The literature contains considerable data on the traumatic effects of head-neck acceleration due to rear-end collisions. The Temporomandibular (jaw) joint is also subject to indirect loading, due to its inertial behaviour. Only a small body of work, Schneider et al , describes motion of the mandible in these circumstances.
In this study we investigate the nature of forces reacted within the Temporomandibular joint (TMJ). A model has been built which is a precise representation of the TMJ embodied in a physically exact model cranium. The whole is mounted on an RID-III cervical spine. Sled tests were performed. Results show high angular velocities and accelerations of the mandible for low velocity rear-end impacts.