{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,25]],"date-time":"2026-06-25T23:23:42Z","timestamp":1782429822081,"version":"3.54.5"},"reference-count":64,"publisher":"The Angle Orthodontist (EH Angle Education & Research Foundation)","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2017,7]]},"abstract":"ABSTRACT<\/jats:title>\n \n Objective:<\/jats:title>\n To examine whether there is a relationship between maxillary canine impaction and the morphologic characteristics of the maxillary dentition, especially the root of the lateral incisor.<\/jats:p>\n <\/jats:sec>\n \n Materials and Methods:<\/jats:title>\n In this study, we selected only patients with unilateral maxillary canine impaction to compare the morphologic characteristics of the dentition on the impaction side and the clinically normal eruption side. The sample size was decided to be 40 based on the pilot study. To minimize bias depending on sex and location of the maxillary canine impaction, we selected equal numbers (20) of boys and girls, and equal cases (20) of buccal impaction and palatal impaction. Under the aforementioned conditions, the mean age was 13.5 \u00b1 2.3 years. The multislice spiral computed tomography images of these 40 subjects were converted into three-dimensional (3D) reconstructed images using the OnDemand 3D program (Cybermed Co, Seoul, Korea). Then we measured the morphologic characteristics of the individual teeth on the obtained 3D teeth images.<\/jats:p>\n <\/jats:sec>\n \n Results:<\/jats:title>\n \n Length and volume of the maxillary lateral incisor's roots were significantly smaller on the impaction side compared with the normal eruption side (\n P<\/jats:italic>\n = 0.001 and\n P<\/jats:italic>\n = 0.006, respectively). The width and volume of the canine's crown were significantly greater on the impaction side compared with the normal eruption side (\n P<\/jats:italic>\n = 0.020 and\n P <<\/jats:italic>\n .0001, respectively).\n <\/jats:p>\n <\/jats:sec>\n \n Conclusion:<\/jats:title>\n These results might help to prove the hypothesis that the smaller-sized lateral incisor roots and greater-sized canine crowns are the influential etiologic factors in maxillary canine impaction.<\/jats:p>\n <\/jats:sec>","DOI":"10.2319\/071516-554.1","type":"journal-article","created":{"date-parts":[[2017,2,3]],"date-time":"2017-02-03T09:53:55Z","timestamp":1486115635000},"page":"590-597","source":"Crossref","is-referenced-by-count":29,"title":["Morphological relationship analysis of impacted maxillary canines and the adjacent teeth on 3-dimensional reconstructed CT images"],"prefix":"10.2319","volume":"87","author":[{"given":"Yoojun","family":"Kim","sequence":"first","affiliation":[{"name":"Graduate student, Department of Pediatric Dentistry & Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Korea."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hong-Keun","family":"Hyun","sequence":"additional","affiliation":[{"name":"Assistant Professor, Department of Pediatric Dentistry & Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Korea."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ki-Taeg","family":"Jang","sequence":"additional","affiliation":[{"name":"Professor, Department of Pediatric Dentistry & Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Korea."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1164","reference":[{"key":"i0003-3219-87-4-590-b01","series-title":"Textbook and Color Atlas of Tooth Impactions","first-page":"126","author":"Andreasen \n JO,","year":"1997","unstructured":"Andreasen \n JO, \n \n \n Petersen \n JK, \n \n \n Laskin \n DM. \n \n \n Textbook and Color Atlas of Tooth Impactions. Copenhagen, Denmark: Munksgaard;1997:126\u2013166."},{"key":"i0003-3219-87-4-590-b02","series-title":"The Orthodontic Treatment of Impacted Teeth. 2nd ed","first-page":"93","author":"Becker \n A.","year":"2007","unstructured":"Becker \n A. \n \n \n The Orthodontic Treatment of Impacted Teeth. 2nd ed. London: Informa Healthcare;2007:93\u2013174."