Abstract: A mounting plate is formed from plastic and with a first one of its planar surfaces substantially flat and otherwise formed to be affixed to a dental model. A connecting rib, formed to extend out from the other planar surface of the mounting plate, and along its entire length, has a modified "T" shaped configuration with a vertical leg extending up from the planar surface and a cross-arm extending out to each side of the leg so as to form a groove to each side of the vertical leg between the planar surface of the plate and the opposed surface of the cross-arm. A slot is formed through the central rib of each articulator with a shoulder extending from each wall of the slot into the slot but so as to leave a narrow passage sized to receive the vertical leg of the modified "T" shaped rib.

Abstract: The upper and lower jaw members and intermediate connecting member of a dental model articulator are molded from suitable plastic as an integral unitary whole; with the jaw members spaced from each other, by the intermediate connecting member, a distance comensurate with the dental models to be mounted on the articulator, and so that the upper jaw member articulates with respect to the intermediate member and lower jaw member to facilitate relative positioning of, and the performing of work on, the dental models. An over-center toggle-type-hinge is integrally molded between the upper jaw member and the intermediate connecting member to provide for articulation of the upper jaw member.