A Gravimetric Study of the Ingestion of Toothpaste by Children

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Abstract
Dentifrice usage studies were made in a group of 44 Edinburgh children aged between 3 and 6 years using a gravimetric technique based on the polishing agent in the dentifrice. The amount of paste apparently swallowed during brushing averaged 0.5 g or less for 70% of the subjects; the worst performer apparently swallowed an average of 1.16 g per brushing. In contrast to previous studies employing a urinary or faecal marker which will underestimate the amount ingested if samples are lost, the present technique will overestimate the amount ingested under these circumstances. Hence the true picture probably lies between the two sets of results.

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