顎運動の3次元表現を応用した小児に適した顎運動解析装置の開発

DOI 被引用文献5件 参考文献24件

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  • Development of a Jaw Movement Analytic Device in which Indicates the Jaw Movement Expressed Three-dimensionally and is Suitable for Youngsters

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The author established a new jaw movement analytic device small in size and light weight, which does not overly burden young children and is able to record natural jaw movement in terms of a minute jaw movement. The author also tried to develop the device to express a minute abnormality in jaw movement using the axis expressed as the center of the rotation in the jaw movement. The actual measurement wave shape was searched for by using a difference movement transformer to see the movement of the incisor model and by using a high precision form measurement change meter to see the movement of the left condylar model, and to see the precision of the prototype jaw movement analytic device. It was compared with a Nasohexsagraph® based on that wave shape.<BR>The results were obtained as follow.<BR>1) The wave shape of the prototype jaw movement analytic device corresponded to the actual measurement wave shape.<BR>2) The wave shape of the irregular movement unusual part by the resin and screw could not be confirmed with Nasohexsagraph® but could be confirmed with the prototype jaw movement analytic device by applying the theory of the position of the shaft and its direction.<BR>It was unacceptable with the convertional jaw movement analytic device to express a jaw movement in the voluntary point with respect to the condylar, and the molar. Also, before measuring it, it was difficult for a condition to be specified and to apply it to a lower aged child. A prototype jaw movement analytic device which can be measured from the image such as CT and can detect a minute movement wrong point by express in a shaft was developed successfully.

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