Oral health of Polish three-year-olds and mothers' oral health-related knowledge.

Objectives: To evaluate the oral health of Polish three-year-olds, to investigate oral health-related knowledge, habits and educational levels of their mothers, and to determine whether mothers' health-related knowledge influenced caries severity in their children.

Design: A cross-sectional. nationwide oral health survey of three-year-olds was performed in 2002.

Changing oral health status and oral health behaviour of schoolchildren in Poland.

Objectives: To assess the occurrence of dental caries over time in Polish schoolchildren, to analyse the oral health behaviour of children and mothers, and to compare the levels of dental knowledge and attitudes of mothers and schoolteachers.

Design: Cross-sectional oral health surveys of children aged 6 and 12 years were carried out in 1995, 1997, 1999 and 2000; questionnaire surveys of a sample of mothers and schoolteachers were conducted in 1999.

Setting: The surveys in schools intended to aid planning and evaluation of the revitalised school oral health programme in Poland.