What are you like!

The dentist informed me I'm brushing my teeth to hard and not doing my gums any favours so advised me to buy an electric toothbrush that alarms when you are brushing too hard, is there such a thing?

So after deciding on my new electric toothbrush, it got delivered today and totally confused me as to why it only had a 2 way pin plug, only to find out you have to buy an adaptor! How crap is that!