Which instrument is used to trim acrylic resin bases during denture processing?

• A. End cutters
• B. Archwire
• C. LeCron carver
• D. Acrylic trimming bur

Answer: (D)

In denture processing, shaping and smoothing the acrylic resin base requires an instrument designed specifically for trimming that material. An acrylic trimming bur is made to abrade and cut acrylic resin efficiently, allowing you to remove flash and refine the border with control, without risking damage to the surrounding areas or the metal framework. Its cutting action and size are suited for bulk resin removal and precise finishing of the denture base.

The other tools serve different purposes: end cutters are mainly for cutting metal parts or wires, archwires are used in orthodontics for adjusting braces, and a LeCron carver is used for carving and refining wax or acrylic surfaces but not the dedicated trimming of a processed denture base.