title: Effects of localized versus widespread TMD pain on sleep parameters in patients with bruxism: A single-night polysomnographic study.
abstract: OBJECTIVE
  The purpose of this study was to investigate whether the presence of concomitant widespread pain could influence the polysomnographic characteristics of patients with Sleep Bruxism(SB) and chronic masticatory muscle pain(TMD).
  
  
  METHODS
  20 SB/TMD patients (17 women and 3 men) were evaluated according to the RDC/TMD questionnaire; and were divided into two groups according to the absence (Group A) or presence (Group B) of widespread pain. They were evaluated in a one night polysomnography paradigm.
  
  
  RESULTS
  Group B had lower sleep efficiency (p=0.034) and higher mean age (p=0.000) than Group A. Self-reported orofacial pain complaints, clinical and emotional aspects (RDC/TMD Axis I and II), and SB PSG parameters were similar in both groups; all patients had masticatory myofascial pain and the pain characteristics were bilateral location (95.0%) and tightness/pressure quality (70.0%).
  
  
  CONCLUSIONS
  At a single-night PSG, SB/TMD patients with widespread pain presented lower PSG sleep efficiency and higher mean age.
authors.affiliation: Orofacial Pain Team of Dentistry, Division of Hospital das Clínicas, Medical School of Universidade de São Paulo (USP), Brazil; Pain Center of Neurology, Department of Medical School of Universidade de São Paulo (USP), Brazil. Electronic address: jose.ttsiqueira@hc.fm.usp.br.
authors.forename: José Tadeu Tesseroli
authors.initials: JT
authors.lastname: de Siqueira
authors.affiliation: Araraquara Dentistry School, Universidade Estadual Paulista (UNESP), Brazil.
authors.forename: Cinara Maria
authors.initials: CM
authors.lastname: Camparis
authors.affiliation: Orofacial Pain Team of Dentistry, Division of Hospital das Clínicas, Medical School of Universidade de São Paulo (USP), Brazil; Pain Center of Neurology, Department of Medical School of Universidade de São Paulo (USP), Brazil.
authors.forename: Silvia Regina Dowgan Tesseroli
authors.initials: SR
authors.lastname: de Siqueira
authors.affiliation: Pain Center of Neurology, Department of Medical School of Universidade de São Paulo (USP), Brazil.
authors.forename: Manoel Jacobsen
authors.initials: MJ
authors.lastname: Teixeira
authors.affiliation: Psychobiology Department and Sleep Institute, Universidade Federal de São Paulo (UNIFESP), Brazil.
authors.forename: Lia
authors.initials: L
authors.lastname: Bittencourt
authors.affiliation: Psychobiology Department and Sleep Institute, Universidade Federal de São Paulo (UNIFESP), Brazil.
authors.forename: Sérgio
authors.initials: S
authors.lastname: Tufik
mesh_terms: D000328:Adult; D005157:Facial Pain / Q000503:physiopathology*; D005260:Female; D006801:Humans; D008297:Male; D008410:Masticatory Muscles / Q000503:physiopathology*; D008875:Middle Aged; D010147:Pain Measurement; D017286:Polysomnography; D020186:Sleep Bruxism / Q000503:physiopathology*; D011795:Surveys and Questionnaires; D013705:Temporomandibular Joint Disorders / Q000503:physiopathology*
keywords: Myofascial pain; Orofacial pain; PSG; RDC/TMD questionnaire; Sleep bruxism; Temporomandibular disorders