Title:
【考案の名称】顎運動シミユレ-タ
Document Type and Number:
Japanese Patent JPS5889015
Kind Code:
U
Abstract:
A jaw movement simulator comprising a maxillary frame and a mandibular frame and including two irregular five surface guide boxes on the maxillary frame enclosing two spherical styluses on the mandibular frame, to simulate the hinge axis movements of the temporo-mandibular joints. The guide boxes on the maxillary frame are formed by adjustable walls which limit and control the movements of the two styluses in three dimensions. The relative motion of the simulator produces a rhomboid configuration on a horizontal plate positioned at the forward region of the instrument. The outer walls of the guide boxes are constructed to restrain lateral shifting of the styluses when the instrument is simulating the protrusive movement. A pair of horizontal cup-end shafts colinear with the centric relation position of the axis in the guide boxes are adjustable inwardly to serve as retainers to hold the two styluses in fixed positions relative to the guide boxes so that the two frames of the instrument can only make rotational movement about the hinge axis in centric relation position. A lower (mandibular) frame with two spherical styluses, an unadjustable, fixed distance apart to create an axis to simulate the hinge axis of a human mandible.
Inventors:
Donkey El Re
Application Number:
JP15637982U
Publication Date:
June 16, 1983
Filing Date:
October 18, 1982
Export Citation:
International Classes:
A61C11/02; A61C19/045; A61C11/06; A61C11/08; (IPC1-7): A61C11/00