An Eggsperiment on Teeth

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This Catalyst article describes an experiment with fluoride toothpaste on eggshells (as a substitute for teeth). Both teeth and eggs contain calcium compounds which can be attacked by acid. When an egg is put in vinegar the shell is weakened by the acid making it soft and more fragile. When teeth are exposed to acids in the mouth they become more vulnerable to cavities. The article explains how the use of fluoride can protect teeth and eggs.

This article is from Catalyst: GCSE Science Review 2010, Volume 20, Issue 2.

Catalyst is a science magazine for students aged 14-19 years. Annual subscriptions to print copies of the magazine can be purchased from Mindsets.

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