title: Dental erosion among 12 year-old Libyan schoolchildren.
abstract: OBJECTIVE
  As there are limited data on dental erosion in Libya, the aim of this study was to assess the prevalence and severity of dental erosion in a sample of 12 year-old children in Benghazi, Libya.
  
  
  METHODS
  Cross-sectional observational study.
  
  
  METHODS
  Elementary schools in Benghazi, Libya.
  
  
  METHODS
  A random sample of 791 12 year-old children (397 boys and 394 girls) attending 36 schools.
  
  
  METHODS
  Clinical dental examination for erosion using UK National Diet and Nutrition Survey (2000) criteria and self-completion questionnaire.
  
  
  METHODS
  The area and depth of dental erosion affecting the labial and palatal surfaces of the upper permanent incisors and occlusal surfaces of the first permanent molars.
  
  
  RESULTS
  Dental erosion was observed in 40.8% of subjects; into enamel affecting 32.5%, into dentine affecting 8.0% and into pulp affecting 0.3% of subjects. Based on area affected, 323 subjects (40.8%) exhibited dental erosion (code > 0), with 32.6% of these subjects having erosion affecting more than two thirds of one or more surfaces examined. Mean total scores for dental erosion for all surfaces per mouth by area and by depth were both 2.69 (sd 3.81). Of the 9492 tooth surfaces examined, 2128 surfaces (22.4%) had dental erosion. Girls had more experience of erosion than boys at all levels of severity (p = 0.001).
  
  
  CONCLUSIONS
  In a cohort of 12 year-old Libyan schoolchildren, more than one third of children examined showed dental erosion, requiring clinical preventive counselling. Significantly more erosion occurred in girls than boys.
authors.affiliation: Centre for Oral Health Research, School of Dental Sciences, Newcastle University, UK.
authors.forename: R
authors.initials: R
authors.lastname: Huew
authors.forename: P J
authors.initials: PJ
authors.lastname: Waterhouse
authors.forename: P J
authors.initials: PJ
authors.lastname: Moynihan
authors.forename: A
authors.initials: A
authors.lastname: Maguire
mesh_terms: D002648:Child; D015331:Cohort Studies; D003430:Cross-Sectional Studies; D003743:Dental Enamel / Q000473:pathology; D003782:Dental Pulp / Q000473:pathology; D003804:Dentin / Q000473:pathology; D004522:Educational Status; D005260:Female; D006801:Humans; D007180:Incisor / Q000473:pathology; D008002:Libya / Q000453:epidemiology; D008297:Male; D008963:Molar / Q000473:pathology; D010290:Parents / Q000193:education; D015995:Prevalence; D012737:Sex Factors; D012923:Social Class; D019228:Tooth Crown / Q000473:pathology; D014077:Tooth Erosion / Q000453:epidemiology*; D014504:Urban Health / Q000706:statistics & numerical data