So yet another morning started with an argument about tooth brushing 
Dd is 8.5. Her teeth aren't brilliant, she has some plaque build up on her bottom teeth. She's at that in between stage of some adult teeth, some baby teeth, gaps and sensitivity when she has a wobbly one. She was brushing her own teeth independently for a while but then I noticed that she wasn't really brushing properly I went back to helping. Dentist says that some children don't have the manual dexterity to brush properly yet.
But each time we brush she makes a huge fuss. She has a VERY low pain threshold and complains that it hurts, sometimes the gum bleeds very slightly which she fusses about. She can't seem to move her tongue and lips out of the way so I can get to the front bottom ones.
Today resulted in me losing patience and her sobbing 
She's using a manual toothbrush, would an electric help? I have suggested it but she's not keen.