Abstract:
BACKGROUND:Temporomandibular disorder (TMD) development in fibromyalgia syndrome (FMS) is not yet fully understood, but altered neuromuscular control in FMS may play a role in triggering TMD. OBJECTIVE:The purpose of this study was to verify the association between neuromuscular control and chronic facial pain in groups of patients with FMS and TMD. DESIGN:A cross-sectional study was conducted. METHODS:This study involved an analysis of facial pain and electromyographic activity of the masticatory muscles in patients with FMS (n=27) and TMD (n=28). All participants were evaluated according to Research Diagnostic Criteria for Temporomandibular Disorders and surface electromyography (SEMG). Myoelectric signal calculations were performed using the root mean square and median frequency of signals. RESULTS:The data revealed premature interruption of masticatory muscle contraction in both patient groups, but a significant correlation also was found between higher median frequency values and increased facial pain. This correlation probably was related to FMS because it was not found in patients with TMD only. Facial pain and increased SEMG activity during mandibular rest also were positively correlated. LIMITATIONS:Temporal conclusions cannot be drawn from the study. Also, the study lacked a comparison group of patients with FMS without TMD as well as a control group of individuals who were healthy. CONCLUSIONS:Altered neuromuscular control in masticatory muscles may be correlated with perceived facial pain in patients with FMS.
journal_name
Phys Therjournal_title
Physical therapyauthors
Gui MS,Pedroni CR,Aquino LM,Pimentel MJ,Alves MC,Rossini S,Reimão R,Berzin F,Marques AP,Rizzatti-Barbosa CMdoi
10.2522/ptj.20120338subject
Has Abstractpub_date
2013-08-01 00:00:00pages
1092-101issue
8eissn
0031-9023issn
1538-6724pii
ptj.20120338journal_volume
93pub_type
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