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A STUDY OF RELATIONSHIP BETWEEN DENTURE BASE SIZE AND MOVEMENT

义齿基托尺寸与活动关系的研究

基本信息

批准号：
09470434
负责人：
MIZUTANI Hiroshi
金额：
$ 1.54万
依托单位：
TOKYO MEDICAL AND DENTAL UNIVERSITTY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1998
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09470434/
关键词：
PARTIAL DENTURE DENTURE MOVEMENT DENTURE BASE SIZE MAGNETIC FIELD MI SENSOR 部分床義歯義歯床磁場測定

项目摘要

THE AIM OF THIS STUDY WAS TO ANALYZE THE DENTURE MOVEMENT WITH MEASURING THE MAGNETIC FIELD STRENGTH AND TO MINIMIZE THE DENTURE BASE WITHIN A LIMIT OF ALLOWABLE DENTURE MOVEMENT.AN INSTRUMENT (D-MI) FOR MEASURING THE MAGNETIC FIELD STRENGTH APPLYING MI SENSOR WAS USED IN ORDER TO SURVEY THE DENTURE MOVEMENT.IN CASE WITH USING THE MARKER MAGNETS, THE OUTPUT VOLTAGE VARIED AS A FUNCTION OF DISTANCE BETWEEN THE TARGET AND THE MI SENSOR WITHIN A LIMIT OF O<D<5MM DISTANCE, THE MORE THE DISTANCE INCREASED, THE LOWER THE VOLTAGE WAS.IF THE DISTANCE BETWEEN THE MAGNET AND THE SENSOR WAS FIXED TO 15MM SUPPOSING THE HUMAN SUBJECTS, THE VOLTAGE INCREASED LINEARLY AGAINST THE HORIZONTAL SLIDE ZMM.SECONDARILY, IT WAS EXAMINED WHETHER THE DENTURE MOVEMENT WAS PROPORTIONAL TO THE LEAKED MAGNETIC FIELD PRODUCED BY THE SLIDE BETWEEN THE MAGNETIC ASSEMBLY AND THE KEEPER THE MEASUREMENT WAS PERFORMED ON THE CONDITION THAT THE DISTANCE BETWEEN THE ASSEMBLY AND THE SENSOR WAS FIXED TO 15MM AND THAT THE SLIDE BETWEEN THE ASSEMBLY AND THE KEEPER WAS CHANGED FROM 0MM TO0.5MM.THE RESULTS WERE AS FOLLOWS ; THE STRENGTH OF THE LEAKED MAGNETIC FIELD WAS PROPORTIONAL TO THE SLIDE DISTANCE WITHIN A LIMIT OF 0<D<0.5MM.THE 0.2MV VOLTAGE CHANGE CORRESPONDED TO 0.01MM HORIZONTAL SLIDE.THEREFORE IT WAS CONCLUDED THAT THE STRENGTH OF THE LEAKED MAGNETIC FIELD COULD BE AN INDEX OF THE DENTURE MOVEMENT.FINALLY ONE MAGNETIC DENTURE WEARER WAS USED TO MEASURE THE DENTURE MOVEMENT.THE DENTURE BASE WAS GRADUALLY REDUCED AND RATIO OF DENTURE MOVEMENT WAS CALCULATED.IT WAS CONCLUDED THAT THE SIZE OF THE DENTURE BASE INFLUENCES THE DENTURE MOVEMENT AND PROPER SIZE (NOT TOO EXTENDED AND NOT TOO REDUCED) IS NEEDED TO MINIMIZE THE DENTURE MOVEMENT.

本研究的目的是通过测量磁场强度来分析义齿的移动，并在允许的义齿移动范围内最小化义齿基托。为了测量义齿的移动，使用了应用MI传感器的磁场强度测量仪(D-MI)。在使用标记磁铁的情况下，输出电压在O&lt；D&lt；D&lt的范围内随目标与MI传感器之间的距离而变化；5 mm的距离，距离越大，电压越低。假设受试者，磁铁和传感器之间的距离固定为15 mm，对水平滑动ZMM的电压线性增加。SECONDARILY，检查义齿移动是否与磁性组件和保持器之间的滑动产生的泄漏磁场成正比。在组件和传感器之间的距离固定为15 mm，组件和保持器之间的滑动从0 mm到0.5 mm变化的情况下进行测量。在0.5 mm的极限范围内，漏磁场的强度与滑动距离成正比，0.2 mV的电压变化相当于0.01 mm的水平滑动。因此，漏磁场的强度可以作为义齿移动的一个指标。最后，使用一个磁性义齿佩戴器来测量义齿移动。义齿基托逐渐减小，义齿移动的比率被计算出来。结论是，义齿基托的大小影响义齿的移动，需要适当的大小(不太长也不太小)来最小化义齿的移动。