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Articles on Tooth brushing

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People worked for healthy teeth long before nylon brushes hit the market. Mila Davidovic/Shutterstock.com

How did people clean their teeth in the olden days?

People have probably always wanted clean and healthy teeth. What they historically used to achieve dental hygiene might surprise you.
The edges of your lost tooth are sharp because when the root of the baby tooth is being eaten away, it tends to start from the middle of the root. That leaves a sharp edge behind when the tooth breaks off. Flickr/Stephanie Young

Curious Kids: My tooth fell out. Why is it so spiky on the bottom?

Nicholas, aged 6, was watching TV one day when his tooth fell out. He noticed that the bottom edge of the tooth was very spiky. Now he wants to know why.

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