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MRI-Based Assessment of Masticatory Muscle Changes in TMD Patients after Whiplash Injury
- Source :
- Journal of Clinical Medicine, Volume 10, Issue 7, Journal of Clinical Medicine, Vol 10, Iss 1404, p 1404 (2021)
- Publication Year :
- 2021
- Publisher :
- Multidisciplinary Digital Publishing Institute, 2021.
-
Abstract
- Objective: to investigate the change in volume and signal in the masticatory muscles and temporomandibular joint (TMJ) of patients with temporomandibular disorder (TMD) after whiplash injury, based on magnetic resonance imaging (MRI), and to correlate them with other clinical parameters. Methods: ninety patients (64 women, 26 men<br />mean age: 39.36 ± 15.40 years), including 45 patients with symptoms of TMD after whiplash injury (wTMD), and 45 age- and sex-matched controls with TMD due to idiopathic causes (iTMD) were included. TMD was diagnosed using the study diagnostic criteria for TMD Axis I, and MRI findings of the TMJ and masticatory muscles were investigated. To evaluate the severity of TMD pain and muscle tenderness, we used a visual analog scale (VAS), palpation index (PI), and neck PI. Results: TMD indexes, including VAS, PI, and neck PI were significantly higher in the wTMD group. In the wTMD group, muscle tenderness was highest in the masseter muscle (71.1%), and muscle tenderness in the temporalis (60.0%), lateral pterygoid muscle (LPM) (22.2%), and medial pterygoid muscle (15.6%) was significantly more frequent than that in the iTMD group (all p &lt<br />0.05). The most noticeable structural changes in the masticatory muscles occurred in the LPM with whiplash injury. Volume (57.8% vs. 17.8%) and signal changes (42.2% vs. 15.6%) of LPM were significantly more frequent in the wTMD group than in the iTMD group. The presence of signal changes in the LPM was positively correlated with the increased VAS scores only in the wTMD group (r = 0.346, p = 0.020). The prevalence of anterior disc displacement without reduction (ADDWoR) (53.3% vs. 28.9%) and disc deformity (57.8% vs. 40.0%) were significantly higher in the wTMD group (p &lt<br />0.05). The presence of headache, sleep problems, and psychological distress was significantly higher in the wTMD group than in the iTMD group. Conclusion: abnormal MRI findings and their correlations with clinical characteristics of the wTMD group were different from those of the iTMD group. The underlying pathophysiology may differ depending on the cause of TMD, raising the need for a treatment strategy accordingly.
- Subjects :
- musculoskeletal diseases
Visual analogue scale
lcsh:Medicine
temporomandibular disorder
Lateral pterygoid muscle
Palpation
Article
masticatory muscle
Masseter muscle
03 medical and health sciences
0302 clinical medicine
stomatognathic system
whiplash injury
medicine
magnetic resonance imaging
masseter muscle
Orthodontics
medicine.diagnostic_test
business.industry
lcsh:R
Magnetic resonance imaging
030206 dentistry
General Medicine
Temporomandibular joint
Masticatory force
stomatognathic diseases
medicine.anatomical_structure
lateral pterygoid muscle
Medial pterygoid muscle
business
human activities
030217 neurology & neurosurgery
Subjects
Details
- Language :
- English
- ISSN :
- 20770383
- Database :
- OpenAIRE
- Journal :
- Journal of Clinical Medicine
- Accession number :
- edsair.doi.dedup.....048069c25787547dc773ef59c5c9d2db
- Full Text :
- https://doi.org/10.3390/jcm10071404