Journal
PAIN
Volume 127, Issue 1-2, Pages 151-160Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.pain.2006.08.028
Keywords
gabapentin; chronic muscle pain; orofacial pain; masticatory muscles; TMD; antiepileptic agents
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Chronic masticatory myalgia (CMM) can be defined as constant pain in the masticatory muscles for more than 6 months and is influenced by the central nervous system. The antiepileptic agent gabapentin acts centrally and is used for managing different types of chronic pain conditions. The objective of this study was to evaluate the analgesic action of gabapentin on CMM. In this 12-week randomized controlled clinical trial 50 patients were randomly allocated into two study groups: 25 received gabapentin and 25 received placebo. The outcome measures utilized were pain reported on a VAS (VAS-pain), Palpation Index (PI) and impact of CMM on daily functioning reported on a VAS (VAS-function). Thirty-six patients completed the study. Gabapentin showed to be clinically and statistically superior to placebo in reducing pain reported by patients (gabapentin = 51.04%; placebo = 24.30%; P = 0.037), masticatory muscle hyperalgesia (gabapentin = 67.03%, placebo = 14.37%; P = 0.001) and impact of CMM oil daily functioning (gabapentin - 57.70%; placebo = 16.92%; P = 0.022). It can be concluded from this study that gabapentin is effective for the management of CMM. (c) 2006 International Association for the Study of Pain. Published by Elsevier B.V. All rights reserved.
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