Prevalence of non-cavitated and cavitated carious lesions in a random sample of 7-9-year-old schoolchildren in Montreal, Quebec

Community Dent Oral Epidemiol. 1992 Oct;20(5):250-5. doi: 10.1111/j.1600-0528.1992.tb01693.x.


This report describes the prevalence of non-cavitated and cavitated carious lesions in 911 randomly selected children in grades one through three on the Island of Montreal, Quebec, Canada. The criteria for diagnosis were developed for a longitudinal epidemiological study of restorative treatment decisions by dentists practising under a provincial dental insurance program for children. The intra- and inter-examiner reliability correlation coefficients of the two examiners were excellent (Kappa > or = 0.80). The most frequent carious lesion found in the examined children were non-cavitated carious lesions (incipient) within 1.5 of the gingival line on smooth tooth surfaces, and stained or non-cavitated carious lesions on pits and fissures. Out of 911 children in the study, 19.6% had sealants. Children whose parents completed a university education had a significantly lower prevalence of non-cavitated and cavitated carious lesions and fillings, and a significantly higher mean number of sealants than children whose parents had only primary school education. Education status of the parents was a significant risk marker of children with high caries experience and these children had a significantly higher mean number of non-cavitated carious lesions. This study has found that non-cavitated carious lesions are significantly more prevalent than cavitated carious lesions in children.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Chi-Square Distribution
  • Child
  • Dental Caries / diagnosis
  • Dental Caries / epidemiology*
  • Dental Fissures / epidemiology*
  • Educational Status
  • Female
  • Humans
  • Male
  • Observer Variation
  • Parents
  • Prevalence
  • Quebec / epidemiology
  • Risk Factors
  • Socioeconomic Factors