{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,29]],"date-time":"2025-10-29T03:37:09Z","timestamp":1761709029496,"version":"3.38.0"},"reference-count":5,"publisher":"SAGE Publications","issue":"4","license":[{"start":{"date-parts":[[1975,10,1]],"date-time":"1975-10-01T00:00:00Z","timestamp":181353600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["British Journal of Orthodontics"],"published-print":{"date-parts":[[1975,10]]},"abstract":"<jats:p> In the interest of further clarification of the interaction of the multiple causative factors of upper incisor retroclination, the development of Class II Division 2 occlusion is contrasted to that of Class I. The patients whose records were used had not received orthodontic treatment. <\/jats:p><jats:p> It was found that upper incisor retroclination in Class II Division 2 occurred after their emergence into the oral cavity. The effect is attributed to the upper incisors being able to erupt well within the cover of the lower lip through a combination of circumstances related to the proportional balance of the patient's facial structures in the vertical dimension. <\/jats:p><jats:p> The lower lip would guide the upper incisors into retroclined positions, only if the latter were unobstructed by digit, tongue or other teeth of either arch. <\/jats:p><jats:p> This implied not only a critical balance in size and relationship of the facial structures in the vertical dimension but also equally critical balances in the antero-posterior and lateral dimensions, without which the lower lip factor alone would be ineffective. <\/jats:p>","DOI":"10.1179\/bjo.2.4.207","type":"journal-article","created":{"date-parts":[[2014,12,16]],"date-time":"2014-12-16T13:11:57Z","timestamp":1418735517000},"page":"207-216","source":"Crossref","is-referenced-by-count":10,"title":["The Retroclined Upper Incisor"],"prefix":"10.1177","volume":"2","author":[{"given":"G. G. T.","family":"Fletcher","sequence":"first","affiliation":[{"name":"Eastman Dental Hospital, Gray's Inn Road, London, WC1X 8LD"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[1975,10,1]]},"reference":[{"key":"bibr1-bjo.2.4.207","unstructured":"BallardC. F. (1948) Some bases for aetoliogy and diagnosis in orthodontics, Transactions of the British Society for the Study of Orthodontics, 27\u201338."},{"key":"bibr2-bjo.2.4.207","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9416(69)90036-0"},{"key":"bibr3-bjo.2.4.207","unstructured":"FletcherG. G. T. (1963) A cephalometric appraisal of the development of malocclusion, Part 1, Transactions of the British Society for the Study of Orthodontics, 124\u2013130."},{"key":"bibr4-bjo.2.4.207","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9416(54)90145-1"},{"key":"bibr5-bjo.2.4.207","unstructured":"NicolW. A. (1954) The morphology of the lips in relation to the incisor teeth, Transactions of the British Society for the Study of Orthodontics, 25\u201328."}],"container-title":["British Journal of Orthodontics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1179\/bjo.2.4.207","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1179\/bjo.2.4.207","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,3,11]],"date-time":"2025-03-11T01:08:04Z","timestamp":1741655284000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1179\/bjo.2.4.207"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1975,10]]},"references-count":5,"journal-issue":{"issue":"4","published-print":{"date-parts":[[1975,10]]}},"alternative-id":["10.1179\/bjo.2.4.207"],"URL":"https:\/\/doi.org\/10.1179\/bjo.2.4.207","relation":{},"ISSN":["0301-228X"],"issn-type":[{"type":"print","value":"0301-228X"}],"subject":[],"published":{"date-parts":[[1975,10]]}}}