What is the function of a face bow in dentistry?

The function of a face bow in dentistry is primarily to orient the maxilla, or upper jaw, to the temporomandibular joint (TMJ). This device is used during the process of creating dental restorations or prosthetics, as it helps to capture the spatial relationship between the maxilla and the TMJ. By obtaining this orientation, dentists can ensure that restorations are fabricated in a way that accommodates the natural bite and jaw movements, leading to improved comfort and function for the patient.

While measuring jaw relationships is an important aspect of dental practice, that is more closely associated with other tools and methods rather than the specific function of a face bow. Adjusting bite registration is also related, but the primary purpose of a face bow is to provide a reference point for the maxilla's position relative to the TMJ. Similarly, a face bow is not used for assistance in teeth whitening, which involves different techniques and instruments.