title: Mesiodens: a clinical and radiographic study in children.
abstract: BACKGROUND
  A mesiodens is a supernumerary tooth located in the palatal midline between the two maxillary central incisors. The overall prevalence varies between 0.15 and 1.9%. The present study aimed to evaluate the epidemiological characteristics of mesiodens in the pediatric population.
  
  
  METHODS
  A longitudinal prospective study was carried out in 7932 children to determine the prevalence of mesiodens. The following data were also recorded: age, sex, shape, sagittal position, orientation, eruption status, number and complications caused by mesiodens.
  
  
  RESULTS
  The prevalence of mesiodens in the present study was 0.8%. The sex ratio was 1.78:1, favoring boys. The majority of mesiodens (67.9%) were conical in shape, followed by the supplemental (17.9) and tuberculate (14.1%) types. 71.8% of the mesiodens were palatally placed, 25.6% erupted on the arch and 2.6% were labially positioned. A majority of the mesiodens (62.8%) were vertically aligned. Inverted and horizontal positions were observed in 30.8% and 6.4% of the cases. Most of the mesiodens (53.8%) were impacted, and 14 children had two mesiodens. Most of the mesiodens were associated with complications, and only 26.9% were asymptomatic.
  
  
  CONCLUSIONS
  The prevalence of mesiodens was 0.8% .Conical shape, palatal position and vertical orientation were common characteristic observations in the study.
authors.affiliation: Department of Pedodontics, North Bengal Dental College, PO Sushruthanagar, Dist: Darjeeling, West Bengal, India. msantanu25@gmail.com
authors.forename: S
authors.initials: S
authors.lastname: Mukhopadhyay
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D003970:Diastema; D016021:Epidemiologic Studies; D005260:Female; D006801:Humans; D007194:India / Q000453:epidemiology; D008137:Longitudinal Studies; D008297:Male; D008310:Malocclusion / Q000453:epidemiology; D015995:Prevalence; D011446:Prospective Studies; D012737:Sex Factors; D014095:Tooth, Impacted / Q000453:epidemiology; D014096:Tooth, Supernumerary / Q000145:classification / Q000453:epidemiology*; D014097:Tooth, Unerupted / Q000453:epidemiology