title: Dental erosion in groups of Yemeni children and adolescents and the modification of an erosion partial recording system.
abstract: BACKGROUND
  The prevalence of dental erosion is rising especially among children and adolescents and its grading needs further investigation.
  
  
  OBJECTIVE
  To determine the prevalence and severity of dental erosion in groups of Yemeni children and adolescents, and to clinically compare an erosion partial recording system (EPRS) with a proposed modified-simplified version (EPRS-M).
  
  
  METHODS
  Of 6163 individuals aged 5-6, 13-14 and 18-19 years, 911 were randomly selected, of which 668 participated in the study. Dental erosion was graded using EPRS. EPRS-M was proposed, and its sensitivity and specificity was calculated in relation to EPRS.
  
  
  RESULTS
  Prevalence of erosion extending into dentine on at least one tooth was 6.8% among 5- to 6-year-olds, 3.0% among 13- to 14-year-olds and 14.6% among 18- to 19-year olds. The highest prevalence was 19.2% among girls aged 18-19 years which was significantly higher than boys (10.4%) in the same age group (P = 0.044). Sensitivity and specificity for EPRS-M in relation to EPRS were 85.7% and 100% for primary teeth, and 84.1% and 100% for permanent teeth.
  
  
  CONCLUSIONS
  Dental erosion was common among children and older teenagers and highest among older girls but less common among younger teenagers. The tested accuracy of EPRS-M qualifies it to be used as an initial quick detection tool in future dental erosion research.
authors.affiliation: Department of Clinical Dentistry - Cariology, Faculty of Medicine and Dentistry, University of Bergen, Bergen, Norway.
authors.forename: Amin
authors.initials: A
authors.lastname: Al-Ashtal
authors.affiliation: Department of Clinical Dentistry - Prosthodontics, Faculty of Medicine and Dentistry, University of Bergen, Bergen, Norway.
authors.forename: Anders
authors.initials: A
authors.lastname: Johansson
authors.affiliation: Department of Restorative Sciences, Faculty of Dentistry, Kuwait University, Safat, Kuwait.
authors.forename: Ridwaan
authors.initials: R
authors.lastname: Omar
authors.affiliation: Department of Clinical Dentistry - Cariology, Faculty of Medicine and Dentistry, University of Bergen, Bergen, Norway.
authors.forename: Ann-Katrin
authors.initials: AK
authors.lastname: Johansson
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D003792:Dental Records; D006801:Humans; D015995:Prevalence; D014077:Tooth Erosion / Q000453:epidemiology* / Q000473:pathology; D015006:Yemen / Q000453:epidemiology; D055815:Young Adult