| 摘要 |
A dental model articulator includes two hinge-jointed arms, each arm having segments connected at a hinge joint having mating ele-ments, one integral to each segment of an arm. One element includes two cymbals that are coax-ial on a major hinge axis and concave facing which resiliently capture between them a node of the mating element on the other segment which has the form of opposed, outwardly facing con-vexities. Multiaxial motion between the seg-ments of each arm is accommodated by the ro-tation of the convexities of the node within de-tents at the apices of the cymbals. The extrem-ities of each arm terminate in cylindrical rod--like elements that are parallel to the major hinge axis. The rods engage with transverse, cylindri-cal channels either cut-in, molded-in or affixed to the models. With the models positioned in cen-tric occlusal relationship and the arms adjacently positioned and engaged, the four rods are adhe-sively fixed in the channels. Once fixed, the two hinge joints together define a single hinge axis posterior and interjacent to the models. Further, each hinge joint can allow the node elements to release from the axis detents and slide between the cymbals to permit protrusive and lateral mas-ticatory motions between the dental models.
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