Social inequalities in oral health are observable regardless of the population, the culture, the method of social classification or the measure of oral health or disease. They exist because of socially determined differences in opportunity, behaviours, beliefs and exposure to the myriad factors which determine our oral health. Behaviours and practices which affect oral health are embedded in the normal patterns of everyday life; those (in turn) are socially determined and differ across the continuum of social status. This presentation focuses primarily on social inequalities in incremental tooth loss because (i) it is a condition which has been shown to have the greatest effect on people's oral‐health‐related quality of life, and (ii) it is cumulative and irreversible. Most of the knowledge base on social inequalities in tooth loss comes from cross‐sectional studies; investigating the phenomenon in a birth cohort can be more informative because it allows us to determine what happens to those inequalities through the life course. Data on incremental tooth loss from a longstanding cohort study (the Dunedin Multidisciplinary Health and Development Study) are presented to illustrate the cumulative and pervasive effect of social inequalities and changes in social status between childhood and adulthood.

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   |texte=   Social inequality in oral health
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