{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,19]],"date-time":"2026-02-19T16:33:26Z","timestamp":1771518806355,"version":"3.50.1"},"reference-count":34,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2019,6,12]],"date-time":"2019-06-12T00:00:00Z","timestamp":1560297600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/www.springer.com\/tdm"},{"start":{"date-parts":[[2019,6,12]],"date-time":"2019-06-12T00:00:00Z","timestamp":1560297600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/www.springer.com\/tdm"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Eur Arch Paediatr Dent"],"published-print":{"date-parts":[[2020,2]]},"DOI":"10.1007\/s40368-019-00459-z","type":"journal-article","created":{"date-parts":[[2019,6,12]],"date-time":"2019-06-12T13:05:11Z","timestamp":1560344711000},"page":"119-127","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":18,"title":["Ectopic eruption of the second premolar: an analysis of four different treatment approaches"],"prefix":"10.1007","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0407-3720","authenticated-orcid":false,"given":"M. Q.","family":"Ismail","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"E.","family":"Lauridsen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J. O.","family":"Andreasen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"N. V.","family":"Hermann","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2019,6,12]]},"reference":[{"key":"459_CR1","volume-title":"Atlas of replantation and transplantation of teeth","author":"JO Andreasen","year":"1992","unstructured":"Andreasen JO. Atlas of replantation and transplantation of teeth. Fribourg: Mediglobe; 1992."},{"key":"459_CR2","volume-title":"Textbook and color atlas of tooth impactions: diagnosis, treatment, prevention","author":"JO Andreasen","year":"1997","unstructured":"Andreasen JO, K\u00f8lsen Petersen J, Laskin DM. Textbook and color atlas of tooth impactions: diagnosis, treatment, prevention. Copenhagen: Munksgaard; 1997."},{"key":"459_CR3","doi-asserted-by":"publisher","first-page":"3","DOI":"10.1093\/ejo\/12.1.3","volume":"12","author":"JO Andreasen","year":"1990","unstructured":"Andreasen JO, Paulsen HU, Yu Z, et al. A long-term study of 370 autotransplanted premolars. Part I. Surgical procedures and standardized techniques for monitoring healing. Eur J Orthod. 1990a;12:3\u201313.","journal-title":"Eur J Orthod"},{"key":"459_CR4","doi-asserted-by":"publisher","first-page":"38","DOI":"10.1093\/ejo\/12.1.38","volume":"12","author":"JO Andreasen","year":"1990","unstructured":"Andreasen JO, Paulsen HU, Yu Z, et al. A long-term study of 370 autotransplanted premolars. Part IV. Root development subsequent to transplantation. Eur J Orthod. 1990b;12:38\u201350.","journal-title":"Eur J Orthod"},{"key":"459_CR5","doi-asserted-by":"publisher","first-page":"14","DOI":"10.1093\/ejo\/12.1.14","volume":"12","author":"JO Andreasen","year":"1990","unstructured":"Andreasen JO, Paulsen HU, Yu Z, et al. A long-term study of 370 autotransplanted premolars. Part II. Tooth survival and pulp healing subsequent to transplantation. Eur J Orthod. 1990c;12:14\u201324.","journal-title":"Eur J Orthod"},{"key":"459_CR6","doi-asserted-by":"publisher","first-page":"25","DOI":"10.1093\/ejo\/12.1.25","volume":"12","author":"JO Andreasen","year":"1990","unstructured":"Andreasen JO, Paulsen HU, Yu Z, et al. A long-term study of 370 autotransplanted premolars. Part III. Periodontal healing subsequent to transplantation. Eur J Orthod. 