Fig 3. Collision detection for RM₁ with the antagonist RM¹ in the Occlusal Fingerprint Analyser software (OFA) during maximum intercuspation contact.

a) The RM¹ is transparent to show the collision (red areas) in the occlusal surface of the RM₁; the recorded power stroke pathway trajectory of the RM₁ (summarized by the two arrows) is subdivided into an incursive (black arrow = phase I) and an excursive (dashed arrow = phase II) vector. b) The mastication compass visualizes the spatial orientation of phase I and II. The length of the two arrows informs about the inclination angle (after [31]).