{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,29]],"date-time":"2026-07-29T11:57:47Z","timestamp":1785326267851,"version":"3.55.0"},"reference-count":53,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2025,9,18]],"date-time":"2025-09-18T00:00:00Z","timestamp":1758153600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2025,9,18]],"date-time":"2025-09-18T00:00:00Z","timestamp":1758153600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100009687","name":"Uniwersytet Medyczny im. Piast\u00f3w Slaskich we Wroclawiu","doi-asserted-by":"publisher","award":["SUBZ.A500.25.099"],"award-info":[{"award-number":["SUBZ.A500.25.099"]}],"id":[{"id":"10.13039\/501100009687","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Sleep Research"],"published-print":{"date-parts":[[2026,6]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    The protective properties of sleep bruxism (SB) for obstructive sleep apnea (OSA) are often suggested in the literature. The main objective of the present study is to assess the alleged protective effects of SB on the duration of respiratory events and blood saturation in OSA patients. The study involved data from 241 subjects with mild and moderate OSA who underwent polysomnography, which was evaluated according to American Academy of Sleep Medicine guidelines. Two cut\u2010off points for SB diagnosis were established\u2014bruxism episodes index (BEI)\u2009=\u20092 and BEI\u2009=\u20094. Out of the 241 patients, 66 subjects did not have SB (BEI &lt;\u20092), while 175 were bruxers (BEI \u2265\u20092) and 97 of them had severe bruxism (BEI \u2265\u20094). SB patients had a significantly increased duration of hypopnea and apnea\u2009+\u2009hypopnea in both BEI \u2265\u20092 (25.88 vs. 23.28,\n                    <jats:italic>p<\/jats:italic>\n                    \u2009=\u20090.001 and 24.04 vs. 21.97,\n                    <jats:italic>p<\/jats:italic>\n                    \u2009=\u20090.004, respectively) and BEI \u2265\u20094 (26.17 vs. 24.49,\n                    <jats:italic>p<\/jats:italic>\n                    \u2009=\u20090.038 and 24.30 vs. 22.92,\n                    <jats:italic>p<\/jats:italic>\n                    \u2009=\u20090.040, respectively) groups. The oxygen desaturation index (47.64 vs. 51.10,\n                    <jats:italic>p<\/jats:italic>\n                    \u2009=\u20090.004) was decreased in BEI \u2265\u20092 subjects. Snore % was decreased in the BEI \u2265\u20094 group (21.22 vs. 26.43,\n                    <jats:italic>p<\/jats:italic>\n                    \u2009=\u20090.039). Average pulse was lower in the BEI \u2265\u20092 group (60.58 vs. 64.30,\n                    <jats:italic>p<\/jats:italic>\n                    \u2009=\u20090.0009). These results contradict the hypothesis that SB episodes shorten the apnea\u2013hypopnea events in OSA patients. Protective SB properties might be limited to milder airway obstruction or might diminish over time. The relationship between SB and OSA is complex and needs further extensive research.\n                  <\/jats:p>","DOI":"10.1111\/jsr.70206","type":"journal-article","created":{"date-parts":[[2025,9,18]],"date-time":"2025-09-18T10:04:02Z","timestamp":1758189842000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Sleep Bruxism as a Protective Factor in the Mild and Moderate Obstructive Sleep Apnea: A Polysomnographic Study"],"prefix":"10.1111","volume":"35","author":[{"ORCID":"https:\/\/orcid.org\/0009-0005-7202-5420","authenticated-orcid":false,"given":"Jakub","family":"Przegra\u0142ek","sequence":"first","affiliation":[{"name":"Clinical Department of Diabetology, Hypertension and Internal Diseases Wroclaw Medical University  Wroclaw Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dorian","family":"Nowacki","sequence":"additional","affiliation":[{"name":"Department of Human Nutrition Wroclaw University of Environmental and Life Sciences  Wroclaw Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Piotr","family":"Niemiec","sequence":"additional","affiliation":[{"name":"Jan Mikulicz\u2010Radecki University Clinical Hospital  Wroclaw Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mieszko","family":"Wi\u0119ckiewicz","sequence":"additional","affiliation":[{"name":"Department of Experimental Dentistry Wroclaw Medical University  Wroclaw Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anna","family":"Wojakowska","sequence":"additional","affiliation":[{"name":"Clinical Department of Diabetology, Hypertension and Internal Diseases Wroclaw Medical University  Wroclaw Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Katarzyna","family":"Madziarska","sequence":"additional","affiliation":[{"name":"Clinical Department of Diabetology, Hypertension and Internal Diseases Wroclaw Medical University  Wroclaw Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1283-8460","authenticated-orcid":false,"given":"Helena","family":"Martynowicz","sequence":"additional","affiliation":[{"name":"Clinical Department of Diabetology, Hypertension and Internal Diseases Wroclaw Medical University  Wroclaw Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2025,9,18]]},"reference":[{"key":"e_1_2_10_2_1","volume-title":"International Classification of Sleep Disorders","author":"American Academy of Sleep 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