},{"key":"i0003-3219-87-4-590-b03","series-title":"Korean J Orthod","first-page":"165","article-title":"Diagnosis and treatment plan of maxillary impacted canine","volume":"23","author":"Kung \n SH,","year":"1993","unstructured":"Kung \n SH, \n \n \n Hwang \n CJ. \n \n \n Diagnosis and treatment plan of maxillary impacted canine. Korean J Orthod. 1993;23:165\u2013177."},{"key":"i0003-3219-87-4-590-b04","series-title":"Scand J Dent Res","first-page":"12","article-title":"The prevalence of malocclusion in Swedish school children","volume":"81","author":"Thilander \n B,","year":"1973","unstructured":"Thilander \n B, \n \n \n Myrberg \n N. \n \n \n The prevalence of malocclusion in Swedish school children. Scand J Dent Res. 1973;81:12\u201321."},{"key":"i0003-3219-87-4-590-b05","series-title":"Eur J Orthod","first-page":"133","article-title":"Radiographic assessment of maxillary canine eruption in children with clinical signs of eruption disturbances","volume":"8","author":"Ericson \n S,","year":"1986","unstructured":"Ericson \n S, \n \n \n Kurol \n J. \n \n \n Radiographic assessment of maxillary canine eruption in children with clinical signs of eruption disturbances. Eur J Orthod. 1986;8:133\u2013140."},{"key":"i0003-3219-87-4-590-b06","series-title":"J Oral Maxillofac Surg","first-page":"1001","article-title":"Investigation of transmigrated and impacted maxillary and mandibular canine teeth in an orthodontic patient population","volume":"68","author":"Celikoglu \n M,","year":"2010","unstructured":"Celikoglu \n M, \n \n \n Kamak \n H, \n \n \n Oktay \n H. \n \n \n Investigation of transmigrated and impacted maxillary and mandibular canine teeth in an orthodontic patient population. J Oral Maxillofac Surg. 2010;68:1001\u20131006."},{"key":"i0003-3219-87-4-590-b07","series-title":"J Oral Maxillofac Surg","first-page":"762","article-title":"et al.. Investigation of impacted permanent teeth except the third molar in Chinese patients through an x-ray study","volume":"68","author":"Hou \n R,","year":"2010","unstructured":"Hou \n R, \n \n \n Kong \n L, \n \n \n Ao \n J, \n \n \n et al.. Investigation of impacted permanent teeth except the third molar in Chinese patients through an x-ray study. J Oral Maxillofac Surg. 2010;68:762\u2013767."},{"key":"i0003-3219-87-4-590-b08","series-title":"Oral Surg Oral Med Oral Pathol","first-page":"916","article-title":"A survey of 3,874 routine full mouth radiographs","volume":"14","author":"Dachi \n SF,","year":"1961","unstructured":"Dachi \n SF, \n \n \n Howell \n FV. \n \n \n A survey of 3,874 routine full mouth radiographs. Oral Surg Oral Med Oral Pathol. 1961;14:916\u2013924."},{"key":"i0003-3219-87-4-590-b09","series-title":"Angle Orthod","first-page":"24","article-title":"The incidence of anomalous maxillary lateral incisors in relation to palatally-displaced cuspids","volume":"51","author":"Becker \n A,","year":"1981","unstructured":"Becker \n A, \n \n \n Smith \n P, \n \n \n Behar \n R. \n \n \n The incidence of anomalous maxillary lateral incisors in relation to palatally-displaced cuspids. Angle Orthod. 1981;51:24\u201329."},{"key":"i0003-3219-87-4-590-b10","series-title":"Br J Orthod","first-page":"9","article-title":"Morphology of the maxillary lateral incisor in cases of unilateral impaction of the maxillary canine","volume":"16","author":"Oliver \n RG,","year":"1989","unstructured":"Oliver \n RG, \n \n \n Mannion \n JE, \n \n \n Robinson \n JM. \n \n \n Morphology of the maxillary lateral incisor in cases of unilateral impaction of the maxillary canine. Br J Orthod. 1989;16:9\u201316."},{"key":"i0003-3219-87-4-590-b11","series-title":"Angle Orthod","first-page":"249","article-title":"The palatally displaced canine as a dental anomaly of genetic origin","volume":"64","author":"Peck \n S,","year":"1994","unstructured":"Peck \n S, \n \n \n Peck \n L, \n \n \n Kataja \n M. \n \n \n The palatally displaced canine as a dental anomaly of genetic origin. Angle Orthod. 1994;64:249\u2013256."