An articulator is a mechanical device used in dentistry to which casts of the upper and lower teeth are fixed in order to reproduce recorded positions of the mandible (lower jaw) in relation to the maxilla (upper jaw).
It is a complex articulator which almost imitates the anatomy of the TM joint (the joint of the lower jaw with the skull) and follows the movement of this condyle. Therefore, it can be used in the fabrication of complex crowns, long span bridges and full mouth rehabilitation. This articulator is also used for jaw surgery (orthognathic) planning.
By nature, this sort of articulator’s use is only meaningful if the position of the maxillae is duplicated with respect to the skull. Normally this is achieved by the use of a face-bow.