Which item serves as the cutting end in the dental dam setup?

The stylus serves as the cutting end in the dental dam setup because it is specifically designed to provide precision when creating the holes in the dental dam material. The sharp, pointed end of the stylus allows the dental assistant to accurately pierce the dam for the necessary teeth, ensuring that the dam fits snugly around the area being worked on. This is crucial for maintaining a dry and operative field during dental procedures.

In contrast, other items in the dental dam setup fulfill different roles. The ligature is typically used to secure the dam in place, the stabilizing cord helps in positioning the dam for better retention and stability, and the dental dam forceps are used for handling and placing the clamp onto the tooth, not for cutting. Each component has its specific purpose, but the stylus is uniquely suited for making the precise cuts required in the setup process.