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Rigid body movement measurement method, rigid body movement measurement apparatus, rigid body movement measurement program, jaw movement measurement method, jaw movement measurement apparatus, and jaw movement measurement program

Assignee: Nihon University
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Filing: 2001-05-15
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Granted: —
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Expires: 2021-05-15
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Abstract

Abstract Translated from Japanese (57)【要約】 【課題】 被検体の上顎および下顎の相対的な運動の状 態を測定する顎運動の測定において、かみ合わせにおい て正常に上顎と下顎が接触しないかみ合い相異常、顎の 開閉運動に不連続性があり、ときには「クリック」音が 認められる運動相異常等、顎の機能で特徴づけられる相 対的な回転運動を定量的に測定ができ、また一般室での 測定を可能とすることである。 【解決手段】 カメラで下顎、下顎のマーカー座標読込 み(STEP1)、下顎特定点、上顎特定点の座標と単 位ベクトル算出し(STEP2)、上顎特定点の座標、 単位ベクトルを基準として変換し、(STEP3)これ らをくりかえし、運動位置の変化を示す行列算出し(S TEP5)、回転座標系の単位ベクトル、回転角、回転 中心座標算出し、これらを繰り返す(STEP6、7、 8)。複数のマーカーは、反射型のマーカーである。 (57) [Summary] [PROBLEMS] To measure jaw movement to measure the relative movement of the upper and lower jaw of a subject; To be able to quantitatively measure relative rotational movements characterized by jaw functions, such as abnormal motor phases with discontinuities and sometimes "click" sounds, and to enable measurements in general rooms It is. A lower jaw, lower jaw marker coordinates are read by a camera (STEP 1), lower jaw specific points, upper jaw specific points coordinates and a unit vector are calculated (STEP 2), and upper jaw specific points coordinates, The conversion is performed with the unit vector as a reference (STEP 3), and these are repeated to calculate a matrix indicating a change in the motion position (S (Step 5), the unit vector of the rotation coordinate system, the rotation angle, and the rotation center coordinate are calculated, and these are repeated (STEPs 6, 7, 8). The plurality of markers are reflective markers.

Inventors

  • 👤 Takahide Maeda
  • 👤 隆秀 前田
  • 👤 Katsumi Miyoshi
  • 👤 克実 三好

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-08 21:13
CPC Classifications
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