In which bite registration position is occlusal clearance measured?

The measurement of occlusal clearance is done in the maximum intercuspation position. This is the occlusal relationship where the cusps of the teeth interdigitate optimally when the jaw is closed in a habitual position. It allows for an accurate assessment of the space between the opposing dental arches.

In this position, the occlusal surfaces of the teeth come into complete contact, providing a reliable reference point to measure how much clearance is available for various prosthetic restorations. By measuring in maximum intercuspation, dental professionals can ensure there is sufficient space to accommodate materials used in crowns, bridges, or dentures without risking interference or discomfort for the patient.

Other positions, such as centric relation or centric occlusion, may not provide the same clarity in terms of fitting prosthetic devices, as these involve slightly different jaw positions where the teeth may not be in optimal contact. Protruded occlusion, where the jaw is moved forward, further alters the relationships and is not suitable for measuring occlusal clearance in a functional, habitual biting scenario. Therefore, maximum intercuspation is the most accurate and functional position for this purpose.