📝 Explanation:
Centric Relation (CR): A maxillomandibular relationship where the condyles are in their most superior, anterior position against the articular eminences, independent of tooth contact.
Key Muscles: The temporalis, masseter, and medial pterygoid form a "sling" that closes the jaw and seats the condyles.
Temporalis Role: The temporalis muscle is especially important for pulling the mandible up and back, helping to achieve that ideal condylar seating for CR.
Pterygoids: The medial pterygoid also elevates the mandible, while the lateral pterygoid helps with opening and protrusion, but it's the coordinated action of the three main elevators that defines CR.
Centric relation is a ligament-guided position of the mandible, not a muscle-guided one. It refers to the relationship when the condyles are in their most anterior-superior position against the posterior slopes of the articular eminences, with the discs properly interposed.
MCQ