},{"key":"i0003-3219-87-4-590-b12","series-title":"Am J Orthod","first-page":"236","article-title":"Orthodontic considerations in the treatment of maxillary impacted canines","volume":"81","author":"Fournier \n A,","year":"1982","unstructured":"Fournier \n A, \n \n \n Turcotte \n J, \n \n \n Bernard \n C. \n \n \n Orthodontic considerations in the treatment of maxillary impacted canines. Am J Orthod. 1982;81:236\u2013239."},{"key":"i0003-3219-87-4-590-b13","series-title":"Am J Orthod","first-page":"125","article-title":"The etiology of maxillary canine impaction","volume":"84","author":"Jacoby \n H.","year":"1983","unstructured":"Jacoby \n H. \n \n \n The etiology of maxillary canine impaction. Am J Orthod. 1983;84:125\u2013132."},{"key":"i0003-3219-87-4-590-b14","series-title":"Fortschr Kieferorthop","first-page":"97","article-title":"The etiology of canine tooth impaction: a space analysis","volume":"55","author":"Stellzig \n A,","year":"1994","unstructured":"Stellzig \n A, \n \n \n Basdra \n EK, \n \n \n Koumrposch \n G. \n \n \n The etiology of canine tooth impaction: a space analysis. Fortschr Kieferorthop. 1994;55:97\u2013103."},{"key":"i0003-3219-87-4-590-b15","series-title":"Zhonghua Kou Qiang Yi Xue Za Zhi","first-page":"483","article-title":"Clinical investigation of impacted maxillary canine","volume":"41","author":"Zhong \n YL,","year":"2006","unstructured":"Zhong \n YL, \n \n \n Zeng \n XL, \n \n \n Jia \n QL, \n \n et al. \n Clinical investigation of impacted maxillary canine. Zhonghua Kou Qiang Yi Xue Za Zhi. 2006;41:483\u2013485."},{"key":"i0003-3219-87-4-590-b16","series-title":"Eur J Orthod","first-page":"302","article-title":"The position of maxillary canine impactions and the influenced factors to adjacent root resorption in the Korean population","volume":"34","author":"Kim \n Y,","year":"2012","unstructured":"Kim \n Y, \n \n \n Hyun \n HK, \n \n \n Jang \n KT. \n \n \n The position of maxillary canine impactions and the influenced factors to adjacent root resorption in the Korean population. Eur J Orthod. 2012;34:302\u2013306."},{"key":"i0003-3219-87-4-590-b17","series-title":"Eur J Orthod","first-page":"135","article-title":"Familial trends in palatal canines, anomalous lateral incisors and related phenomena","volume":"12","author":"Zilberman \n Y,","year":"1990","unstructured":"Zilberman \n Y, \n \n \n Cohen \n B, \n \n \n Becker \n A. \n \n \n Familial trends in palatal canines, anomalous lateral incisors and related phenomena. Eur J Orthod. 1990;12:135\u2013139."},{"key":"i0003-3219-87-4-590-b18","series-title":"Am J Orthod Dentofacial Orthop","first-page":"441","article-title":"Prevalence of tooth agenesis and peg-shaped maxillary lateral incisor associated with palatally displaced canine anomaly","volume":"110","author":"Peck \n S,","year":"1996","unstructured":"Peck \n S, \n \n \n Peck \n L, \n \n \n Kataja \n M. \n \n \n Prevalence of tooth agenesis and peg-shaped maxillary lateral incisor associated with palatally displaced canine anomaly. Am J Orthod Dentofacial Orthop. 1996;110:441\u2013443."},{"key":"i0003-3219-87-4-590-b19","series-title":"Am J Orthod","first-page":"437","article-title":"Etiology of maxillary canine impactions","volume":"86","author":"Becker \n A.","year":"1984","unstructured":"Becker \n A. \n \n \n Etiology of maxillary canine impactions. Am J Orthod. 1984;86:437\u2013438."},{"key":"i0003-3219-87-4-590-b20","series-title":"Eur J Orthod","first-page":"12","article-title":"Position of the maxillary permanent canine in relation to anomalous or missing lateral incisors: a population study","volume":"8","author":"Brin \n I,","year":"1986","unstructured":"Brin \n I, \n \n \n Becker \n A, \n \n \n Shalhav \n M. \n \n \n Position of the maxillary permanent canine in relation to anomalous or missing lateral incisors: a population study. Eur J Orthod. 1986;8:12\u201316."},{"key":"i0003-3219-87-4-590-b21","series-title":"Br J Orthod","first-page":"169","article-title":"The palatal canine and the adjacent lateral incisor: a study of a west of Scotland population","volume":"21","author":"Mossey \n PA,","year":"1994","unstructured":"Mossey \n PA, \n \n \n Campbell \n HM, \n \n \n Luffingham \n JK. \n \n \n The palatal canine and the adjacent lateral incisor: a study of a west of Scotland population. Br J Orthod. 