Centric Relation
The maxillomandibular relationship in which the condyles articulate in their most superior and anterior position within the glenoid fossae, independent of tooth contact.
Full Definition
Centric Relation (CR) is a reproducible jaw position used as a reference point in prosthodontic diagnosis and treatment, defined by the position of the mandibular condyles rather than by tooth contact. Its precise definition has evolved across editions of the Glossary of Prosthodontic Terms, so editors should note which definition an author is using. CR is frequently compared and contrasted with Maximum Intercuspation (MI or ICP); the slide between CR and MI is called the 'CR-MI discrepancy' or 'long centric'. Editors must take care not to substitute 'centric occlusion' for 'centric relation', as these are distinct concepts.
Usage
Usage note: Do not conflate with 'centric occlusion', which is tooth-position-dependent. Authors sometimes use older synonyms such as 'retruded contact position'; flag these for consistency.
In Context
- "Occlusal records were mounted in centric relation to plan the full-arch restoration." — Diagnostic wax-up report
- "The clinician noted a 1.5 mm slide from centric relation to maximum intercuspation." — Occlusal analysis record