Development of a System for Synthetic Examination of Stomatognathic function

Research Project

Project/Area Number	03557083
Research Category	Grant-in-Aid for Developmental Scientific Research (B)
Allocation Type	Single-year Grants
Research Field	補綴理工系歯学
Research Institution	Okayama University
Principal Investigator	YAMASHITA Atushi Okayama University ・ Dental School, Professor, 歯学部, 教授 (00066995)
Co-Investigator(Kenkyū-buntansha)	KAWAKAMI Hiroshi Okayama University ・ Faculity of Engineering, A.Professor, 工学部, 助手 (90214600) BABA Mituru Okayama University ・ Faculity of Engineering, A.Professor, 工学部, 助教授 (80156538) YATANI Hirofumi Okayama University ・ Dental School, A.Professor, 歯学部, 助教授 (80174530) KONISHI Tadataka Okayama University ・ Faculity of Engineering, Professor, 工学部, 教授 (20025935) WASHIO Seiichi Okayama University ・ Faculity of Engineering, Professor, 工学部, 教授 (20026222)
Project Period (FY)	1991 – 1993
Project Status	Completed (Fiscal Year 1993)
Budget Amount *help	¥15,200,000 (Direct Cost: ¥15,200,000) Fiscal Year 1993: ¥3,600,000 (Direct Cost: ¥3,600,000) Fiscal Year 1992: ¥2,200,000 (Direct Cost: ¥2,200,000) Fiscal Year 1991: ¥9,400,000 (Direct Cost: ¥9,400,000)
Keywords	System for measuring jaw movement / 6 degree-of-freedom / Low invasive / PSD sensors / 非接触式 / 非接触型6自由度下顎運動計測装置 / 三次元下顎運動計測装置 / 非接触式半導体位置検出素子
Research Abstract	The aim of this study is to develop a system for measuring jaw movement in six degree-of freedom using PSD sensors. 1. A equation, based on geometrical-optical relation were utilized. Based on it, measurement error was less than 0.05mm. 2. The measurement apparatus consisted of an upper PSD and lower LED supporting structures. It became low invasive and compact. 3. Measurement error was 0.099 mm on average in XY plane static motion, 0.105 mm in YZ plane, 0.075 mm in ZX plane. In dynamic motion, accuracy was similar to static motion 4. Measurement error was 0.187 mm on average in static rotation. In dynamic rotation, accuracy was similar to static rotation. We developed a system for measuring jaw movement in six degree-of freedom using PSD sensors. The system was low invasive, and it has a high measurement accuracy, that was less than 0.2mm in vitro.