Prevalence and intraoral distribution of root caries in an adult population

Ralph V. Katz, Stanley P. Hazen, Neal W. Chilton, Richard D. Mumma

Research output: Contribution to journalArticle


A descriptive epidemiologic survey of root caries in 473 20- to 64-year-olds revealed an age- and sex-adjusted overall root caries index (RCI) rate of 11.4% indicating that approximately one in nine surfaces with recession exhibited root caries. Although age-adjusted RCI rates for males and females were similar, the sex-adjusted RCI rates for each decade of life between 20 and 60 increased from 1.1% to 4.7% to 13.0% to 22.0%. Intraoral distribution patterns for root caries revealed that the most frequently attacked tooth types were mandibular molars (RCI = 40%), mandibular premolars (RCI = 25%) and maxillary canines (RCI = 23%). The least frequently attacked tooth types were the mandibular incisors (RCI = 2%). The interproximal surfaces exhibited the highest RCI rates in the maxillary arch while the buccal surfaces showed the highest RCI rates in the mandibular arch.

Original languageEnglish (US)
Pages (from-to)265-271
Number of pages7
JournalCaries research
Issue number3
StatePublished - Jan 1 1982



  • Adult population
  • Epidemiology
  • RCI rates
  • Root Caries

ASJC Scopus subject areas

  • Dentistry(all)

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