1990d;12:25\u201337.","journal-title":"Eur J Orthod"},{"key":"459_CR7","first-page":"121","volume":"38","author":"B Azaz","year":"1980","unstructured":"Azaz B, Steiman Z, Koyoumdjisky-Kaye E, et al. The sequelae of surgical exposure of unerupted teeth. J Am Dent Assoc. 1980;38:121\u20137.","journal-title":"J Am Dent Assoc"},{"key":"459_CR8","doi-asserted-by":"publisher","DOI":"10.1002\/9781118709641","volume-title":"Orthodontic treatment of impacted teeth","author":"A Becker","year":"2012","unstructured":"Becker A. Orthodontic treatment of impacted teeth. 3rd ed. Chichester: Wiley; 2012.","edition":"3"},{"key":"459_CR9","first-page":"89","volume":"16","author":"J Burch","year":"1994","unstructured":"Burch J, Ngan P, Hackman A. Diagnosis and treatment planning for unerupted premolars. Pediatr Dent. 1994;16:89\u201395.","journal-title":"Pediatr Dent"},{"key":"459_CR10","doi-asserted-by":"publisher","first-page":"189","DOI":"10.1111\/j.1600-0714.1980.tb00377.x","volume":"9","author":"DR Cahill","year":"1980","unstructured":"Cahill DR, Marks SC Jr. Tooth eruption: evidence for the central role of the dental follicle. J Oral Pathol. 1980;9:189\u2013200.","journal-title":"J Oral Pathol"},{"key":"459_CR11","doi-asserted-by":"crossref","first-page":"167","DOI":"10.21726\/rsbo.v10i2.915","volume":"10","author":"DCA Ferreira","year":"2013","unstructured":"Ferreira DCA, Fumes AC, Consolaro A, et al. Gubernacular cord and canal: does these anatomical structures play a role in dental eruption? RSBO. 2013;10:167\u201371.","journal-title":"RSBO"},{"key":"459_CR12","doi-asserted-by":"publisher","first-page":"623","DOI":"10.14219\/jada.archive.2000.0236","volume":"131","author":"CA Frank","year":"2000","unstructured":"Frank CA. Treatment options for impacted teeth. J Am Dent Assoc. 2000;131:623\u201332.","journal-title":"J Am Dent Assoc"},{"key":"459_CR13","first-page":"33","volume":"12","author":"JR Hu","year":"1992","unstructured":"Hu JR, Nakasima A, Takahama Y. Familial similarity in dental arch form and tooth position. J Craniofac Genet Dev Biol. 1992;12:33\u201340.","journal-title":"J Craniofac Genet Dev Biol"},{"key":"459_CR14","doi-asserted-by":"publisher","first-page":"341905","DOI":"10.1155\/2014\/341905","volume":"2014","author":"I Kjaer","year":"2014","unstructured":"Kjaer I. Mechanism of human tooth eruption: review article including a new theory for future studies on the eruption process. Scientifica. 2014;2014:341905.","journal-title":"Scientifica"},{"key":"459_CR15","doi-asserted-by":"publisher","first-page":"374","DOI":"10.1002\/(SICI)1097-0185(199606)245:2<374::AID-AR18>3.0.CO;2-M","volume":"245","author":"SC Marks Jr","year":"1996","unstructured":"Marks SC Jr, Schroeder HE. Tooth eruption: theories and facts. Anat Record. 1996;245:374\u201393.","journal-title":"Anat Record"},{"key":"459_CR16","doi-asserted-by":"publisher","first-page":"1490","DOI":"10.1177\/00220345630420062701","volume":"42","author":"CF Moorrees","year":"1963","unstructured":"Moorrees CF, Fanning EA, Hunt EE Jr. Age variation of formation stages for ten permanent teeth. J Dent Res. 1963;42:1490\u2013502.","journal-title":"J Dent Res"},{"key":"459_CR17","doi-asserted-by":"publisher","first-page":"195","DOI":"10.1093\/ortho\/26.3.195","volume":"26","author":"PA Mossey","year":"1999","unstructured":"Mossey PA. The heritability of malocclusion: part 2. The influence of genetics in malocclusion. Br J Orthod. 