Development of six degree of freedom tracking device of mandibular movement in which magnetism is used. About the error of measurement value in clinical use.:—About the error of measurement value in clinical use—

概要

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Authors have been engaged in developing a measuring device which measures the lower jaw movement with 6 free axes by magnetism. In order to examine the clinical performance of the device, the accuracy was evaluated through reproducing measuring conditions and various types of the lower jaw movement on an articulator and the following conclusions were obtained.<BR>1. The maximum error in the distance with this device was 3.3mm in the incisal point when the maximum aperture movement from the centric occlusion was performed by a subject.<BR>2. The maximum error in the angle with this device was 2.13°in sagittal plane when the maximum aperture movement from the centric occlusion was performed by a subject.<BR>3. The prospect that this device can be used for measuring the lower jaw movement with 6 free axes at an actual clinical situation was obtained by this research.
日本顎口腔機能学会の論文