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Therefore, this multicenter cohort study aimed to report about the effectiveness of orthodontic treatments in Germany and to identify potential influencing factors.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>A total of 586\u00a0patients from seven German study centers were screened for this cohort study, of which 361\u00a0patients were recruited at the end of their orthodontic treatment. Of these, 26\u00a0patients had missing study models and\/or missing treatment information. Thus, 335\u00a0participants were included. The severity of malocclusion was rated using the Peer Assessment Rating (PAR) Index at baseline (T0) retrospectively and\u2014prospectively\u2014after the retention period (T1). Practitioner-, treatment- and patient-related information were analyzed in order to detect potential predictive factors for treatment effectiveness.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>Study participants (202 female and 133 male) were on average 14.8 (standard deviation [SD]\u202f\u00b1\u20096.1) years old at start of active treatment. Average PAR score at T0 was 25.96 (SD\u202f\u00b1\u200910.75) and mean posttreatment PAR score was 3.67 (SD\u202f\u00b1\u20092.98) at T1. An average decrease of total PAR score by 22.30\u00a0points (SD\u202f\u00b1\u200910.73) or 83.54% (SD\u202f\u00b1\u200914.58; <jats:italic>p<\/jats:italic>\u202f&lt;\u20090.001) was detected. Furthermore, 164 treatments (49.1%) were categorized as \u2018greatly improved\u2019 but only 3\u00a0treatments (0.9%) as \u2018worse or no different\u2019; 81.5% of all cases finished with a\u00a0high-quality treatment outcome (\u22645 PAR points at T1). Logistic regression analyses detected staff experience as a\u00a0significant predictive factor for high-quality results (odds ratio 1.27, <jats:italic>p<\/jats:italic>\u202f=\u20090.001, 95% confidence interval 1.11\u20131.46).<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>The improvement rate among this selected German cohort indicated an overall very good standard of orthodontic treatment. Staff experience proved to be a\u00a0predictive factor for high-quality results.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1007\/s00056-021-00304-3","type":"journal-article","created":{"date-parts":[[2021,6,17]],"date-time":"2021-06-17T19:02:50Z","timestamp":1623956570000},"page":"291-306","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["Quality of orthodontic care\u2014A\u00a0multicenter cohort study in Germany","Kieferorthop\u00e4dische Behandlungsqualit\u00e4t\u00a0\u2013 Eine nationale, multizentrische Querschnittsstudie"],"prefix":"10.1007","volume":"83","author":[{"given":"I.","family":"Graf","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"N. 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Clin Oral Invest 5(1):57\u201362","journal-title":"Clin Oral Invest"}],"container-title":["Journal of Orofacial Orthopedics \/ Fortschritte der Kieferorthop\u00e4die"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s00056-021-00304-3.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1007\/s00056-021-00304-3\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s00056-021-00304-3.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2022,8,22]],"date-time":"2022-08-22T15:07:00Z","timestamp":1661180820000},"score":1,"resource":{"primary":{"URL":"https:\/\/link.springer.com\/10.1007\/s00056-021-00304-3"}},"subtitle":["Part\u00a01: Evaluation of effectiveness of orthodontic treatments and predictive factors","Teil\u00a01: Evaluierung der Effektivit\u00e4t kieferorthop\u00e4discher Behandlungen und pr\u00e4diktive Faktoren"],"short-title":[],"issued":{"date-parts":[[2021,6,17]]},"references-count":42,"journal-issue":{"issue":"5","published-print":{"date-parts":[[2022,9]]}},"alternative-id":["304"],"URL":"https:\/\/doi.org\/10.1007\/s00056-021-00304-3","relation":{},"ISSN":["1434-5293","1615-6714"],"issn-type":[{"value":"1434-5293","type":"print"},{"value":"1615-6714","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,6,17]]},"assertion":[{"value":"19 November 2020","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"28 March 2021","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"17 June 2021","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"I.\u00a0Graf, N.C.\u00a0Bock, T.\u00a0Bartzela, V.\u00a0R\u00f6per, U.\u00a0Schumann, K.\u00a0Reck, H.\u00a0Christ, K.\u00a0H\u00f6fer, U.\u00a0Fritz, D.\u00a0Wiechmann, P.-G.\u00a0Jost-Brinkmann, M.\u00a0Wolf, S.\u00a0Ruf and B.\u00a0Braumann declare that they have no competing interests. One of the authors, D.\u00a0Wiechmann, founded the company that made the lingual brackets mainly used in this study. Yet, D.\u00a0Wiechmann and I.\u00a0Graf\u2014as well as all other authors\u2014declare that this had no influence on the present study, its data analyses and research outcome.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"This multicenter cohort study was approved by all corresponding ethics committees with the leading one being the Ethics Committee of the University Hospital of Cologne (#14-425). The recruitment and monitoring procedures were defined with the Clinical Trials Center of the University Hospital of Cologne prior to study start. Written informed consent to participate in the form of signed informed consent from patients and, if applicable, from their legal guardians was mandatory.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical standards"}}]}}