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Volunteers at Baby Basics fill Moses baskets with everything from toiletries to blankets, toothpaste and even some treats.

At the front is a donation section for people to take toys, toothpaste, sunglasses and books.

The mineral is added to some water supplies and brands of toothpaste to help prevent tooth decay.

Dunthorne’s title derives from one of Siegfried’s early professional accomplishments: the manufacture of a radioactive toothpaste that became the choice of the German army.

Prof Anne-Marie Glenny, also from the University of Manchester, said the widespread availability of fluoride toothpaste made the impact of fluoridating water less significant.