Department of Odontology, Clinical Oral Physiology, Faculty of Medicine, Umeå University, Umeå, Sweden.
Department of Research and Development, Umeå University, Sundsvall, Sweden.
J Oral Rehabil. 2020 Jul;47(7):834-842. doi: 10.1111/joor.12981. Epub 2020 May 8.
Jaw-neck motor function is affected in the chronic stage following whiplash trauma. It is not known whether motor function is affected also in the early stage after neck trauma.
To determine how jaw and head movement amplitudes and movement cycle times correlate with jaw and neck pain, and neck disability in the acute stage after whiplash trauma.
Jaw and head movements during jaw opening-closing were recorded with an optoelectronic system in 23 cases (4 men, 19 women, 18-66 years) within 1 month after whiplash trauma and compared with 27 controls without neck trauma (15 men, 12 women, 20-66 years). Jaw and head movement amplitudes, head/jaw ratio (quotient of head and jaw movement amplitude) and movement cycle times were evaluated in relation to jaw and neck pain (Numeric Rating Scale) and neck disability (Neck Disability Index). Analyses were performed with Mann-Whitney U test and Spearman's correlation.
Compared with controls, cases showed smaller jaw movement amplitudes (P = .006) but no difference in head movement amplitudes, head/jaw ratios or movement cycle times. There were no significant correlations between movement amplitudes or cycle times and jaw and neck pain, and neck disability. Cases with high neck pain intensity had smaller jaw movement amplitudes compared to cases with low neck pain intensity (P = .024).
The results suggest that jaw-neck motor function may be affected in the acute stage after whiplash trauma and more so in cases with higher neck pain intensity.
挥鞭样损伤后慢性期会影响颌颈运动功能。但颈部损伤后早期颌颈运动功能是否受影响尚不清楚。
确定颌骨和头部在张口闭口运动中的运动幅度和运动周期时间与颌骨和颈部疼痛以及颈部损伤后的急性阶段的颈部残疾之间的相关性。
在颈部损伤后 1 个月内，使用光电系统记录 23 例（4 名男性，19 名女性，18-66 岁）和 27 例无颈部损伤的对照者（15 名男性，12 名女性，20-66 岁）的颌骨和头部运动。评估颌骨和头部运动幅度、头/颌比（头部和颌骨运动幅度的商）和运动周期时间与颌骨和颈部疼痛（数字评分量表）和颈部残疾（颈部残疾指数）的关系。采用 Mann-Whitney U 检验和 Spearman 相关分析进行分析。
与对照组相比，病例组的颌骨运动幅度较小（P=0.006），但头部运动幅度、头/颌比或运动周期时间无差异。运动幅度或周期时间与颌骨和颈部疼痛以及颈部残疾均无显著相关性。颈部疼痛强度高的病例与颈部疼痛强度低的病例相比，颌骨运动幅度较小（P=0.024）。
结果表明，颌颈运动功能可能在挥鞭样损伤后急性阶段受到影响，且在颈部疼痛强度较高的病例中更为明显。
