Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/50614
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Type: Journal article
Title: Changing Inequalities in the Distribution of Caries Associated with Improving Child Oral Health in Australia
Author: Armfield, J.
Spencer, A.
Slade, G.
Citation: Journal of Public Health Dentistry, 2009; 69(2):125-134
Publisher: AAPHD National Office
Issue Date: 2009
ISSN: 0022-4006
1752-7325
Statement of
Responsibility: 
Jason M. Armfield, A. John Spencer and Gary D. Slade
Abstract: Objectives: This study aimed to document the changing distribution of and inequalities in dental caries in Australian children across the 25-year period from 1977 to 2002. Methods: Oral health data were obtained from Australia's national Child Dental Health Survey. Measures of caries distribution included the Significant Caries Index and the proportions of children with high caries experience [decayed, missing and filled teeth (DMFT) ≥4], while inequality was assessed by using Gini coefficients calculated from Lorenz curves. Changes in caries distribution were compared with changes in child dmft/DMFT. Results: While appreciable reductions occurred in child caries experience, in terms of both mean dmft/DMFT and for those children with the poorest oral health, inequalities in the distribution of caries experience increased across the 25-year period. Inequalities in the distribution of decayed and filled teeth differed for the deciduous and permanent dentition and, in the permanent dentition, became increasingly similar in the 1990s. Conclusions: Increasing inequalities in child dental caries in Australia must be interpreted in the context of declines in both mean caries experience and in the caries experience of those children with the poorest oral health. The Gini coefficient documents that the majority of the caries experience is increasingly being confined to a smaller percentage of the child population; however, this is a consequence of population-wide child oral health improvements.
Keywords: dental caries; inequalities; public health dentistry; children; Gini coefficient; Australia
Description: © 2009 American Association of Public Health Dentistry
RMID: 0020090767
DOI: 10.1111/j.1752-7325.2008.00110.x
Appears in Collections:Dentistry publications

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