A Dental Articulator is a mechanical instruments that represents the temporomandibular joints and jaws member, to which maxillary and mandibular casts may be attached to simulate some or all-manibular movements. Primary function of articulator is to simulate patient in the absence of patient. An articulator can simulate but they cannot duplicate all mandibular movement. Articulator may be made of metal or plastic. Metal articulator shows errors resulting from metal fatigue. The articulator may not be exactly simulate the intraborder and functional movements of the mandible. Error in jaws relation procedures are reproduced as error in denture occlusion. Articulator do not have any provision to indicate or correct these error
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