Which instrument is designed to pack and smooth out amalgam and resin materials?

The T-ball instrument is specifically designed to pack and smooth out amalgam and resin materials. Its unique shape allows for effective manipulation of these materials, facilitating the process of creating a smooth and compact restoration. The rounded end is used for condensing the material into the cavity preparation, ensuring that it is adequately packed and free of voids, which is essential for the longevity and strength of the restoration.

In contrast, the carving instrument is primarily used to shape and carve the surface of the material after it has been placed in the cavity, rather than for packing or smearing. The plastic instrument is typically employed for handling composite materials and is not specifically designed to compact amalgam. The amalgam carrier, while used to transport amalgam to the preparation site, does not possess the functionality required for packing and smoothing those materials once they are placed. Thus, the T-ball’s design and purpose make it the most appropriate choice for this task.