Influence of exposure to fluoridated water on socioeconomic inequalities in children's caries experience
- 1 April 1996
- journal article
- Published by Wiley in Community Dentistry and Oral Epidemiology
- Vol. 24 (2), 89-100
- https://doi.org/10.1111/j.1600-0528.1996.tb00822.x
Abstract
This study aimed to evaluate inequalities in children's dental caries experience among socioeconomic status (SES) groups and to investigate effects of exposure to fluoride in water on those inequalities. Cross-sectional data were obtained from 6704 Queensland children aged 5–12 years and 6814 South Australian children aged 5–15 years. School dental therapists and dentists recorded dmfs and DMFS data. A questionnaire to parents sought information about household SES and each child's lifetime exposure to fluoridated drinking water. SES, fluoride exposure and multiplicative interactions between the two were used as explanatory variables in least squares models in which dmfs and DMFS were dependent variables. Additive interactions were evaluated by calculating the excess rate of disease. In both states, children from low SES groups (categorized by household income or parental education) had higher mean dmfs and DMFS values than children from high SES groups (pp<0.01) after controlling for exposure to fluoride in drinking water. In Queensland, there was a significant multiplicative interaction whereby SES inequalities were lower among children exposed to fluoride: dmfs ratios between low-and high-income groups ranged among ages from 1.54 to 3.56 for children with no exposure to fluoride and from 0.84 to 2.07 for children with lifetime exposure to fluoride. Multiplicative interactions were not statistically significant in South Australia or when DMFS was the dependent variable. However, additive interactions were consistent and most pronounced for deciduous teeth in both States. Absolute differences in caries experience between low and high SES children were greater among non-exposed groups due to the higher underlying levels of caries experience of children with no exposure to fluoride in water.Keywords
This publication has 15 references indexed in Scilit:
- FLAWED FOUNDATION: A RE‐EXAMINATION OF THE SCIENTIFIC BASIS FOR A DENTAL BENEFIT FROM FLUORIDATIONCommunity Health Studies, 1990
- The effect of fluoride consumption and social class on dental caries in 8‐year‐old childrenAustralian Dental Journal, 1990
- The relationship between fluoridation, social class and caries experience in 5-year-old children in Newcastle and Northumberland in 1987British Dental Journal, 1989
- The Pre‐and Posteruptive Effects of Fluoride in the Caries DeclineJournal of Public Health Dentistry, 1988
- The mystery of declining tooth decayNature, 1986
- Relationship between fluoridation and socioeconomic status on dental caries experience in 5‐year‐old New Zealand childrenCommunity Dentistry and Oral Epidemiology, 1984
- Oral conditions in Australian children of Aboriginal and Caucasian descentCommunity Dentistry and Oral Epidemiology, 1980
- The dental health and habits of South Australian children from different socio‐economic environmentsAustralian Dental Journal, 1971