{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,20]],"date-time":"2025-10-20T18:58:26Z","timestamp":1760986706030,"version":"3.40.5"},"reference-count":27,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2023,4,10]],"date-time":"2023-04-10T00:00:00Z","timestamp":1681084800000},"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":["82071143"],"award-info":[{"award-number":["82071143"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Orthod Craniofacial Res"],"published-print":{"date-parts":[[2023,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objectives<\/jats:title><jats:p>The aims of this study were to evaluate the effect of related factors that influence orthodontic treatment time and to identify the predictors of orthodontic treatment duration in a Chinese population.<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and Methods<\/jats:title><jats:p>Information for 29 sociodemographic, malocclusion and orthodontic treatment characteristics was collected. Patients were divided into two groups: the duration \u226424\u2009months group and duration &gt;24\u2009months group. The treatment dates of the initial visit and end of orthodontic treatment were obtained to calculate duration. The data were subjected to univariate and multivariate logistic regression modelling to quantify the association between characteristics and the treatment duration; odds ratios (ORs) and 95% confidence intervals (95% CIs) are reported.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Of 2120 patients, 704 patients (mean age, 15.9\u2009\u00b1\u20096.0\u2009years) were included. Age, extraction, Bolton ratio (overall), rotated teeth, overjet and crowding (lower arch) were predictors for duration. The nomogram based on predictive factors exhibited strong discrimination ability, with concordance indices of 0.755 (95% CI\u2009=\u20090.712\u20100.798) in the training cohort model and 0.717 (95% CI\u2009=\u20090.647\u20100.787) in the validation cohort model. The calibration curves for the training and validation cohorts showed that the probabilities of the nomogram agreed well with actual probabilities.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Young age, non\u2010extraction and severe crowding (lower arch) can increase the chance of durations of \u226424\u2009months. Rotated teeth, excessive overjet and Bolton ratio (overall) can increase the chance of durations of &gt;24\u2009months.<\/jats:p><\/jats:sec>","DOI":"10.1111\/ocr.12661","type":"journal-article","created":{"date-parts":[[2023,4,10]],"date-time":"2023-04-10T15:05:49Z","timestamp":1681139149000},"page":"650-659","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Effect of socioeconomic and malocclusion\u2010related factors on duration of orthodontic treatment by fixed appliance: A retrospective study"],"prefix":"10.1111","volume":"26","author":[{"given":"Xueming","family":"Shi","sequence":"first","affiliation":[{"name":"Department of Orthodontics The Affiliated Stomatological Hospital of Nanjing Medical University  Nanjing China"},{"name":"Jiangsu Province Key Laboratory of Oral Diseases Nanjing Medical University  Nanjing China"},{"name":"Jiangsu Province Engineering Research Center of Stomatological Translational 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