1999;26:195\u2013203.","journal-title":"Br J Orthod"},{"key":"459_CR18","doi-asserted-by":"publisher","first-page":"82","DOI":"10.1111\/j.1601-6343.2007.00416.x","volume":"11","author":"EA Mugonzibwa","year":"2008","unstructured":"Mugonzibwa EA, Eskeli R, Laine-Alava MT, et al. Spacing and crowding among African and Caucasian children. Orthod Craniofac Res. 2008;11:82\u20139.","journal-title":"Orthod Craniofac Res"},{"key":"459_CR19","volume-title":"Cate\u2019s oral histology: development, structure, and function","author":"A Ten Nanci","year":"2017","unstructured":"Ten Nanci A. Cate\u2019s oral histology: development, structure, and function. 9th ed. St. Louis: Elsevier; 2017.","edition":"9"},{"key":"459_CR20","doi-asserted-by":"publisher","first-page":"177","DOI":"10.3109\/00016356809026131","volume":"26","author":"A Nordenram","year":"1968","unstructured":"Nordenram A, Stromberg C. Positional relationships of the retained premolar. A clinical-radiological study of an oral surgical case material. Acta Odontol Scand. 1968;26:177\u201383.","journal-title":"Acta Odontol Scand"},{"key":"459_CR21","doi-asserted-by":"publisher","first-page":"383","DOI":"10.1016\/0030-4220(80)90279-0","volume":"49","author":"I \u00d6hman","year":"1980","unstructured":"\u00d6hman I, \u00d6hman A. The eruption tendency and changes of direction of impacted teeth following surgical exposure. Oral Surg Oral Med Oral Pathol. 1980;49:383\u20139.","journal-title":"Oral Surg Oral Med Oral Pathol"},{"key":"459_CR22","first-page":"361","volume":"54","author":"L Omnell","year":"1987","unstructured":"Omnell L, Sipher D. Root resorption in association with ectopic eruption: report of case. ASDC J Dent Child. 1987;54:361\u20132.","journal-title":"ASDC J Dent Child"},{"key":"459_CR23","doi-asserted-by":"publisher","first-page":"1256","DOI":"10.1136\/bmj.332.7552.1256","volume":"332","author":"SJ Pocock","year":"2006","unstructured":"Pocock SJ. The simplest statistical test: how to check for a difference between treatments. Br Med J. 2006;332:1256\u20138.","journal-title":"Br Med J"},{"key":"459_CR24","doi-asserted-by":"publisher","first-page":"159","DOI":"10.1111\/j.1600-0714.1991.tb00913.x","volume":"20","author":"GM Raghoebar","year":"1991","unstructured":"Raghoebar GM, Boering G, Vissink A, et al. Eruption disturbances of permanent molars: a review. J Oral Pathol Med. 1991;20:159\u201366.","journal-title":"J Oral Pathol Med"},{"key":"459_CR25","first-page":"262","volume":"44","author":"RM Shah","year":"1978","unstructured":"Shah RM, Boyd MA, Vakil TF. Studies of permanent tooth anomalies in 7886 Canadian individuals. I: impacted teeth. Dent J. 1978;44:262\u20134.","journal-title":"Dent J"},{"key":"459_CR26","doi-asserted-by":"publisher","first-page":"200","DOI":"10.1111\/j.1600-0528.1978.tb01150.x","volume":"6","author":"A Shifman","year":"1978","unstructured":"Shifman A, Chanannel I. Prevalence of taurodontism found in radiographic dental examination of 1200 young adult Israeli patients. Commun Dent Oral Epidemiol. 1978;6:200\u20133.","journal-title":"Commun Dent Oral Epidemiol"},{"key":"459_CR27","doi-asserted-by":"publisher","first-page":"642","DOI":"10.1016\/0030-4220(90)90250-V","volume":"69","author":"ND Spyropoulos","year":"1990","unstructured":"Spyropoulos ND. Orientation and eruptive patterns of the mandibular second premolar. Oral Surg Oral Med Oral Pathol. 1990;69:642\u20136.","journal-title":"Oral Surg Oral Med Oral Pathol"},{"key":"459_CR28","doi-asserted-by":"publisher","first-page":"6","DOI":"10.1007\/s00056-010-0908-9","volume":"71","author":"A Stellzig-Eisenhauer","year":"2010","unstructured":"Stellzig-Eisenhauer A, Decker E, Meyer-Marcotty P, et al. Primary Failure of Eruption (PFE)\u2014Clinical and Molecular Genetics Analysis. J Orofac Orthop Fortschritte Kieferorthop\u00e4die. 2010;71:6\u201316.","journal-title":"J Orofac Orthop Fortschritte Kieferorthop\u00e4die"},{"key":"459_CR29","first-page":"157","volume":"41","author":"RM Stemm","year":"1971","unstructured":"Stemm RM. The frequency of malposed unerupted lower premolar teeth. Angle Orthodon. 