机械和行为相关的关节关节差异
J C Nickel1,2, Y M Gonzalez2, Y Liu3
1Oregon Health & Science University, School of Dentistry, Department of Oral and Craniofacial Sciences, Portland OR, USA.
Journal of dental research
|September 14, 2024
概括
关节 (TMJ) 盘的位移增加了组织负荷,通过能量密度 (ED) 和功率因子 (DF) 来衡量. 机械行为评分 (MBS) 在移位TMJ患者中显著更高,这表明潜在的退行性变化.
科学领域:
- 生物力学 生物力学
- 矯正牙科 矯正牙科是一種矯正牙科.
- 生物材料是一种生物材料.
背景情况:
- 关节 (TMJ) 的疲劳与负载大小 (能量密度,ED) 和频率 (肌功率因子,DF) 有关.
- 了解这些因素对于评估关节健康和预测疾病进展至关重要.
研究的目的:
- 在有或没有关节盘位移 (±D) 的受试者中测量ED和DF.
- 为了比较群体之间的机械行为得分 (MBS = ED2 × DF).
- 评估MBS作为关节结构变化的潜在生物标志物.
主要方法:
- 使用磁共振成像 (MRI) 来分类TMJ盘位移的观察性研究.
- 在现场记录下肌活动,以确定任务因子 (DF).
- 模拟的TMJ负荷和体内动态立体测量用于估计能量密度 (ED).
- 进行了变异的多变量分析,t测试和K平均线集群分析.
主要成果:
- 与-DTMJ相比,+DTMJ的平均ED显著高 (2倍).
- 职责因子 (DF) 在白天和masseter vs. temporalis肌肉中较高.
- 白天按摩器MBS在+DTMJ的女性中最高,超过-DTMJ的女性2至43倍.
- 集群分析确定了在+DTMJ中MBS显著更高的群体.
结论:
- 机械行为评分 (MBS) 在患有盘位移的TMJ患者中显著升高.
- MBS可以作为一个有价值的生物标志物来预测退行性TMJ疾病的进展或逆转.
- 这些发现突显了负载参数对关节组织健康的影响.
相关概念视频
00:58Introduction to Joints
The adult human body usually has 206 bones, and except for the hyoid bone in the neck, each bone is connected to at least one other bone. Joints are the location where bones come together. Many joints allow for movement between the bones. At these joints, the articulating surfaces of the adjacent bones can move smoothly against each other. However, the bones of other joints may be joined by connective tissue or cartilage. These joints are designed for stability and provide little or no movement.
01:03Structural Joints: Fibrous Joints
Fibrous joints are a type of joint where the bones are connected by fibrous connective tissue. These joints provide stability and minimal to no movement between the articulating bones. There are three types of fibrous joints.
Suture
All the bones of the skull, except for the mandible, are joined to each other by a fibrous joint called a suture. The fibrous connective tissue found at a suture strongly unites the adjacent skull bones and thus helps to protect the brain and form the face. In...
Suture
All the bones of the skull, except for the mandible, are joined to each other by a fibrous joint called a suture. The fibrous connective tissue found at a suture strongly unites the adjacent skull bones and thus helps to protect the brain and form the face. In...