I bought the wrong one (Brand : Lion) for my girl before, that's why she didn't like to brush her teeth. Everytime, I force her to brush, really hard!
Then I bought first teeth for two months, I found she likes to brush her teeth because it is sweet. Then I use the old one combine with first teeth,one little bean each on toothbrush. I found she is okay with it. We have to train her accept the taste of common toothpaste later...