title: Prevalence and severity of molar incisor hypomineralization in children aged 11-16 years of a city in Karnataka, Davangere.
abstract: BACKGROUND
  Molar incisor hypomineralization (MIH) describes the clinical picture of hypomineralization of systemic origin affecting one or more first permanent molar. There is a rarity of prevalence studies in Indian population.
  
  
  OBJECTIVE
  The main aim of this study was to investigate the prevalence of MIH in a population of South Indian children.
  
  
  METHODS
  A cross-sectional epidemiological survey, included 2000 children aged 11-16 years chosen by stratified random sampling from government and private schools of Davangere, a city in South India.
  
  
  METHODS
  Evaluation of MIH and decayed, missing and filled teeth was carried out in these children by a calibrated examiner. The severity of hypomineralization was recorded according to the Wetzel and Reckel scale.
  
  
  METHODS
  Chi-square test was used to analyze the categorical data. P ≤ 0.05 was considered for statistical significance.
  
  
  RESULTS
  About 8.9% of all examined children showed at least one ill-structured first permanent molar in terms of MIH. The male and female ratio was found to be 1:1.1. The decreasing order of occurrence of MIH affected teeth were permanent maxillary molars, maxillaryincisors, mandibular molars and the mandibular incisors.
  
  
  CONCLUSIONS
  The prevalence of MIH in the permanent dentition of south Indian children was 8.9%. There is a need for a proper planned preventive and restorative program with regard to the increasing prevalence of MIH.
authors.affiliation: Department of Pedodontics and Preventive Dentistry, Syamala Redddy Dental College, Bengaluru, Karnataka, India.
authors.forename: M
authors.initials: M
authors.lastname: Kirthiga
authors.forename: P
authors.initials: P
authors.lastname: Poornima
authors.forename: R
authors.initials: R
authors.lastname: Praveen
authors.forename: P
authors.initials: P
authors.lastname: Gayathri
authors.forename: M
authors.initials: M
authors.lastname: Manju
authors.forename: M
authors.initials: M
authors.lastname: Priya
mesh_terms: D000293:Adolescent; D002648:Child; D002947:Cities / Q000453:epidemiology; D003430:Cross-Sectional Studies; D003744:Dental Enamel Hypoplasia / Q000453:epidemiology* / Q000473:pathology; D019229:Dentition, Permanent; D005260:Female; D006801:Humans; D007180:Incisor / Q000473:pathology; D007194:India / Q000453:epidemiology; D008297:Male; D008963:Molar / Q000473:pathology; D015995:Prevalence; D012720:Severity of Illness Index