So first of all, what's this book about? It's a funny story combined with jokes and makes you want to burst into tears of laughter but sometimes you can feel sorry for the characters. The book tells the story of a boy called Alfie and his best friend Gabz, a girl who doesn't talk a lot. One day their headteacher invites Miss Root, an evil and petrifying dentist into school to give a talk on dental hygiene. And that's where the adventure really starts.

This is not a book to read before you go to the dentist. As the story grows we find that every night Miss Root goes into children's bedrooms who have put their teeth under their pillow for the tooth fairy. She hides under their beds and take their tooth away and leaves something horrid behind like an eyeball that's still moving, a batwing that is still warm, dead slugs, earwigs We would scream if this happened to us, we'd be petrified we'd run away from our houses, she's like a tooth witch. It's like the actual tooth fairy was kidnapped or eaten by a cat.

The book has 440 pages but it was fun to read and didn't take too long and the pictures by Tony Ross are not great…. They're fabulous, fantabulous and scary cool ! Most of us thought the pictures were entertaining and helped us to understand the characters, just one of us thought the pictures weren't so important because we can use our imagination anyway.

The book is very funny and it has lots of made up words which you can use later. For example 'chocolated' which we might use instead of covered in chocolate. Some of us like using weird words such as jellytastic: so if you went to a TV show and were trying out different types of jelly, the best jelly would be jellytastic and would win the best jelly in the universe.

Our whole group really loved this book. We all had different characters that are our favourite. For Joshua, Alfie is the best character, for Eloise and Sarah it's Gabz and for Alhaji it's Raj because he owns a shop and buys out of date sweets and sells it for a full price. We related to some of the characters. One of us is pretty quiet and so really liked the character of Gabz who is a girl who hardly speaks but has hidden depths. One of us worried that our mum might actually be the demon dentist as she pulled out a tooth when brushing them this morning as our member was being too lazy to do them himself! Blood was pouring out of his mouth! There were also some sad bits. The two girls in our group felt really upset about death in the book (we won't tell you who died as we don't want to spoil the story for you).

We are sad to say goodbye to this book. We think there should be a Demon Dentist 2 and maybe even 3 or 4 so we can read about them again. In the end we think this book is tremendous we only have one word to sum it up, jellytastic. Everybody including Queen could read it.

We all to want read more David Walliams books. We recommend it to children aged six and over if they are being read to and seven plus if they read it themselves.

So in conclusion, this book is amazing and spectacular, cooltastic. Some of us give it 10 out of 10 but no one gives it less than seven. For some of us it wasn't a perfect book, no offense to David Walliams, but we still really enjoyed it. What would improve the book? We would have liked it to be in 3D and 3D glasses with it!!!

• Buy this book at the Guardian Bookshop

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