1971;41:157\u20138.","journal-title":"Angle Orthodon"},{"key":"459_CR30","first-page":"12","volume":"81","author":"B Thilander","year":"1973","unstructured":"Thilander B, Myrberg N. The prevalence of malocclusion in Swedish schoolchildren. Scand J Dent Res. 1973;81:12\u201321.","journal-title":"Scand J Dent Res"},{"key":"459_CR31","first-page":"519","volume":"66","author":"H Thilander","year":"1973","unstructured":"Thilander H, Thilander B, Persson G. Treatment of impacted teeth by surgical exposure. A survey study. Swed Dent J. 1973;66:519\u201325.","journal-title":"Swed Dent J"},{"key":"459_CR32","doi-asserted-by":"publisher","first-page":"97","DOI":"10.1179\/bjo.12.2.97","volume":"12","author":"C Tracey","year":"1985","unstructured":"Tracey C, Lee RT. Root resorption: the aggressive, unerupted second premolar. Br J Orthod. 1985;12:97\u2013101.","journal-title":"Br J Orthod"},{"key":"459_CR33","first-page":"332","volume":"74","author":"A Wasserstein","year":"2004","unstructured":"Wasserstein A, Brezniak N, Shalish M, et al. Angular changes and their rates in concurrence to developmental stages of the mandibular second premolar. Angle Orthod. 2004;74:332\u20136.","journal-title":"Angle Orthod"},{"key":"459_CR34","doi-asserted-by":"publisher","first-page":"67","DOI":"10.1111\/j.1601-6343.2009.01439.x","volume":"12","author":"GE Wise","year":"2009","unstructured":"Wise GE. Cellular and molecular basis of tooth eruption. Orthod Craniofac Res. 2009;12:67\u201373.","journal-title":"Orthod Craniofac Res"}],"container-title":["European Archives of Paediatric Dentistry"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/link.springer.com\/content\/pdf\/10.1007\/s40368-019-00459-z.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/link.springer.com\/article\/10.1007\/s40368-019-00459-z\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/link.springer.com\/content\/pdf\/10.1007\/s40368-019-00459-z.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2022,9,20]],"date-time":"2022-09-20T14:34:56Z","timestamp":1663684496000},"score":1,"resource":{"primary":{"URL":"http:\/\/link.springer.com\/10.1007\/s40368-019-00459-z"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,6,12]]},"references-count":34,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2020,2]]}},"alternative-id":["459"],"URL":"https:\/\/doi.org\/10.1007\/s40368-019-00459-z","relation":{},"ISSN":["1818-6300","1996-9805"],"issn-type":[{"value":"1818-6300","type":"print"},{"value":"1996-9805","type":"electronic"}],"subject":[],"published":{"date-parts":[[2019,6,12]]},"assertion":[{"value":"24 January 2019","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"4 June 2019","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"12 June 2019","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Compliance with ethical standards"}},{"value":"The authors have no disclosures.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and\/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Research involving human participants and\/or animals"}},{"value":"Informed consent was obtained from all individual participants included in the study.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Informed consent"}}]}}