The Immediate Effect of Pulse Radio Frequency Energy (PRFE) on Ipsilateral and Contralateral Temporomandibular Joint Pain and Surface Electromyography Levels (sEMG).
Abstract: This cross-sectional, double blind randomized study evaluated the immediate effects of Pulse Radio Frequency Energy (PRFE) on ipsilateral and contralateral Temporomandibular joint (TMJ) pain. Thirty-eight subjects, 5 male and 33 female, with unilateral TMJ pain participated in this investigation (age 21 to 62 years). Subjects were randomly assigned to one of two groups: (1) one group rec... read moreeived PRFE using the Energex unit (Orthsonix, Inc. Tappen N.J) on the ipsilateral side (16 subjects) and (2) the other group received PRFE on the contralateral side (22 subjects). The immediate effects were assessed by surface electromyography (sEMG), which recorded resting values of the anterior temporalis, masseter, sternocleidomastoid and trapezius muscles. An 11-point (0-10) numeric rating scale (NRS) was used to assess pain in the face, ear, neck, temporalis, masseter, and TMJ. Statistical analysis involved comparing, by ANOVA, the mean difference within the same subject between the ipsilateral and contralateral sides. A Two-sample t-test was utilized to compare between treatment groups. Application of PRFE demonstrated a significant effect in terms of changes in resting mean (SD) sEMG values on the ipsilateral side for anterior temporalis 0.08 (0.45), p=0.5742 and masseter muscle 0.20(0.45), p=0.658. No significant change in resting mean sEMG values was seen for the contralateral side. Significant pain score mean (SD) reduction was seen on ipsilateral ear 0.74(1.29), p=0.0011, face 0.71(1.59), p= 0.0092, TMJ 0.61(1.67), p=0.0315, masseter 1.26(2.2), p=0.0011 and neck 0.76(1.17), p=0.0003. On the contralateral side significant mean (SD) changes were seen with anterior temporalis 0.74(1.94), p= 0.0248, face 0.63(1.48), p=0.0122, TMJ 0.61(1.69), p=0.0331, masseter 1.39(2.15), p=0.0003 and neck pain 0.55(1.37), p=0.0175. These findings suggest that treating an ipsilateral joint for pain has a positive effect on the contralateral side and that the effect is not limited to joint pain but also pertains to muscle pain.
Thesis (M.S.)--Tufts University, 2011.
Submitted to the Dept. of Other.
Advisor: Brijesh Chandwani.
Committee: Noshir Mehta, Paul Stark, and Ronald Kulich.
Keyword: Dentistry.read less