Title	Patients with Temporomandibular Joint Disorders are More Likely to Have Previously Suffered Cervical Hyperextension-Flexion Trauma
Clinical Question	Is a positive history of whiplash trauma more common in adult patients with TMD than in the non-TMD population?
Clinical Bottom Line	Patients with temporomandibular joint disorders (TMD) are more likely to have suffered cervical hyperextension-flexion trauma (whiplash) when compared to the non-TMD population. This statement is substantiated by a systematic review of six research articles, which found that a positive history of whiplash trauma is more common in a given TMD patient population than in a given non-TMD population.
Best Evidence
PubMed ID Author / Year Patient Group Study type (level of evidence) 24443899 Haggman-Henrikson/2014 6 published studies on the prevalence of neck trauma in patients with TMD Systematic review of non-randomized trials Key results Of 129 total studies, 32 articles were selected following initial screening and reviewed in full. 26 were subsequently excluded for failing to meet selection criteria. The remaining 6 articles reported a positive history of whiplash trauma in 8.4%- 70% of cases in TMD populations, compared with 1.7% -13% in the non-TMD control groups. In addition, patients with a history of whiplash trauma reported more TMD pain, more severe jaw dysfunction, more headaches, stress, dizziness and sleeping problems.
Evidence Search	"temporomandibular joint disorders"[MeSH Terms] AND "whiplash injuries"[MeSH Terms]
Comments on The Evidence	Study designs included case series, case-control studies, retrospective, and treatment-outcome analysis. Groups involved in the studies were subject to similar circumstance, adequately followed-up, and yielded adequate completion rates. Research was conducted in the absence of any conflicting interests. Studies relied of patients self-reporting their symptoms and severity.
Applicability	Research indicates that as well as being a comorbid condition, cervical hyperextension-flexion trauma may play a role in initiating and/or exacerbating temporomandibular joint disorder.
Specialty	(General Dentistry)
Keywords	TMD, temporomandibular joint disorder, whiplash, cervical trauma, jaw pain, pain, trauma, Temporomandibular disorders
ID#	2873
Date of submission	03/25/2015
E-mail	robertsonl@livemail.uthscsa.edu
Author	Lisa Robertson
Co-author(s)
Co-author(s) e-mail
Faculty mentor	Edward F. Wright, DDS, MS
Faculty mentor e-mail	WrightE2@livemail.uthscsa.edu
Basic Science Rationale (Mechanisms that may account for and/or explain the clinical question, i.e. is the answer to the clinical question consistent with basic biological, physical and/or behavioral science principles, laws and research?) None available
Comments and Evidence-Based Updates on the CAT (FOR PRACTICING DENTISTS', FACULTY, RESIDENTS and/or STUDENTS COMMENTS ON PUBLISHED CATs) None available