title: Clinical characteristics and complications associated with mesiodentes.
abstract: OBJECTIVE
  The purpose of the present study was to analyze the clinical characteristics and complications of patients with mesiodens.
  
  
  METHODS
  Using the radiographic reviews of patients who visited Seoul National University Dental Hospital from January 2005 through January 2008, 919 patients were identified as having mesiodens (total 1,200 mesiodentes). The number, location, position, eruption status, shape, direction, and complications of the mesiodens and gender and age were collected and analyzed.
  
  
  RESULTS
  The mean patient age was 11.05 years (median 7.58) with a male/female ratio of 2.74:1. The results showed that 71.38% of the patients had 1 mesiodens, 27.75% had 2, 0.65% had 3, and 0.22% had 4 mesiodentes. Complications occurred in 46.92% of the mesiodentes. Of the complications, midline diastema was observed in 35.34%, delayed eruption in 20.60%, displacement in 16.60%, rotation in 11.02%, root resorption of adjacent teeth in 7.58%, cystic changes or cyst formation in 5.29%, and nasal eruption in 3.58%.
  
  
  CONCLUSIONS
  Complications were found in approximately one half of the patients with a mesiodens. Early detection and timely surgical intervention should be emphasized to prevent unwanted complications.
authors.affiliation: Department of Pediatric Dentistry and Dental Research Institute, Seoul National University School of Dentistry, Seoul, Korea.
authors.forename: Hong-Keun
authors.initials: HK
authors.lastname: Hyun
authors.forename: Su-Jin
authors.initials: SJ
authors.lastname: Lee
authors.forename: Sang-Hoon
authors.initials: SH
authors.lastname: Lee
authors.forename: Se-Hyun
authors.initials: SH
authors.lastname: Hahn
authors.forename: Jung-Wook
authors.initials: JW
authors.lastname: Kim
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D003970:Diastema / Q000473:pathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D014096:Tooth, Supernumerary / Q000150:complications* / Q000473:pathology; D055815:Young Adult