title: Evaluation of Efficacy of Ultrasonography in the Assessment of Transcutaneous Electrical Nerve Stimulation in Subjects with Myositis and Myofascial Pain.
abstract: BACKGROUND
  The study aimed to determine if ultrasonography of masseter can be used to evaluate the outcome of transcutaneous electrical nerve stimulation (TENS) in subjects with temporomandibular disorders (TMDs) such as myositis and myofascial pain.
  
  
  METHODS
  Fifteen TMD subjects with myofascial pain/myositis who satisfied the RDC/McNeil criteria were included in the study. All the subjects were administered TENS therapy for a period of 6 days (30 minutes per session). The mouth opening (in millimeters) and severity of pain (visual analogue scale score) and ultrasonographic thickness of the masseter (in millimeters) in the region of trigger/tender areas was assessed in all the subjects both prior and post TENS therapy. A comparison of the pre-treatment and post-treatment values of the VAS score, mouth opening and masseter thickness was done with the help of a t-test.
  
  
  RESULTS
  There was a significant reduction in the thickness of masseter muscle (P = 0.028) and VAS scores (P < 0.001) post TENS therapy. There was also a significant improvement in the mouth opening (P = 0.011) post TENS therapy.
  
  
  CONCLUSIONS
  In the present study, ultrasonography was found to be an effective measuring tool in the assessment of TENS therapy in subjects with myositis and myofascial pain.
authors.affiliation: Department of Oral Medicine and Radiology, D A P M R V Dental College, Bangalore, India.
authors.forename: Seema
authors.initials: S
authors.lastname: Patil
authors.affiliation: Department of Oral Medicine and Radiology, D A P M R V Dental College, Bangalore, India.
authors.forename: Asha R
authors.initials: AR
authors.lastname: Iyengar
authors.affiliation: Department of Oral Medicine and Radiology, D A P M R V Dental College, Bangalore, India.
authors.forename: Ramya Madhuri
authors.initials: RM
authors.lastname: Kotni
authors.affiliation: Department of Oral Medicine and Radiology, D A P M R V Dental College, Bangalore, India.
authors.forename: Subash
authors.initials: S
authors.lastname: B V
authors.affiliation: Department of Oral Medicine and Radiology, D A P M R V Dental College, Bangalore, India.
authors.forename: Revan Kumar
authors.initials: RK
authors.lastname: Joshi
keywords: Mobility limitation; Myofascial pain; Temporomandibular Joint Diseases; Transcutaneous electric nerve stimulation; Ultrasonography; Visual Analog Pain Scale
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