{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T01:09:44Z","timestamp":1787015384089,"version":"build-2736575974"},"reference-count":37,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2025,2,19]],"date-time":"2025-02-19T00:00:00Z","timestamp":1739923200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["32071462"],"award-info":[{"award-number":["32071462"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J Evidence Based Medicine"],"published-print":{"date-parts":[[2025,3]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>This study aimed to investigate the relationship between recurrent aphthous ulcers (RAU) and dysbiosis of the oral microbiota.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      A systematic search was conducted across several databases, including the Cochrane Library, PubMed, Web of Science Core Collection, Embase, Scopus, CBM, CNKI, WanFang, and VIP, to identify relevant studies from the inception of the library until September 20, 2024. All included studies were evaluated for quality using the Newcastle\u2013Ottawa scale. These studies assessed the diversity and abundance of oral microorganisms in patients with RAU in comparison to healthy individuals. Results were synthesized via random\u2010effects meta\u2010analysis (\n                      <jats:italic>I<\/jats:italic>\n                      <jats:sup>2<\/jats:sup>\n                      statistic for heterogeneity). Mean differences (MD) and 95% confidence intervals (CI) were applied to evaluate the pooled effects of outcomes. The systematic review was registered in PROSPERO (CRD42024615516).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      A total of 10 studies involving 343 patients and 348 controls were included in this study, 7 of these were utilized for meta\u2010analysis to conduct a quantitative assessment. The meta\u2010analysis showed that in terms of alpha diversity, saliva samples collected from patients with RAU exhibited a significantly lower Chao 1 index of alpha diversity (MD = \u201341.22, 95% CI \u201364.34 to \u201318.09,\n                      <jats:italic>p<\/jats:italic>\n                      &lt; 0.01), and that patients with ulcerated sites in the oral mucosa demonstrated a higher Chao 1 index when compared to healthy sites within the oral mucosa (MD = 27.48, 95% CI 2.98 to 51.97,\n                      <jats:italic>p<\/jats:italic>\n                      = 0.03).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Significant differences in the Chao 1 index between patients and healthy controls, along with variations in beta diversity and the relative abundance of taxa, indicate that microbial dysbiosis may play a crucial role in the development of RAU.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/jebm.70001","type":"journal-article","created":{"date-parts":[[2025,2,19]],"date-time":"2025-02-19T04:20:03Z","timestamp":1739938803000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Association Between Recurrent Aphthous Ulcers and Oral Biodiversity: A Systematic Review and Meta\u2010Analysis"],"prefix":"10.1111","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0009-0004-9660-1907","authenticated-orcid":false,"given":"Lin","family":"Zhao","sequence":"first","affiliation":[{"name":"West China Hospital of Stomatology Sichuan University  Chengdu Sichuan China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hongyu","family":"Xie","sequence":"additional","affiliation":[{"name":"West China Hospital of Stomatology Sichuan University  Chengdu Sichuan China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lunwei","family":"Kang","sequence":"additional","affiliation":[{"name":"West China Hospital of Stomatology Sichuan University  Chengdu Sichuan China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ga","family":"Liao","sequence":"additional","affiliation":[{"name":"Department of Information Management Department of Stomatology Informatics West China Hospital of Stomatology, Sichuan University  Chengdu Sichuan China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2025,2,19]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.5826\/dpc.1104a99"},{"issue":"1","key":"e_1_2_6_3_1","first-page":"73","article-title":"Recurrent Aphthous Stomatitis (RAS): Guideline for Differential Diagnosis and Management","volume":"23","author":"Milia E.","year":"2022","journal-title":"European Journal of Paediatric Dentistry"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1601-0825.2005.01143.x"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1111\/dth.15500"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.1093\/rheumatology\/keab581"},{"issue":"2","key":"e_1_2_6_7_1","first-page":"75","article-title":"Decreased CD4+\/CD8+ Ratio in Major Type of Recurrent Aphthous Ulcers: Comparing Major to Minor Types of Ulcers","volume":"16","author":"Bachtiar E. 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