{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T09:57:49Z","timestamp":1777456669099,"version":"3.51.4"},"reference-count":29,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2017,12,18]],"date-time":"2017-12-18T00:00:00Z","timestamp":1513555200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J of Oral Rehabilitation"],"published-print":{"date-parts":[[2018,2]]},"abstract":"<jats:title>Summary<\/jats:title><jats:sec><jats:label\/><jats:p>Sleep bruxism (<jats:styled-content style=\"fixed-case\">SB<\/jats:styled-content>) and psychological stress are commonly considered as contributing factors in the aetiology of temporomandibular disorder (<jats:styled-content style=\"fixed-case\">TMD<\/jats:styled-content>) pain. However, the lack of longitudinal studies and fluctuating nature of <jats:styled-content style=\"fixed-case\">SB<\/jats:styled-content>, psychological stress and <jats:styled-content style=\"fixed-case\">TMD<\/jats:styled-content> pain have led to contradictory results regarding the association between the possible aetiological factors and <jats:styled-content style=\"fixed-case\">TMD<\/jats:styled-content> pain. In the present study we investigated the contribution of <jats:styled-content style=\"fixed-case\">SB<\/jats:styled-content> and psychological stress to <jats:styled-content style=\"fixed-case\">TMD<\/jats:styled-content> pain in a longitudinal study of 2 clinical <jats:styled-content style=\"fixed-case\">TMD<\/jats:styled-content> pain cases during a 6\u2010week study protocol. Two female volunteers with clinically diagnosed myalgia based on the Diagnostic Criteria for Temporomandibular Disorders (<jats:styled-content style=\"fixed-case\">DC<\/jats:styled-content>\/<jats:styled-content style=\"fixed-case\">TMD<\/jats:styled-content>) participated in the study. Questionnaires were used to record jaw\u2010muscle pain and psychological stress experience, and an ambulatory polysomnography technique was used to record <jats:styled-content style=\"fixed-case\">SB<\/jats:styled-content> intensity. Visual analysis of the data revealed that the intensity of <jats:styled-content style=\"fixed-case\">TMD<\/jats:styled-content> pain was not hardwired, neither with psychological stress experience nor with increased <jats:styled-content style=\"fixed-case\">SB<\/jats:styled-content> activity. Within the limitations of single\u2010patient clinical cases design, our study suggested that the presence of <jats:styled-content style=\"fixed-case\">TMD<\/jats:styled-content> pain cannot be explained by a simple linear model which takes psychological stress or <jats:styled-content style=\"fixed-case\">SB<\/jats:styled-content> into account. It also seems that psychological stress was a more important predictor factor for <jats:styled-content style=\"fixed-case\">TMD<\/jats:styled-content> pain than <jats:styled-content style=\"fixed-case\">SB<\/jats:styled-content>.<\/jats:p><\/jats:sec>","DOI":"10.1111\/joor.12594","type":"journal-article","created":{"date-parts":[[2017,12,2]],"date-time":"2017-12-02T08:36:38Z","timestamp":1512203798000},"page":"104-109","source":"Crossref","is-referenced-by-count":28,"title":["Long\u2010term variability of sleep bruxism and psychological stress in patients with jaw\u2010muscle pain: Report of two longitudinal clinical cases"],"prefix":"10.1111","volume":"45","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6054-2934","authenticated-orcid":false,"given":"K.","family":"Muzalev","sequence":"first","affiliation":[{"name":"Department of Oral Kinesiology Academic Centre for Dentistry Amsterdam (ACTA) University of Amsterdam and Vrije Universiteit Amsterdam  Amsterdam The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"C. 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