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Three-year root caries increments: implications for clinical trials.

G S Leske1, L W Ripa

  • 1Department of Children's Dentistry, School of Dental Medicine, State University of New York, Stony Brook 11794-8701.

Journal of Public Health Dentistry
|January 1, 1989
PubMed
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Most adults in fluoride-deficient areas avoid root caries. However, older individuals and those with prior root decay are at higher risk for developing new root lesions.

Area of Science:

  • Dentistry
  • Epidemiology

Background:

  • Root caries is a significant oral health concern, particularly in adults.
  • Fluoride exposure is known to be protective against dental caries.

Purpose of the Study:

  • To investigate the incidence and risk factors of root caries in an adult population residing in fluoride-deficient communities.
  • To identify predictors for the development of root caries in a longitudinal study.

Main Methods:

  • A three-year longitudinal study involving 796 adult subjects from fluoride-deficient Long Island, New York.
  • Visual-tactile examinations were conducted to assess root caries status.
  • Statistical analysis was performed to identify associations between age, baseline root decay, and new lesion development.

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Main Results:

  • 81.4% of subjects remained free of root caries over the three-year period.
  • The incidence of new root caries was 0.8 decayed, missing, or filled surfaces (DFS) per year among affected subjects.
  • Increased age (especially ≥45 years) and a history of root caries at baseline were significant risk factors for developing new root lesions.

Conclusions:

  • Root caries incidence can be low even in fluoride-deficient areas, with most adults remaining unaffected.
  • Age and prior root decay are key predictors for future root caries development.
  • Clinical trial recruitment for root caries prevention should consider patient age and baseline caries history for accurate risk stratification.