1994;21:169\u2013174."},{"key":"i0003-3219-87-4-590-b22","series-title":"Angle Orthod","first-page":"267","article-title":"A controlled study of associated dental anomalies","volume":"68","author":"Baccetti \n T.","year":"1998","unstructured":"Baccetti \n T. \n \n \n A controlled study of associated dental anomalies. Angle Orthod. 1998;68:267\u2013274."},{"key":"i0003-3219-87-4-590-b23","series-title":"Eur J Orthod","first-page":"485","article-title":"Tooth size in dentitions with buccal canine ectopia","volume":"25","author":"Chaushu \n S,","year":"2003","unstructured":"Chaushu \n S, \n \n \n Sharabi \n S, \n \n \n Becker \n A. \n \n \n Tooth size in dentitions with buccal canine ectopia. Eur J Orthod. 2003;25:485\u2013491."},{"key":"i0003-3219-87-4-590-b24","series-title":"Angle Orthod","first-page":"126","article-title":"Tooth-size reduction associated with occurrence of palatal displacement of canines","volume":"70","author":"Langberg \n BJ,","year":"2000","unstructured":"Langberg \n BJ, \n \n \n Peck \n S. \n \n \n Tooth-size reduction associated with occurrence of palatal displacement of canines. Angle Orthod. 2000;70:126\u2013128."},{"key":"i0003-3219-87-4-590-b25","series-title":"Eur J Orthod","first-page":"313","article-title":"Maxillary tooth size variation in dentitions with palatal canine displacement","volume":"24","author":"Becker \n A,","year":"2002","unstructured":"Becker \n A, \n \n \n Sharabi \n S, \n \n \n Chaushu \n S. \n \n \n Maxillary tooth size variation in dentitions with palatal canine displacement. Eur J Orthod. 2002;24:313\u2013318."},{"key":"i0003-3219-87-4-590-b26","series-title":"Clin Oral Investig","first-page":"247","article-title":"Root resorption of the maxillary lateral incisor caused by impacted canine: a literature review","volume":"13","author":"Alqerban \n A,","year":"2009","unstructured":"Alqerban \n A, \n \n \n Jacobs \n R, \n \n \n Lambrechts \n P, \n \n et al. \n Root resorption of the maxillary lateral incisor caused by impacted canine: a literature review. Clin Oral Investig. 2009;13:247\u2013255."},{"key":"i0003-3219-87-4-590-b27","series-title":"Eur J Orthod","first-page":"369","article-title":"Ectopic eruption of maxillary first permanent molars and association with other tooth and development disturbances","volume":"14","author":"Bjerklin \n K,","year":"1992","unstructured":"Bjerklin \n K, \n \n \n Kurol \n J, \n \n \n Valentin \n J. \n \n \n Ectopic eruption of maxillary first permanent molars and association with other tooth and development disturbances. Eur J Orthod. 1992;14:369\u2013375."},{"key":"i0003-3219-87-4-590-b28","series-title":"J Am Dent Assoc","first-page":"1485","article-title":"A review of the diagnosis and management of impacted maxillary canines","volume":"140","author":"Bedoya \n MM,","year":"2009","unstructured":"Bedoya \n MM, \n \n \n Park \n JH. \n \n \n A review of the diagnosis and management of impacted maxillary canines. J Am Dent Assoc. 2009;140:1485\u20131493."},{"key":"i0003-3219-87-4-590-b29","series-title":"J Orofac Orthop","first-page":"33","article-title":"Measuring mesiodistal width of impacted maxillary canines with CT","volume":"72","author":"Hoffmann \n E,","year":"2011","unstructured":"Hoffmann \n E, \n \n \n Medelnik \n J, \n \n \n Keller \n T, \n \n et al. \n Measuring mesiodistal width of impacted maxillary canines with CT. J Orofac Orthop. 2011;72:33\u201344."},{"key":"i0003-3219-87-4-590-b30","series-title":"J Craniomaxillofac Surg","first-page":"1","article-title":"3D CT based rating of unilateral impacted canines","volume":"40","author":"Hanke \n S,","year":"2012","unstructured":"Hanke \n S, \n \n \n Hirschfelder \n U, \n \n \n Keller \n T, \n \n \n Hofmann \n E. \n \n \n 3D CT based rating of unilateral impacted canines. J Craniomaxillofac Surg. 2012;40:1\u20139."