Which instrument is typically used for bite registration?

The use of pink sheet wax as a bite registration instrument is appropriate because it effectively captures the occlusal relationship between the upper and lower dental arches. Pink sheet wax, which is a thermoplastic material, can be softened with heat and then molded to the occlusal surfaces of the teeth. When the patient bites down on the softened wax, it records the bite registration accurately as it cools and solidifies in the desired form.

This method is preferred in dental practices for its simplicity and reliability in obtaining accurate impressions of the bite, contributing to the proper fitting of dental restorations and prostheses. The other options, while related to dental procedures, do not serve the specific purpose of bite registration. For instance, heat sources are used to manipulate certain materials but do not provide a means to register bite accurately, and the try-in prostheses are utilized after bite registration to check the fit and aesthetics of dental restorations rather than to create the bite registration itself.