The role of Polish school nurses in the oral health promotion for 7-19 year-old children and adolescents.

Eur Arch Paediatr Dent · 2021 · PMC8021534 · PMID 32583292

Europe PMC DOI

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a positive trendno p-value reported

A positive trend in dental hygiene habits in Polish 12-year-old has been observed since the last decades of the twentieth century.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.