},{"key":"i0003-3219-87-4-590-b31","series-title":"Am J Orthod Dentofacial Orthop","first-page":"418","article-title":"Three-dimensional localization of maxillary canines with cone-beam computed tomography","volume":"128","author":"Walker \n L,","year":"2005","unstructured":"Walker \n L, \n \n \n Enciso \n R, \n \n \n Mah \n J. \n \n \n Three-dimensional localization of maxillary canines with cone-beam computed tomography. Am J Orthod Dentofacial Orthop. 2005;128:418\u2013423."},{"key":"i0003-3219-87-4-590-b32","series-title":"Oral Surg Oral Med Oral Pathol Oral Radiol","first-page":"260","article-title":"Three-dimensional assessment of impacted canines and root resorption using cone beam computed tomography","volume":"113","author":"Oberoi \n S,","year":"2012","unstructured":"Oberoi \n S, \n \n \n Knueppel \n S, \n \n \n Francisso \n S. \n \n \n Three-dimensional assessment of impacted canines and root resorption using cone beam computed tomography. Oral Surg Oral Med Oral Pathol Oral Radiol. 2012;113:260\u2013262."},{"key":"i0003-3219-87-4-590-b01","series-title":"Textbook and Color Atlas of Tooth Impactions","first-page":"126","author":"Andreasen \n JO,","year":"1997","unstructured":"Andreasen \n JO, \n \n \n Petersen \n JK, \n \n \n Laskin \n DM. \n \n \n Textbook and Color Atlas of Tooth Impactions. Copenhagen, Denmark: Munksgaard;1997:126\u2013166."},{"key":"i0003-3219-87-4-590-b02","series-title":"The Orthodontic Treatment of Impacted Teeth. 2nd ed","first-page":"93","author":"Becker \n A.","year":"2007","unstructured":"Becker \n A. \n \n \n The Orthodontic Treatment of Impacted Teeth. 2nd ed. London: Informa Healthcare;2007:93\u2013174."},{"key":"i0003-3219-87-4-590-b03","series-title":"Korean J Orthod","first-page":"165","article-title":"Diagnosis and treatment plan of maxillary impacted canine","volume":"23","author":"Kung \n SH,","year":"1993","unstructured":"Kung \n SH, \n \n \n Hwang \n CJ. \n \n \n Diagnosis and treatment plan of maxillary impacted canine. Korean J Orthod. 1993;23:165\u2013177."},{"key":"i0003-3219-87-4-590-b04","series-title":"Scand J Dent Res","first-page":"12","article-title":"The prevalence of malocclusion in Swedish school children","volume":"81","author":"Thilander \n B,","year":"1973","unstructured":"Thilander \n B, \n \n \n Myrberg \n N. \n \n \n The prevalence of malocclusion in Swedish school children. Scand J Dent Res. 1973;81:12\u201321."},{"key":"i0003-3219-87-4-590-b05","series-title":"Eur J Orthod","first-page":"133","article-title":"Radiographic assessment of maxillary canine eruption in children with clinical signs of eruption disturbances","volume":"8","author":"Ericson \n S,","year":"1986","unstructured":"Ericson \n S, \n \n \n Kurol \n J. \n \n \n Radiographic assessment of maxillary canine eruption in children with clinical signs of eruption disturbances. Eur J Orthod. 1986;8:133\u2013140."},{"key":"i0003-3219-87-4-590-b06","series-title":"J Oral Maxillofac Surg","first-page":"1001","article-title":"Investigation of transmigrated and impacted maxillary and mandibular canine teeth in an orthodontic patient population","volume":"68","author":"Celikoglu \n M,","year":"2010","unstructured":"Celikoglu \n M, \n \n \n Kamak \n H, \n \n \n Oktay \n H. \n \n \n Investigation of transmigrated and impacted maxillary and mandibular canine teeth in an orthodontic patient population. J Oral Maxillofac Surg. 2010;68:1001\u20131006."},{"key":"i0003-3219-87-4-590-b07","series-title":"J Oral Maxillofac Surg","first-page":"762","article-title":"et al.. Investigation of impacted permanent teeth except the third molar in Chinese patients through an x-ray study","volume":"68","author":"Hou \n R,","year":"2010","unstructured":"Hou \n R, \n \n \n Kong \n L, \n \n \n Ao \n J, \n \n \n et al.. Investigation of impacted permanent teeth except the third molar in Chinese patients through an x-ray study. J Oral Maxillofac Surg. 2010;68:762\u2013767."},{"key":"i0003-3219-87-4-590-b08","series-title":"Oral Surg Oral Med Oral Pathol","first-page":"916","article-title":"A survey of 3,874 routine full mouth radiographs","volume":"14","author":"Dachi \n SF,","year":"1961","unstructured":"Dachi \n SF, \n \n \n Howell \n FV. \n \n \n A survey of 3,874 routine full mouth radiographs. Oral Surg Oral Med Oral Pathol. 