruments, condensation, carving, and checking margins so the restoration can be placed and finished properly. It isn’t about the dentist’s personal convenience, a specific margin angle like 90 degrees, or the use of adhesives. Those elements relate to other aspects of preparation or restorative science, while convenience form specifically ensures you can complete the restoration efficiently and accurately.