{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,12]],"date-time":"2026-10-12T20:45:51Z","timestamp":1791837951460,"version":"4.3.4"},"reference-count":31,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2018,8,30]],"date-time":"2018-08-30T00:00:00Z","timestamp":1535587200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["aap.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Periodontology"],"published-print":{"date-parts":[[2019,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Labially impacted maxillary canines may lack periodontal tissue after orthodontic traction. This study evaluated the periodontal status of labially impacted maxillary canines after the closed eruption technique followed by orthodontic traction and investigated pretreatment variables affecting periodontal changes.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Patients with one labially impacted maxillary canine (impaction group) and one contralateral normal canine (control group) were selected retrospectively. Maxillary canine pretreatment variables (angle, depth, sector, and Nolla stage) were determined from initial panoramic radiography. Periodontal outcomes including sulcus probing depth, bone probing depth, keratinized gingiva width (KGW), attached gingiva width (AGW), clinical crown length (CCL), cemento\u2010enamel junction to alveolar crest (CEJ\u2010AC) distance, root length, and bone support were measured from radiographic and clinical examinations after treatment and compared between the two groups. Pretreatment variables affecting the periodontal outcomes were determined using linear regression analyses.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Fifty\u2010four patients (21 males and 33 females; mean age, 12.85 years) were enrolled. The KGW, AGW, and root length were shorter; the CCL and CEJ\u2010AC distance were longer; and the bone support on the interproximal sides was less in the impaction group than in the control group (<jats:italic>P<\/jats:italic>\u00a0&lt;\u00a00.05). The root length was shorter with higher Nolla stages and the distal alveolar crest was lower with deep and mesially angulated impaction (<jats:italic>P<\/jats:italic>\u00a0&lt;\u00a00.01).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>After the closed eruption technique, impacted canines exhibited slight but clinically insignificant periodontal recession compared with the contralateral normal tooth. The root developmental stage and pretreatment depth and angle may influence periodontal recession.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jper.18-0034","type":"journal-article","created":{"date-parts":[[2018,7,12]],"date-time":"2018-07-12T12:04:15Z","timestamp":1531397055000},"page":"35-43","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":28,"title":["Labially impacted maxillary canines after the closed eruption technique and orthodontic traction: A split\u2010mouth comparison of periodontal recession"],"prefix":"10.1002","volume":"90","author":[{"given":"Ji Yeon","family":"Lee","sequence":"first","affiliation":[{"name":"Private practice"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yoon Jeong","family":"Choi","sequence":"additional","affiliation":[{"name":"Department of Orthodontics The Institute of Craniofacial Deformity Yonsei University College of Dentistry  Seoul Korea"},{"name":"Department of Mechanical engineering College of Engineering Yonsei University  Seoul Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Seong\u2010Ho","family":"Choi","sequence":"additional","affiliation":[{"name":"Department of Periodontology Research Institute for Periodontal Regeneration Yonsei University College of Dentistry"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chooryung J.","family":"Chung","sequence":"additional","affiliation":[{"name":"Department of Orthodontics Gangnam Severance Dental Hospital The Institute of Craniofacial Deformity Yonsei University College of Dentistry"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hyung\u2010Seog","family":"Yu","sequence":"additional","affiliation":[{"name":"Department of Orthodontics The Institute of Craniofacial Deformity Yonsei University College of Dentistry  Seoul Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kyung\u2010Ho","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Orthodontics Gangnam Severance Dental Hospital The Institute of Craniofacial Deformity Yonsei University College of