{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,6]],"date-time":"2026-05-06T23:16:47Z","timestamp":1778109407717,"version":"3.51.4"},"reference-count":22,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2012,7,16]],"date-time":"2012-07-16T00:00:00Z","timestamp":1342396800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Dental Traumatology"],"published-print":{"date-parts":[[2012,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>The purpose of the study was to analyze the risk of periodontal ligament (<jats:styled-content style=\"fixed-case\">PDL<\/jats:styled-content>) healing complications following concussion and subluxation injuries in the permanent dentition.<\/jats:p><\/jats:sec><jats:sec><jats:title>Material and method<\/jats:title><jats:p>A total 469 permanent teeth (358 patients) with concussion and 404 permanent teeth with subluxation were included in the study. All teeth were examined according to a standardized protocol including clinical, photographic, and radiographic registration. Statistics: The risk of repair\u2010related resorption (surface resorption), infection\u2010related resorption (inflammatory resorption), replacement\u2010related resorption (ankylosis), marginal bone loss, and tooth loss were analyzed with the <jats:styled-content style=\"fixed-case\">K<\/jats:styled-content>aplan\u2013<jats:styled-content style=\"fixed-case\">M<\/jats:styled-content>eier method.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Concussion: In teeth with immature root development, no healing complications were observed. For teeth with mature root development, the risk of repair related resorption after 3\u00a0years was 3.2% (95% <jats:styled-content style=\"fixed-case\">CI<\/jats:styled-content>: 0.3\u20136.0%) and occurred only in cases where several teeth were injured simultaneously (multiple\u2010trauma cases). The risk of marginal bone loss in teeth with mature root development was 0.7% (95% <jats:styled-content style=\"fixed-case\">CI<\/jats:styled-content>: 0\u20131.6%). Infection\u2010related resorption, replacement resorption, and tooth loss were not observed among teeth with concussion. Subluxation: In teeth with immature root development, the risk of infection\u2010related resorption after 3\u00a0years was 1.7% [95% confidence interval (<jats:styled-content style=\"fixed-case\">CI<\/jats:styled-content>): 0\u20133.8%]. Infection\u2010related resorption occurred significantly more often in teeth with concomitant crown fracture (<jats:italic>P<\/jats:italic>\u00a0=\u00a00.004). For teeth with mature root development, the risk of periodontal healing complications after 3\u00a0years was: repair\u2010related resorption, 3.6% (95% <jats:styled-content style=\"fixed-case\">CI<\/jats:styled-content>: 0\u20137.6%); infection\u2010related resorption, 0.6% (95% <jats:styled-content style=\"fixed-case\">CI<\/jats:styled-content>: 0\u20131.7%); replacement\u2010related resorption, 0.6% (95% <jats:styled-content style=\"fixed-case\">CI<\/jats:styled-content>: 0\u20131.7%); and marginal bone loss, 0.6% (95% <jats:styled-content style=\"fixed-case\">CI<\/jats:styled-content>: 0\u20131.7%). No teeth were lost in the observation period.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The risk of periodontal healing complications after concussion as well as subluxation injuries in permanent teeth is very low.<\/jats:p><\/jats:sec>","DOI":"10.1111\/j.1600-9657.2012.01165.x","type":"journal-article","created":{"date-parts":[[2012,7,16]],"date-time":"2012-07-16T06:34:33Z","timestamp":1342420473000},"page":"386-393","source":"Crossref","is-referenced-by-count":27,"title":["Periodontal healing complications following concussion and subluxation injuries in the permanent dentition: a longitudinal cohort study"],"prefix":"10.1111","volume":"28","author":[{"given":"Nuno Vibe","family":"Hermann","sequence":"first","affiliation":[{"name":"Pediatric Dentistry and Clinical Genetics Faculty of Health Sciences School of Dentistry University of Copenhagen  Copenhagen Denmark"},{"name":"3D Craniofacial Image Research Laboratory School of Dentistry University of Copenhagen  Copenhagen Denmark"},{"name":"3D Craniofacial Image Research Laboratory Copenhagen University Hospital Rigshospitalet  Copenhagen Denmark"},{"name":"3D Craniofacial Image Research Laboratory DTU Informatics Technical University of Denmark  Copenhagen Denmark"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eva","family":"Lauridsen","sequence":"additional","affiliation":[{"name":"Pediatric Dentistry and Clinical Genetics Faculty of Health Sciences School of Dentistry University of Copenhagen  Copenhagen Denmark"},{"name":"Resource Centre for Rare Oral Diseases Copenhagen University Hospital Rigshospitalet  Copenhagen Denmark"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"S\u00f8ren Steno","family":"Ahrensburg","sequence":"additional","affiliation":[{"name":"Resource Centre for Rare Oral Diseases Copenhagen University Hospital Rigshospitalet  Copenhagen Denmark"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Thomas Alexander","family":"Gerds","sequence":"additional","affiliation":[{"name":"Department of Biostatistics Faculty of Health Sciences University of Copenhagen  Copenhagen Denmark"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jens Ove","family":"Andreasen","sequence":"additional","affiliation":[{"name":"Resource Centre for Rare Oral Diseases Copenhagen University Hospital Rigshospitalet  Copenhagen Denmark"},{"name":"Department of Oral and Maxillofacial Surgery Copenhagen University Hospital Rigshospitalet  Copenhagen Denmark"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2012,7,16]]},"reference":[{"key":"e_1_2_6_2_1","first-page":"141","volume-title":"Traumatic injuries of the teeth","author":"Andreasen JO","year":"1972"},{"key":"e_1_2_6_3_1","volume-title":"Traumatic dental injuries \u2013 a manual","author":"Andreasen JO","year":"2003"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-9657.1990.tb00406.x"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-9657.1991.tb00179.x"},{"key":"e_1_2_6_6_1","first-page":"157","article-title":"Traumatized permanent teeth in children aged 7\u201315\u00a0years. 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