{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T04:59:41Z","timestamp":1792040381672,"version":"4.4.0"},"reference-count":54,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2019,11,29]],"date-time":"2019-11-29T00:00:00Z","timestamp":1574985600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Int J Paed Dentistry"],"published-print":{"date-parts":[[2020,3]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Malocclusion is a common oral health problem in schoolchildren. Literature describing the prevalence of malocclusion varies substantially across China.<\/jats:p><\/jats:sec><jats:sec><jats:title>Aim<\/jats:title><jats:p>This study identified the epidemiological characteristics of malocclusion among Chinese schoolchildren from 1991 to 2018.<\/jats:p><\/jats:sec><jats:sec><jats:title>Design<\/jats:title><jats:p>Six English and Chinese electronic databases were searched through November 2018. The search was supplemented by hand searching to identify relevant surveys. The overall prevalence of malocclusion was estimated by a random\u2010effects meta\u2010analysis model, and variations in different groups were assessed by subgroup meta\u2010analysis.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Thirty\u2010seven eligible articles describing 117\u00a0682 samples were investigated. The pooled national prevalence for malocclusion was 47.92% (95% CI: 58.6%\u201071.9%). For the Angle classification, the overall prevalence rates were 30.07% (95% CI: 25.37%\u201035.48%), 9.91% (95% CI: 7.41%\u201013.79%), and 4.76% (95% CI: 3.85%\u20106.54%) for Class I, Class II, and Class III malocclusion, respectively. A deep overbite (16.67%, 95% CI: 11.50%\u201023.08%) was shown to be the most common trait of malocclusion. When stratified by sex, males had a slightly higher prevalence than females (RR\u00a0=\u00a01.04, 95% CI: 1.01\u20101.06). More importantly, an ascending trend and substantial variations across the country were observed.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Our results confirmed that malocclusion has become a serious oral health problem in Chinese schoolchildren, highlighting the need for proactive interventions at an early age. Moreover, high\u2010quality epidemiological studies on malocclusion are still required.<\/jats:p><\/jats:sec>","DOI":"10.1111\/ipd.12591","type":"journal-article","created":{"date-parts":[[2019,11,2]],"date-time":"2019-11-02T10:29:22Z","timestamp":1572690562000},"page":"144-155","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":49,"title":["Prevalence of malocclusion in Chinese schoolchildren from 1991 to 2018: A systematic review and meta\u2010analysis"],"prefix":"10.1111","volume":"30","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6705-5474","authenticated-orcid":false,"given":"Min","family":"Lin","sequence":"first","affiliation":[{"name":"College of Stomatology Chongqing Medical University Chongqing China"},{"name":"Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences Chongqing 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