The elucidation of the influence which a jaw joint dynamic stateand joint load have on jaw joint head remodeling

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In order to catch the mandibular movement of laboratory animals in three dimensions, the systems development adapting the electromagnet by a chip coil was performed to the mark, but since a magnetic field became unstable by turning on and off of a coil, sufficient precision for measurement was not acquired. So, the mark was changed into the system performed with the magnet of one point, and load of the head of mandible was performed for jaw movement measurement by changing occlusion sharply. Although the lower jawbone changed greatly with growth in appearance, there was little modification of the body of bone and the form of an alveolar bone or the bone of a jaw was affected.