What damages our teeth the most?

We have all been told that sugar is bad for our teeth  - but is it really? What else might damage our teeth? 

After not being able to get hold of the tooth fairy and based on the knowledge that eggshells have a similar chemical compound as our tooth enamel, we our using eggshells to conduct an experiment to see how it  reacts in different liquids.  The 5 different liquids displayed will be checked upon throughout the week to see if there are any changes to the appearance and texture of the eggshell. Hopefully, we will have so egg - citing results next week!