Centric Relation Definition — MFDS Part 1 MCQ
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Correct answer: E — A clinically determined, repeatable maxillomandibular relationship independent of tooth contact
Explanation lettering: C = shown as A · D = shown as B · B = shown as C · E = shown as D · A = shown as E
A is correct. Contemporary consensus treats centric relation as a clinically determined, repeatable and physiological relationship of the mandible to the maxilla that is independent of tooth contact and can serve as a reference position. B describes maximum intercuspation, also termed the habitual bite or intercuspal position, which is determined by tooth contact. C reflects the obsolete concept of centric relation as the most retruded or forcibly retruded mandibular position. D resembles a historically influential anatomical definition, but current evidence does not justify defining centric relation by a universally fixed condylar or disc position. E describes habitual neuromuscular closure rather than centric relation; swallowing may be used in some recording techniques but does not define the relationship.
Reference: Wiens JP, Goldstein GR, Andrawis M, Choi M, Priebe JW. Defining centric relation: the CR attributes survey. Journal of Prosthetic Dentistry. 2018;120(1):114-122. https://pubmed.ncbi.nlm.nih.gov/29526300/