This invention is directed to a positioning jig for preparing a two or more of adjacent teeth for a dental prosthesis comprising a member with (i) three or more parallel bores in the member and (ii) one or more means to attach the member to a dental articulator. The invention is also directed to methods of use of the position jig such as to prepare a series of aligned holes in teeth or aligned holes mockup of a dental bridge for a prosthesis.

A method and apparatus for the design and manufacture of dentures wherein the number of office visits that a patient must attend in order to develop and obtain dentures is reduced. In one embodiment, during a first visit, final impressions and a measurement of the patient's upper lip is obtained. In one embodiment, a lab then creates a denture base and applies tooth replicas. In one embodiment, this is done using a physical fabrication aid of an embodiment of the present invention. Alternatively, the denture base can be created from a digital representation, and the denture base is then preferably sized and adjusted during the patient's second visit before final dentures are created and provided to the patient during the patient's third visit.

The present invention relates to an articulator. The articulator may significantly improve the coupling force between a maxillary fixing part and a mandibular fixing part. In addition, since the horizontal turning radius of the maxillary fixing part is easily adjustable according to the size of a mandible model, errors that may occur when the state of occlusion between the mandible model and a maxillary model is checked may be easily prevented.

A device for making, duplicating and fixing dental models in articulator, using dental replicas (19) of plaster or other material with bases (20) for the manufacture of dental models (18). The device incorporates at least three pins (3) that have elements to be embedded in the bases (20) in charge of said pins (3) for positioning and fixing the dental models (18) to platens (7) that have a minimum of three protruding protrusions (8) on its surface and arranged to fit with the pins (3) and, where appropriate, provide a releasable connection with the pins (3). The platens (7) are attached to the articulator (1) with a height or ratio (h) between protrusions (8) of the platens (7), upper and lower, preset and reproducible.