Why do we have two sets of teeth? Operation Ouch CBBC

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Did you know everyone has two sets of teeth whilst they're growing up? It's perfectly normal! Find out why in this clip from Operation Ouch!

CBBC aims to encourage children to find out more about existing interests and inspire them to develop new ones; helps them understand the world around them and provides an entertaining watch when they just want to relax.

70% of 7-12 year olds now go online most days in the week too. Unique browsers to the CBBC website currently stand at over 915,000 per week.

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