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Changes in the caries prevalence of 11–12‐year‐old schoolchildren in the North‐West of England from 1968 to 1981
Author(s) -
Clerehugh Valerie,
Blinkhorn Anthony S.,
Downer Martin C.,
Hodge Hilary C.,
RuggGunn Andrew J.,
Mitropoulos Cynthia M.,
Worthington Helen V.
Publication year - 1983
Publication title -
community dentistry and oral epidemiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.061
H-Index - 101
eISSN - 1600-0528
pISSN - 0301-5661
DOI - 10.1111/j.1600-0528.1983.tb01393.x
Subject(s) - medicine , dentistry , north west , geography , physical geography
Since 1968, six caries clinical trials have been conducted in the North‐West of England by different examiners using the same diagnostic system, and a steady reduction in caries prevalence in 11–12‐yr‐old schoolchildren has been recorded. In the present study, five of the examiners revisited some of the schools which participated in their original trials and each examined between 196 and 296 children. The time intervals between the original and repeat examinations were 12, 10, 8, 5 and 3 yr. Percent caries reductions (PCRs) ranged from 19 to 33 for DMFT and from 24 to 35 for DMFS but the PCRs did not relate to the time intervals between examinations. The PCRs were greater on free smooth and approximal surfaces than on fissure surfaces and for the anterior teeth than for the mouth as a whole, suggesting that fluoride may have played a role in the reductions.