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All dentulous patients aged 18\u201370 were included in the study; those with physical or mental disabilities or genetic disorders were excluded. Validated research-made questionnaires and clinical dental examinations were used to diagnose SB, OSA, and GERD. Statistical analysis was performed to study possible associations. The significance level was set at\n                      <jats:italic>p<\/jats:italic>\n                      \u2009\u2264\u20090.05.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Nine hundred ninety-one subjects participated in this study. The prevalence of SB was 13.0%. The mean and standard deviation (SD) of the OSA score in sleep bruxers were 1.48 (1.55), as opposed to 1.35 (1.5) for non-sleep bruxers, showing no statistical significance with\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.388. The prevalence of GERD in the population was 22.7%; in sleep bruxers, 36.4% and in non-sleep bruxers, 20.7%, showing high statistical significance. The mean GERD score for sleep bruxers was 7.24 (2.36), as opposed to 6.69 (1.79) for non-sleep bruxers, also showing statistical significance with\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.002.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>The Egyptian population has a high prevalence of SB (13.0%). An association between SB and GERD was manifested. However, no relation between SB and OSA was found.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1186\/s12903-026-07847-0","type":"journal-article","created":{"date-parts":[[2026,2,26]],"date-time":"2026-02-26T07:05:15Z","timestamp":1772089515000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Association of sleep bruxism with obstructive sleep apnea and gastroesophageal reflux disease: a cross-sectional study in Egyptian governmental dental clinics"],"prefix":"10.1186","volume":"26","author":[{"given":"Hadiel","family":"Zamzam","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eman M.","family":"Ibreheem","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Asmaa N.","family":"Elboraey","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mennatallah Mohamed","family":"Elhoteiby","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ahmed","family":"Gharib","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Enas","family":"Sabry","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Noha","family":"Adel","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ali","family":"Yasser","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Magda I.","family":"Ramzy","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Amani R.","family":"Moussa","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,2,26]]},"reference":[{"issue":"1","key":"7847_CR1","doi-asserted-by":"publisher","first-page":"2","DOI":"10.1111\/joor.12011","volume":"40","author":"F Lobbezoo","year":"2013","unstructured":"Lobbezoo F, Ahlberg J, Glaros AG, Kato T, Koyano K, Lavigne GJ, de Leeuw R, Manfredini D, Svensson P, Winocur E. 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