Why do people become dentists?

The dentists' chair is not everyone's favourite place. Have you ever sat there wondering, why would anyone become a dentist?

We take a trip to dental school to find out why so many people get into dentistry, and the skills it takes. 

Also, are we doing enough to weigh up the risks vs benefits of CT scanning? 

And how an autoimmune skin condition actually affects the whole body, particularly the heart.

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