Early diagnosis of temporomandibular joint dysfunction based on occlusion factors and the velocity of jaw movement from a biodynamic standpoint.

从生物动力学的角度根据咬合因素和下颌运动速度对颞下颌关节功能障碍进行早期诊断。

• 批准号: 11671951
• 负责人: SASAHARA Hiroshige
• 金额: $ 1.92万
• 依托单位: Nihon 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-11671951/
• 关键词: Occlusal sound; High-frequency component; Jaw movement; Rhythmic maximal opening and closing movements; Movement velocity

For the purpose of early diagnosis of temporomandibular joint dysfunction, we examined means of improving the occlusal sound measurement system, as well as changes in the coordination of temporomandibular joint components, the biodynamic and kinematic occlusal condition, and changes in the velocity of jaw movement, in order to verify the changes in the coordination of temporomandibular joint components in disc displacement frequently observed in daily clinical practice.1. The purpose of the accelerometer and the setting of the pressure level were examined for the occlusal sound measurement system used for measurement of the kinematic occlusal condition, and the system was improved to enable it to be used easily in daily clinical practice. The parts of wave analysis was improved into a wave data analysis system by which waveforms related to jaw movement, including not only occlusal sounds but also the tracing of jaw movement and electromyogram (EMG), can be analyzed using a personal computer.2. Changes in the kinematic occlusal condition and changes in the velocity of jaw movement were used as indices for the examination of healthy volunteers and subjects with temporomandibular joint dysfunction involving disc displacement, using high-frequency components of the occlusal sound. The results showed that the kinematic occlusal condition and jaw movement were unstable in subjects with temporomandibular joint dysfunction involving disc displacement. This suggested that disc displacement might have disrupted coordination between the condyle and the disc or the articular capsule, thereby destabilizing the temporomandibular joint, which is the fulcrum for jaw movement.The findings suggested the possibility that abnormal disc placement, the primary cause of the click, might be detected early by verifying changes in the kinematic occlusal condition and the velocity of jaw movement.

为了早期诊断颞下颌关节功能障碍，我们研究了改进咬合声音测量系统的方法，以及颞下颌关节部件的协调性变化、生物动力和运动学咬合状况以及颌运动速度的变化，以验证在椎间盘移位中经常观察到的颞下颌关节部件的协调性变化。 日常临床实践1．针对用于测量运动学咬合状况的咬合声音测量系统，检查了加速度计的用途和压力水平的设置，并对系统进行了改进，使其能够在日常临床实践中轻松使用。波形分析部分改进为波形数据分析系统，可以使用个人计算机分析与下颌运动相关的波形，不仅包括咬合声音，还可以跟踪下颌运动和肌电图（EMG）。 2．使用咬合声音的高频成分，将运动咬合状态的变化和下颌运动速度的变化作为对健康志愿者和患有涉及椎间盘移位的颞下颌关节功能障碍的受试者进行检查的指标。结果表明，颞下颌关节功能障碍（涉及椎间盘移位）的受试者的运动咬合状况和颌运动不稳定。这表明椎间盘移位可能破坏了髁突与椎间盘或关节囊之间的协调，从而破坏了作为下颌运动支点的颞下颌关节的稳定性。研究结果表明，通过验证运动咬合状况和下颌运动速度的变化，可能会及早发现椎间盘位置异常（咔哒声的主要原因）。

项目成果

内田貴之: "片側に顎関節症状を訴えた患者における両側関節円板のMRI所見"日本顎関節学会雑誌. 12巻2号. 227-233 (2000)

Takayuki Uchida：“一位主诉一侧颞下颌关节症状的患者的双侧关节盘的 MRI 结果”，日本颞下颌关节学会杂志，第 12 卷，第 227-233 期（2000 年）。

佐藤繁: "顎関節円板転位の方向が動的咬合状態に及ぼす影響"日本口腔診断学会雑誌. 13巻2号. 596 (2000)

Shigeru Sato：“颞下颌盘位移方向对动态咬合状况的影响”日本口腔诊断学会杂志，第 13 卷，第 2. 596 期（2000 年）。

岡本 康裕,斉藤 孝親,内田 貴之,大沢 聖子,宇田川 秀幸,梅田 宜承,佐藤 繁,笹原 廣重: "顎関節円板内方転位が顎運動に及ぼす影響-最大開閉口時の切歯点"日本口腔診断学会雑誌. 12巻2号. 699-700 (1999)

Yasuhiro Okamoto、Takachika Saito、Takayuki Uchida、Seiko Osawa、Hideyuki Udakawa、Yoshisho Umeda、Shigeru Sato、Hiroshige Sasahara：“颞下颌盘内侧移位对下颌运动的影响 - 最大张口和闭合时的切牙点” 日本杂志口腔诊断协会。第 12 卷，第 2 期。699-700 (1999)

梅田宜承: "咬筋圧痛症例の下顎張反射による評価-下顎安静位のオトガイタップ-"日本口腔診断学会雑誌. 13巻2号. 596 (2000)

Yoshisho Umeda：“使用下颌张力反射评估咬肌压痛 - 下颌静止位置的精神敲击 -”日本口腔诊断学会杂志，第 13 卷，第 2. 596 期（2000 年）。

Shigeru Sato, et al: "The influence of disc displacement direction of temporomandibular joint on kinematic occlusal condition"Jpn J Oral Diag/Oral Med. 13(2). 596 (2000)

Shigeru Sato 等人：“颞下颌关节盘位移方向对运动咬合状况的影响”Jpn J Oral Diag/Oral Med。