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Electromyography in diagnosing temporomandibular disorders
Mohammed A Q Al-Saleh1, Susan Armijo-Olivo, Carlos Flores-Mir
1TMD/Orofacial Pain Clinic, School of Dentistry, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada.
Journal of the American Dental Association (1939)
|April 3, 2012
Summary
Electromyography (EMG) is not a reliable diagnostic tool for temporomandibular disorders (TMDs). A systematic review found insufficient evidence to support its use due to low sensitivity and contradictory specificity in diagnostic accuracy studies.
Area of Science:
- Dental diagnostics
- Neuromuscular assessment
- Systematic review methodology
Background:
- Electromyography (EMG) is widely used in dentistry to evaluate masticatory muscle impairments, particularly in temporomandibular disorders (TMDs).
- Concerns exist regarding the psychometric properties and diagnostic accuracy of EMG for TMDs.
Purpose of the Study:
- To critically analyze the existing literature on the accuracy of electromyography (EMG) in diagnosing temporomandibular disorders (TMDs).
- To determine the diagnostic utility of EMG for TMD based on a systematic review of relevant studies.
Main Methods:
- A systematic review was conducted using electronic searches across multiple databases (MEDLINE, Embase, etc.).
- Inclusion criteria were applied to select relevant studies, followed by quality assessment using the QUADAS tool.
- Two studies met the inclusion criteria and were analyzed for diagnostic accuracy parameters.
Main Results:
- Only two studies met the inclusion criteria out of 130 initially identified.
- The analyzed studies reported low sensitivity (0.15–0.69) and inconsistent specificity (0.67–0.98) for EMG in diagnosing TMDs.
- Likelihood ratios and predictive values were unhelpful, and the quality of the included studies was poor.
Conclusions:
- The systematic review found no supporting evidence for the use of electromyography (EMG) in the diagnosis of temporomandibular disorders (TMDs).
- Current evidence suggests EMG is not a reliable diagnostic method for TMD.
