Not sure if this works with all kids, or just my strong willed little little munchkin. I told her one day that she wasn't allowed to brush her teeth, just mum and Dad were because they were bigger. She really wanted a turn but i said no, when she was bigger. Then a bit later on, i said "Are you big enough to brush your teeth now?" She was so excited. I told her i would have a turn first then she could have a go. I also let her have a turn at brushing my teeth. It's 50/50 as to how effective the molar brushing is, but it is certainly an improvement on what it was. Prior to that she just sucked the toothpaste off too. So now i always have a turn first or she's not allowed. Seems to work for her, but pretty sure it has a bit to do with her personality too.