This has been available for a while but I've only just been told about It can't see it's been posted on here before. Thought I would share incase there are other parents of children who dislike brushing their teeth!
Apps available to download for free on iPhone & Android
The child gets to pick a fun character, when brushing commences a 2 minute song entertains them for the duration of brushing. They are rewarded afterwards with stars which they can use to dress/accessorise their character.
After months of tantrums in my house at teeth brushing time I think this is fab, just keep your phone away from the toilet! :)