dd has her first tooth, she's nearly 8 months old. am i supposed to have got her a tooth brush by now? i looked at some today, there are some simple normal ones then some funny looking ones that are like a mouth guard with a handle, so baby just bites down on it. is that a gimmick? also, toothpaste? do i need that now? which one do you use? they all look a bit gimmicky, cartoon faces and all that. any ingredients i should avoid or look for?