THE STUDY OF SYNTHETIC EVALUATION FOR STOMATOGNATHIC FUNCTION AND PHYSIOLOGICAL PERMISSIBLE RANGE

口颌功能及生理允许范围综合评价研究

• 批准号: 11671933
• 负责人: ABEKURA Hitoshi
• 金额: $ 2.69万
• 依托单位: HIROSHIMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11671933/
• 关键词: stomatognathic function; electromyogram; TMD; asymmetry index; habitual chewing side; masticatory efficiency; dental prescale; physiological range

The chewing function is the most important function in all jaw functions, and it is possible to be maintained by harmony of stomatognathic system biomechanics.In this study, the data by measurement of tooth classification biting force, examination of the occlusal condition by dental prescale and the electromyographic activties of masseter and temporal muscles was recorded for the student of this faculty of dentistry as an evaluation of the stomatognathic system biomechanics. The chewing value was measured as an inspection of the chewing function, and sign of the TMD and existence of the experience of the symptom by the inquiry were investigated as the parameter which estimated the superfluous burden to the stomatognathic system.It was proven that the chewing function was higher, as the occlusion contact area is bigger. The chewing function was also higher, as the tooth classification biting force, biting force in centric occlusion or muscular activity are higher, the correlation is comparatively stronger between each other. It was shown that the biting force was bigge and the chewing function is also higher, as the occlusal contact condition and muscle function are more symmetrical.In the examinee of this study, almost half of the subjecs have the experience in sign and symptom of the TMD.But it was happy that biting force and chewing function did not lower in these subjecs.Though the dental prescale and electromyograms, etc.were the porameters which evaluated the stomatognathic system biomechanics, it was impossible to indicate numerical value for physiological range between TMD and nomal from the result of this study. However, it is considered that the most important chewing function of the jaw function was able to be evaluated analytically. Then the important sugestion for improving and maintaining the chewing function was given by this study.

咀嚼功能是所有颌部功能中最重要的功能，只有通过口颌系统生物力学的协调才能维持。本研究通过测量牙齿分类咬合力、通过牙科预标尺检查咬合状况以及咬肌和颞肌的肌电活动记录该牙科学院学生的数据，作为口颌系统的评估 生物力学。测量咀嚼值作为咀嚼功能的检查，并通过询问来研究TMD的迹象和症状体验的存在，作为估计口颌系统多余负担的参数。事实证明，咬合接触面积越大，咀嚼功能越高。咀嚼功能也较高，牙齿分类咬合力、正向咬合咬合力或肌肉活动度越高，相互之间的相关性也较强。结果显示，咬合力较大，咀嚼功能也较高，咬合接触状况和肌肉功能更加对称。在本研究的受试者中，几乎一半的受试者有TMD的体征和症状的经历。但令人高兴的是，这些受试者的咬合力和咀嚼功能并没有降低。尽管牙齿预垢和肌电图等参数是评估的参数 就口颌系统生物力学而言，本研究的结果无法表明 TMD 与正常之间的生理范围的数值。然而，人们认为颌功能中最重要的咀嚼功能能够通过分析进行评估。本研究对改善和维持咀嚼功能提出了重要建议。