Centric relation is:
A. Teeth to teeth
B. Bone to bone***
C. bone to teeth
Centric relation is the most retruded relationship of the mandible to maxilla when the condyle in the most posterior unstrained position in glenoid fossa from which lateral movement can be made at any given degree of jaw separation.
Centric occlusion the occlusion of teeth when the mandible is in centric relation to maxilla (maximum teeth intercuspation).