Healthy TMJ (disc not shown), right. A: Frontal view, where the condyle is at the end of the jaw-opening phase and the 3D reconstruction of the stress-field reveals the congruence of the surfaces of the condyle relative to the crest of the TMJ eminence. B: Superior view, with the center of the stress-field (minimum condyle-fossa/eminence distance) during jaw opening and closing identified by the red dots. The center of the stress-field depended on the congruence of condyle-fossa/eminence surfaces at a given jaw position. In this case, it tracked along the mediolateral axis of the condyle during the movements associated with jaw opening and closing, starting in the lateral aspect of the joint when the teeth were in maximum intercuspation.