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In the military, those data are available because recruits are routinely assessed with a clinical and radiological examination at the start of their career. This study aimed to identify differences in oral health status of Dutch Armed Forces recruits between cohorts, departments, sex, age and rank, with DMF-T, endodontic treatment and dental trauma as outcome measures.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>Data from Electronic Patient Files from all recruits enlisted in 2000, 2010 and 2020 were used for analysis in a hurdle model resulting in the estimated cohort effect, controlled for the demographic variables. The total number of recruits was 5,764. Due to the retrospective character of the study a proxy was used to compose D-T and dental trauma.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>The mean DMF-T number in recruits decreases from 5.3 in cohort 2000 to 4.13 in cohort 2010 and 3.41 in cohort 2020. The percentage of endodontically treated teeth increases from 6% in cohort 2000 to respectively 9% in 2010 and 8% in 2020. The percentage of recruits showing signs of dental trauma did not change significantly between cohort 2000 (3.1%) and cohort 2010 and 2020 (both 2.7%).<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusions<\/jats:title>\n                <jats:p>Oral health in Armed Forces recruits is improving over the years, following a similar trend as the general population in the Netherlands. Lower SES represented by enlisted rank showed substantial lower oral health status.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s12903-024-04687-8","type":"journal-article","created":{"date-parts":[[2024,8,8]],"date-time":"2024-08-08T13:03:53Z","timestamp":1723122233000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Oral health status of Dutch Armed Forces recruits in the years 2000, 2010 and 2020, a retrospective repeated cross-sectional study"],"prefix":"10.1186","volume":"24","author":[{"given":"A. J.","family":"de la Court","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"N. J. M.","family":"Opdam","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"E. 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Most of our recruits have a contract for a few years and leave the military afterwards. Name and address details are not kept after leaving military service. Therefore we could not contact them and ask permission directly. According to the legal regulation in The Netherlands and regulatory requirements of the Ministry of Defense, an opt-out procedure was followed, using the digital platforms of the Ministry of Defense. The research proposal was published on these platforms and an option to withdraw participation was organized.The Central Representative Body of all military personnel in The Netherlands also approved the proposal and stated: \u2018no objection\u2019 in the official minutes of their meeting.Approval of this study was also obtained by the Surgeon General of the Ministry of Defense and for the GDPR implementation act a DPIA (Data Protection Impact Assessment) was performed with a data management plan and published in the GDPR \/ DPIA register of our government (20210215 DPIA DTD-MWO Oral Health Care and Risk Assessment in the Dutch Armed Forces).","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"value":"Not applicable.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"The authors declare no competing interests.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"912"}}