{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,17]],"date-time":"2026-08-17T15:27:23Z","timestamp":1786980443619,"version":"build-2736575974"},"reference-count":29,"publisher":"Springer Science and Business Media LLC","issue":"8","license":[{"start":{"date-parts":[[2024,7,8]],"date-time":"2024-07-08T00:00:00Z","timestamp":1720396800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2024,7,8]],"date-time":"2024-07-08T00:00:00Z","timestamp":1720396800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"name":"Suleyman Demirel University"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Clin Oral Invest"],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>The study aimed to investigate the sinus membrane thickness (SMT) adjacent to healthy endodontically-treated maxillary molars with or without protruded apical foramen into the sinus cavity using cone-beam computed tomography (CBCT).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Materials and methods<\/jats:title>\n                    <jats:p>Images of 207 non-smoker patients aged 18\u201340 were retrospectively analyzed, 140 were endodontically treated, and 136 were without endodontic treatment. Patients with any sinus pathology, teeth that have symptoms, or poor root filling were excluded. Study groups consisted of Group EM-I (endodontically treated and protruded apical foramen), Group EM-C (endodontically treated and contacted apical foramen), and similarly without endodontic treatment; Group M-I and Group M-C. SMT upon the mesial, distal, and palatal roots was measured. One-way ANOVA and Student\u2019s t-tests were performed.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Group EM-I had the thickest sinus membrane compared to other groups (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.013). SMT values were 2.37\u20132.60\u00a0mm in Group EM-I, and 1.34\u20131.58\u00a0mm in other groups. Thickening (&gt;\u20092\u00a0mm) percentages were 33.45% in Group EM-I and between 4.25 and 8.25% in other groups. No statistical difference was detected between first and second molars and genders (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&gt;\u20090.05).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>When the apical foramen protruded into the sinus cavity, the conventional root canal treatment caused a minimal (between 2.37\u00a0mm and 2.60\u00a0mm) sinus membrane thickening with a rate of 33.45% based upon CBCT examinations.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1007\/s00784-024-05815-y","type":"journal-article","created":{"date-parts":[[2024,7,8]],"date-time":"2024-07-08T03:02:10Z","timestamp":1720407730000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Sinus membrane thickness of healthy endodontically treated maxillary molars"],"prefix":"10.1007","volume":"28","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5676-0293","authenticated-orcid":false,"given":"Deniz","family":"Yan\u0131k","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0505-867X","authenticated-orcid":false,"given":"Ahmet Mert","family":"Nalbanto\u011flu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"K\u00fcr\u015fat","family":"Er","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2024,7,8]]},"reference":[{"issue":"1","key":"5815_CR1","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1186\/s12903-020-01122-6","volume":"20","author":"T Van Den Munckhof","year":"2020","unstructured":"Van Den Munckhof T, Patel S, Koller G, Berkhout E, Mannocci F, Foschi (2020) F Schneiderian membrane thickness variation following endodontic procedures: a retrospective cone beam computed tomography study. 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