Dentistry"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2018,8,30]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/0030-4220(85)90070-2"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9416(75)90235-3"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9416(77)90124-5"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1053\/j.sodo.2010.05.009"},{"key":"e_1_2_8_6_1","first-page":"293","article-title":"The role of dental compensations in the orthodontic treatment of mandibular prognathism","volume":"47","author":"Sperry TP","year":"1977","journal-title":"Angle Orthod"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.4041\/kjod.2017.47.5.323"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0011-8532(22)00276-2"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajodo.2004.06.009"},{"key":"e_1_2_8_10_1","first-page":"23","article-title":"Uncovering labially impacted teeth: apically positioned flap and closed\u2010eruption techniques","volume":"65","author":"Vermette ME","year":"1995","journal-title":"Angle Orthod"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0889-5406(94)70100-8"},{"key":"e_1_2_8_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajodo.2015.10.019"},{"key":"e_1_2_8_13_1","doi-asserted-by":"publisher","DOI":"10.2319\/080406-318.1"},{"key":"e_1_2_8_14_1","doi-asserted-by":"publisher","DOI":"10.3109\/00016356309011240"},{"key":"e_1_2_8_15_1","doi-asserted-by":"publisher","DOI":"10.1093\/ejo\/10.1.283"},{"key":"e_1_2_8_16_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-051X.2007.01094.x"},{"key":"e_1_2_8_17_1","doi-asserted-by":"publisher","DOI":"10.1902\/jop.1976.47.9.514"},{"key":"e_1_2_8_18_1","first-page":"257","article-title":"Periodontal conditions following surgical exposure of unerupted maxillary canines\u2013a long term follow\u2010up study of two surgical techniques","volume":"8","author":"Tegsjo U","year":"1984","journal-title":"Swed Dent J"},{"key":"e_1_2_8_19_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajodo.2013.03.016"},{"key":"e_1_2_8_20_1","doi-asserted-by":"publisher","DOI":"10.1902\/jop.1972.43.10.623"},{"key":"e_1_2_8_21_1","doi-asserted-by":"publisher","DOI":"10.1016\/0889-5406(92)70008-X"},{"key":"e_1_2_8_22_1","doi-asserted-by":"publisher","DOI":"10.1563\/AAID-JOI-D-09-00035.1"},{"key":"e_1_2_8_23_1","doi-asserted-by":"publisher","DOI":"10.1002\/JPER.17-0379"},{"key":"e_1_2_8_24_1","doi-asserted-by":"publisher","DOI":"10.1186\/s40729-015-0009-z"},{"key":"e_1_2_8_25_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-051X.1981.tb02041.x"},{"key":"e_1_2_8_26_1","doi-asserted-by":"publisher","DOI":"10.4103\/jdrr.jdrr_42_17"},{"key":"e_1_2_8_27_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0889-5406(97)70224-5"},{"key":"e_1_2_8_28_1","first-page":"167","article-title":"Periodontal conditions following surgical and orthodontic treatment of palatally impacted maxillary canines\u2013a follow\u2010up study","volume":"68","author":"Hansson C","year":"1998","journal-title":"Angle Orthod"},{"key":"e_1_2_8_29_1","doi-asserted-by":"publisher","DOI":"10.1590\/2176-9451.20.1.052-058.oar"},{"key":"e_1_2_8_30_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1834-7819.1996.tb03139.x"},{"key":"e_1_2_8_31_1","first-page":"127","article-title":"The effect of orthodontic treatment on the periodontium","volume":"44","author":"Kloehn JS","year":"1974","journal-title":"Angle Orthod"},{"key":"e_1_2_8_32_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajodo.2004.04.017"}],"container-title":["Journal of Periodontology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2FJPER.18-0034","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/aap.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/JPER.18-0034","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,19]],"date-time":"2025-10-19T12:15:45Z","timestamp":1760876145000},"score":1,"resource":{"primary":{"URL":"https:\/\/aap.onlinelibrary.wiley.com\/doi\/10.1002\/JPER.18-0034"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2018,8,30]]},"references-count":31,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2019,1]]}},"alternative-id":["10.1002\/JPER.18-0034"],"URL":"https:\/\/doi.org\/10.1002\/jper.18-0034","archive":["Portico"],"relation":{},"ISSN":["0022-3492","1943-3670"],"issn-type":[{"value":"0022-3492","type":"print"},{"value":"1943-3670","type":"electronic"}],"subject":[],"published":{"date-parts":[[2018,8,30]]},"assertion":[{"value":"2018-01-15","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2018-06-03","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2018-08-30","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}