December 2006

Volume 23, Issue 4

The relationship between prevalence and incidence of dental caries. Some observational consequences.

Authors: D. Holst
doi:

Abstract

Objectives: To investigate the relationship between incidence and prevalence of caries. The principles are illustrated by means of Lexis diagrams, which show the relationship between cases of caries belonging to a population with a certain incidence and natural course of the disease in time. The analysis shows how studies on prevalence yield associations that reflect the determinants of the disease progression just as much as the causes of disease. Also the diagnostic criteria of the disease affect the prevalence estimate. The presence of fluoride changes the course of the disease and the prevalence estimate even with an unchanged incidence rate. This knowledge about incidence and prevalence should be taken into consideration when data from cross-sectional and time-series studies are interpreted. In an example from Norway the prevalence of caries was reduced. During the same period fluoride was made universally available, invasive treatment criteria were changed to less invasive and the time between the regular examinations were extended. These factors affect the estimates of caries made by cross-sectional recordings. Key words: Cross-sectional estimates, fluoride, incidence, prevalence, treatment criteria

£10 single article

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Editorial - Presentations and conferences: can we measure their value? 194-196 £10 single article
Caries prevalence in 12-year-old children from Germany. Results of the 2004 national survey 197-202 £10 single article
The relationship between prevalence and incidence of dental caries. Some observational consequences. 203-208 £10 single article
Characteristics attributed to individuals with dental fluorosis 209-216 £10 single article
DIAGNOdent - an adjunctive diagnostic method for caries diagnosis in epidemiology 217-221 £10 single article
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Performance indicators used to assess the quality of primary dental care 228-235 £10 single article
A survey of school dental screening practise in community dental services of England and Wales in 2003 236-238 £10 single article
The prevalence and pattern of hypodontia of the permanent teeth and crown size and shape deformity affecting upper lateral incisors in a sample of Jordanian dental patients. 239-243 £10 single article
Relationship between dental caries experience (DMFS) and dental fluorosis in 12-year-old Puerto Ricans. 244-250 £10 single article
Prevalence of dental caries in obese and normal-weight Brazilian adolescents attending state and private schools. 251-253 £10 single article
Abstracts - Papers presented at the BASCD Spring Presidential meeting in Cambridge, UK, March 2006 254-254 £10 single article

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