Abstract: A dental articulator comprising a maxillary tray support member, a mandibular tray support member, and a hinge. The maxillary tray support member and mandibular tray support members are each provided with a locking member. The hinge is separated into an upper hinge arm and a lower hinge arm with each being provided with a key. The combination of the key in the upper and lower hinge arms coupled with the locking member in the maxillary and mandibular tray support members are used to lockingly engage the hinge to these members. The opposed ends of the upper hinge arm and the lower hinge arm are frictionally mountable to one another for forming a hinge joint at each end thereby enabling the rotatable movement of the maxillary and mandibular tray support members for moving the dental articulator from an open and closed position when in use.