A Clinical, Periodical and Physiological Evaluation of Changes in Masticatory Load Center and Function

咀嚼负荷中心和功能变化的临床、定期和生理学评估

基本信息

批准号：
08457653
负责人：
MATSUMOTO Makoto
金额：
$ 1.79万
依托单位：
Tokyo Medical and Dental University
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

项目摘要

The aim of the study was to evaluate the unilateral shortened arch and occlusal rconstruction by RPD to elucidate relation between distribution of occlusal contacts and location of load center of masticatory musculature activities by EMG and Prescale.Distnbution of occlusal contacts and those loads, also location of load center were measured by extra-thin-layer of pressure indicator (Prescale Fuji Film Co.), with an exchusive analyzing computer system EMG of masticatory activities and occlusal contacts were recorded with Prescale at IP clenching. Ten bilateral shortened arch-cases were used as control and fifteen unilateral shortened dental arches contacts in unilateral shortened arc and after prosthdontic treatments, those occlusal loads, coordinates of the points and amounts, in relation masticatory functions were studied in periodically at pre and post RPD treatments. These data were analyzed and evaluated in those of control group. The outlines of these results were as follows ;I) The location of the occlusal load center in dentate mouth was in about median line of the maxillar first molar region, but in unilateral shortened arch the load center was biased about one premolar breadth anteriorly and inclined toward nemaining dentate side.2) The center of supporting area of unilateral shortened arch edentation was biased toward remaining side and slightly to incisal arch.3) Then after wearing eligible designed RPD for about one year, in unilateral edentate arc, the location of load cnter was improved as dentate arc, presuming physiological and functional recovery, and also activated masticatory musculatures.4) The prosthodontic restoration for unilateral edentate cases (unilateral shortened arch) was quite effective in clinical and physiological standpoints from the follow-up results in one year and 2 months.

该研究的目的是通过RPD评估单方面缩短的拱形和闭合R型的结构，以阐明咬合接触的分布与通过EMG和预易于咀嚼性肌肉活动活性的位置之间的关系。通过咬合接触和这些负载中心的位置，逐局的位置是额外的压力，这是额外的压力（在额外的指示下）。随着经验分析的计算机系统EMG的咀嚼活动和咬合触点，在IP紧握时通过预划分记录了。将十个双边缩短的拱形箱用作对照，在单侧缩短的弧线和假体治疗后，有15个单侧缩短的牙齿拱门接触，这些咬合负荷，点和数量的坐标，在RPD前和RPD后的定期和后，在定期进行了咀嚼功能。这些数据在对照组的数据中进行了分析和评估。这些结果的概述如下； arch.3) Then after wearing eligible designed RPD for about one year, in unilateral edentate arc, the location of load cnter was improved as dentate arc, presuming physiological and functional recovery, and also activated masticatory musculatures.4) The prosthodontic restoration for unilateral edentate cases (unilateral shortened arch) was quite effective in clinical and physiological standpoints from the follow-up results in一年零2个月。