Occlusion concepts: centric relation
The centric relation (CR) is the maxillo-mandibular relation during which the head of the condyle is in its most anterior superior position in the glenoid fossa. The anterior surfaces of the head are braced against the most superior part of the shapes of the articular eminence. Between the fossa and the head is the articular disc, and the head articulates with the avascular aspect of the disc. It is essential to know that the centric relation is not an occlusion but more like a bone-bone relationship (both jaw relations). It is independent of tooth contact and ligament-guided position. This position can be reproduced with or without teeth as it is not tooth-determined.