{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T14:25:43Z","timestamp":1790605543459,"version":"4.1.0"},"reference-count":41,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2021,7,12]],"date-time":"2021-07-12T00:00:00Z","timestamp":1626048000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J of Oral Rehabilitation"],"published-print":{"date-parts":[[2021,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Little is known about wake\u2010time masseter activity of patients with masticatory muscle pain in real\u2010life settings.<\/jats:p><\/jats:sec><jats:sec><jats:title>Objectives<\/jats:title><jats:p>The aims of this study were (1) to assess wake\u2010time masseter activity of women with masticatory muscle pain (MMP) and compare it with that of pain\u2010free women; and (2) to investigate the association between objectively measured masseter contractions and self\u2010reported oral behaviours.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Adult women (<jats:italic>N<\/jats:italic>\u00a0=\u00a027) diagnosed with MMP were age\u2010matched with pain\u2010free women (<jats:italic>N<\/jats:italic>\u00a0=\u00a026). The electromyographic (EMG) activity of the masseter muscle when awake was recorded unilaterally for two consecutive days. The number of contraction episodes and relative contraction time (%) were calculated using cut\u2010off thresholds of 3%, 5% and 10% of maximum voluntary contraction (MVC). Self\u2010reported daytime oral activity was assessed using the Oral Behaviours Checklist (OBC, items 3\u201321). Data were analysed using univariate tests and mixed\u2010model analyses.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The number of contraction episodes was similar between groups for all detection thresholds, but the relative contraction time at the lower detection thresholds (i.e. 3% MVC and 5% MVC) was significantly longer (1.5\u2010fold) in the MMP than in the pain\u2010free group. The OBC scores were significantly higher in the women with MMP than in controls, but no positive association could be found between EMG variables and OBC scores.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Women with MMP engage in low\u2010level masseter muscle contractions, which last longer than those of pain\u2010free controls. There was no relationship between self\u2010reported oral behaviours and masseter activity when awake. These findings support the notion that prolonged low\u2010level clenching when awake may play a role in the pathophysiology of MMP.<\/jats:p><\/jats:sec>","DOI":"10.1111\/joor.13219","type":"journal-article","created":{"date-parts":[[2021,6,29]],"date-time":"2021-06-29T17:05:56Z","timestamp":1624986356000},"page":"979-988","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":23,"title":["Oral behaviours and wake\u2010time masseter activity in patients with masticatory muscle pain"],"prefix":"10.1111","volume":"48","author":[{"given":"D.","family":"Ramanan","sequence":"first","affiliation":[{"name":"Discipline of Orthodontics Sir John Walsh Research Institute University of Otago Dunedin New Zealand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S.","family":"Palla","sequence":"additional","affiliation":[{"name":"University of Zurich Zurich Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"H.","family":"Bennani","sequence":"additional","affiliation":[{"name":"Discipline of Orthodontics Sir John Walsh Research Institute University of Otago Dunedin New Zealand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A.","family":"Polonowita","sequence":"additional","affiliation":[{"name":"Discipline of Oral Medicine Sir John Walsh Research Institute University of Otago Dunedin New Zealand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4516-647X","authenticated-orcid":false,"given":"M.","family":"Farella","sequence":"additional","affiliation":[{"name":"Discipline of Orthodontics Sir John Walsh Research Institute University of Otago Dunedin New Zealand"},{"name":"Department of Surgical Sciences University of Cagliari Cagliari Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2021,7,12]]},"reference":[{"key":"e_1_2_10_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jpain.2013.09.010"},{"key":"e_1_2_10_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jpain.2013.07.018"},{"issue":"3","key":"e_1_2_10_4_1","first-page":"185","article-title":"Nonfunctional tooth contact in healthy controls and patients with myogenous facial pain","volume":"21","author":"Chen CY","year":"2007","journal-title":"J Orofac Pain"},{"key":"e_1_2_10_5_1","doi-asserted-by":"publisher","DOI":"10.1179\/crn.2005.027"},{"key":"e_1_2_10_6_1","doi-asserted-by":"publisher","DOI":"10.1177\/154405910208100412"},{"key":"e_1_2_10_7_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-2842.2009.02033.x"},{"key":"e_1_2_10_8_1","doi-asserted-by":"publisher","DOI":"10.11607\/ofph.1885"},{"issue":"4","key":"e_1_2_10_9_1","first-page":"1139","article-title":"Frequency of daytime tooth clenching episodes in individuals affected by masticatory muscle pain and pain\u2010free controls during standardized ability tasks","volume":"21","author":"Cioffi I","year":"2017","journal-title":"ClinOral Investig"},{"issue":"1","key":"e_1_2_10_10_1","first-page":"146","article-title":"A pilot study of ambulatory masticatory muscle activities in temporomandibular joint disorders diagnostic groups","volume":"18","author":"Iwasaki LR","year":"2015","journal-title":"OrthodCraniofacRes"},{"key":"e_1_2_10_11_1","doi-asserted-by":"publisher","DOI":"10.1177\/0022034517704375"},{"key":"e_1_2_10_12_1","doi-asserted-by":"publisher","DOI":"10.1111\/ocr.12077"},{"key":"e_1_2_10_13_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jpor.2017.09.003"},{"key":"e_1_2_10_14_1","first-page":"105","article-title":"Bruxism and masticatory muscle pain. 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