I feel really slack about the way we go with brushing Em's teeth, but I'm not really sure how to get it done to be honest...

She won't let you do it for her. You'd have to physically hold her down to do it, and of course I don't want to do that. She'll come & brush her teeth with me most mornings, but it's fairly touch & go. If she wants to she will, but if I try to push the issue she'll resist. Night times she very rarely will do it. Also, of course, all she really does is suck the toothpaste off, not muct tooth brushing actually happens.

Any advice????