部关节空间变化和肌肌肉激活在紧握时与完全或部分覆盖的闭合片
Annika Seiler1, Nenad Lukic1, Mutlu Özcan1
1Clinic of Masticatory Disorders and Dental Biomaterials, Center for Dental Medicine, University of Zurich, Plattenstrasse 11, Zurich, CH-8032, Switzerland.
Clinical oral investigations
|October 10, 2024
概括
前咬牙 splint 显著减少了关节疾病 (TMD) 症状,通过降低肌肉活化和改变状骨的位置. 这种 splint 设计比其他 occlusal splints 提供了更大的生物力学效果.
科学领域:
- 生物医学工程 生物医学工程
- 牙科生物力学 牙科生物力学
- 矯正牙科 矯正牙科是一種矯正牙科.
背景情况:
- 闭口是临时关疾病 (TMD) 的首要治疗方法.
- 对于闭合的确切作用机制尚不清楚.
- 不同的 splint 设计可能会产生不同的治疗结果.
研究的目的:
- 为了比较三种闭合性刺设计的生物力学效应:全覆盖,前咬和后咬刺.
- 为了评估这些支柱在健康受试者咬咬时对肌肉活动和关节空间的影响.
- 阐明在管理TMD时不同闭合的工作机制.
主要方法:
- 利用磁共振成像 (MRI) 和跟踪测量20个关节的最小关节内距离 (MID).
- 同时记录的乳腺肌肉电动肌图 (EMG) 在用100N咬力紧时.
- 在MID和EMG振幅的变化与没有裂纹的变化进行比较,采用重复测量ANOVA.
主要成果:
- 前部咬伤与基线和其他相比,前部肌活化减少了50% (p <0.011).
- 用前咬牙紧握导致MID减少近三倍 (p=0.011).
- 完全覆盖和后部咬伤片在肌肉激活或MID变异方面没有显著差异.
结论:
- 的设计显著影响生物力学结果,包括肌肉激活和状的位置.
- 前咬牙具表现出一种优越的能力,可以减少肌肉活动和改变状骨的定位.
- 在量身定制TMD治疗以适应个体患者症状时,骨设计是关键因素.
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