Role of electronic devices in diagnosis of temporomandibular disorders.

The role of electronic devices in the diagnosis of TMD raises the critical question of whether the clinician can gain diagnostically relevant information from them. This is of serious concern in view of the sparse, unreplicated and invalidated scientific evidence linking the use of such devices to TMD diagnosis and subsequent therapy. Until such time as scientific studies, using blinded evaluations to compare TMD patients and controls, demonstrate acceptable levels of reliability, validity, sensitivity and specificity, as well as positive and negative predictive values, the use of such devices will continue to have questionable diagnostic validity and, therefore, will continue to be considered experimental. Thus, clinicians should carefully consider the diagnostic and therapeutic consequences of using electronic devices prior to adding them to their dental armamentarium.