What does centric occlusion imply about the position of the teeth?

Centric occlusion refers to the occlusion of the opposing posterior teeth when the jaws are closed in their optimal relationship. This position is considered the maxillary and mandibular relationship when the cusps of the molars interdigitate properly, creating a stable and functional bite.

In this context, optimal relationship means that the dental arches align in such a way that enables good occlusal function, allowing for even distribution of forces during chewing and minimizing wear and stress on the dental structures. This is essential for maintaining the health of the teeth and the temporomandibular joint (TMJ).

The other options do not accurately capture the definition of centric occlusion. For instance, the positioning of the molars is only part of the equation, and centric occlusion involves a broader relationship of all teeth. While the maxillary arch shape might influence occlusal relationships, it is not the defining characteristic of centric occlusion itself. Additionally, centric occlusion does not occur with the jaw fully opened; it specifically refers to the position when the jaws are closed. Thus, understanding that centric occlusion relates to the closed position of the jaws in a functional and optimal bite is key.