What is Christensen's phenomenon is seen in: and explain in detail?
Protrusive movement occurs while incising and grasping food. This movement occurs after the condyles rotate for more than 13° in the TMJ. The mandible moves forwards and downwards, bringing the maxillary and mandibular anterior teeth in an edge-to-edge relation. The characteristic posterior separation seen during anterior protrusion is called 'Christensen's phenomenon.