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ObjectiveTo evaluate the association between sociodemographic factors and self‐reported use of mouthwashes in a city in the south of Brazil over a time span of 13 years.
MethodsThe study involves a comparison of two household surveys conducted in 1996 and 2009. Respectively, 850 and 982 households were included in each year. The mother of the family answered to a structured questionnaire to provide...
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