1961;14:916\u2013924."},{"key":"i0003-3219-87-4-590-b09","series-title":"Angle Orthod","first-page":"24","article-title":"The incidence of anomalous maxillary lateral incisors in relation to palatally-displaced cuspids","volume":"51","author":"Becker \n A,","year":"1981","unstructured":"Becker \n A, \n \n \n Smith \n P, \n \n \n Behar \n R. \n \n \n The incidence of anomalous maxillary lateral incisors in relation to palatally-displaced cuspids. Angle Orthod. 1981;51:24\u201329."},{"key":"i0003-3219-87-4-590-b10","series-title":"Br J Orthod","first-page":"9","article-title":"Morphology of the maxillary lateral incisor in cases of unilateral impaction of the maxillary canine","volume":"16","author":"Oliver \n RG,","year":"1989","unstructured":"Oliver \n RG, \n \n \n Mannion \n JE, \n \n \n Robinson \n JM. \n \n \n Morphology of the maxillary lateral incisor in cases of unilateral impaction of the maxillary canine. Br J Orthod. 1989;16:9\u201316."},{"key":"i0003-3219-87-4-590-b11","series-title":"Angle Orthod","first-page":"249","article-title":"The palatally displaced canine as a dental anomaly of genetic origin","volume":"64","author":"Peck \n S,","year":"1994","unstructured":"Peck \n S, \n \n \n Peck \n L, \n \n \n Kataja \n M. \n \n \n The palatally displaced canine as a dental anomaly of genetic origin. Angle Orthod. 1994;64:249\u2013256."},{"key":"i0003-3219-87-4-590-b12","series-title":"Am J Orthod","first-page":"236","article-title":"Orthodontic considerations in the treatment of maxillary impacted canines","volume":"81","author":"Fournier \n A,","year":"1982","unstructured":"Fournier \n A, \n \n \n Turcotte \n J, \n \n \n Bernard \n C. \n \n \n Orthodontic considerations in the treatment of maxillary impacted canines. Am J Orthod. 1982;81:236\u2013239."},{"key":"i0003-3219-87-4-590-b13","series-title":"Am J Orthod","first-page":"125","article-title":"The etiology of maxillary canine impaction","volume":"84","author":"Jacoby \n H.","year":"1983","unstructured":"Jacoby \n H. \n \n \n The etiology of maxillary canine impaction. Am J Orthod. 1983;84:125\u2013132."},{"key":"i0003-3219-87-4-590-b14","series-title":"Fortschr Kieferorthop","first-page":"97","article-title":"The etiology of canine tooth impaction: a space analysis","volume":"55","author":"Stellzig \n A,","year":"1994","unstructured":"Stellzig \n A, \n \n \n Basdra \n EK, \n \n \n Koumrposch \n G. \n \n \n The etiology of canine tooth impaction: a space analysis. Fortschr Kieferorthop. 1994;55:97\u2013103."},{"key":"i0003-3219-87-4-590-b15","series-title":"Zhonghua Kou Qiang Yi Xue Za Zhi","first-page":"483","article-title":"Clinical investigation of impacted maxillary canine","volume":"41","author":"Zhong \n YL,","year":"2006","unstructured":"Zhong \n YL, \n \n \n Zeng \n XL, \n \n \n Jia \n QL, \n \n et al. \n Clinical investigation of impacted maxillary canine. Zhonghua Kou Qiang Yi Xue Za Zhi. 2006;41:483\u2013485."},{"key":"i0003-3219-87-4-590-b16","series-title":"Eur J Orthod","first-page":"302","article-title":"The position of maxillary canine impactions and the influenced factors to adjacent root resorption in the Korean population","volume":"34","author":"Kim \n Y,","year":"2012","unstructured":"Kim \n Y, \n \n \n Hyun \n HK, \n \n \n Jang \n KT. \n \n \n The position of maxillary canine impactions and the influenced factors to adjacent root resorption in the Korean population. Eur J Orthod. 2012;34:302\u2013306."},{"key":"i0003-3219-87-4-590-b17","series-title":"Eur J Orthod","first-page":"135","article-title":"Familial trends in palatal canines, anomalous lateral incisors and related phenomena","volume":"12","author":"Zilberman \n Y,","year":"1990","unstructured":"Zilberman \n Y, \n \n \n Cohen \n B, \n \n \n Becker \n A. \n \n \n Familial trends in palatal canines, anomalous lateral incisors and related phenomena. 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