Which term refers to a mechanical instrument representing the temporomandibular joints and jaws?

• A. Articulator
• B. Facebow
• C. Bite Fork
• D. Occlusal Gauge

Answer: (A)

An articulator is the mechanical instrument that represents the temporomandibular joints and jaws by holding dental casts in a fixed spatial relationship and simulating jaw movements. It lets you study how the teeth interact during opening, closing, and side-to-side movements, and it provides a stable platform for planning and adjusting restorations without patient fatigue. Adjustable articulators mimic condylar paths and incisal guidance, enabling realistic replication of jaw function for diagnosis and treatment planning.

Other tools have related roles: a facebow records the maxilla’s orientation to the skull and transfers that relationship to the articulator; a bite fork is used to register the occlusion between the arches during jaw relations; an occlusal gauge measures contacts or vertical dimension. They support the process but do not themselves model the jaws and joints.