My 18th month old absolutely refuses to let us brush her teeth. Sometimes she'll stick the toothbrush into her mouth herself and chew on it for a bit. I took her to a pediatric dentist at 15 months and he said that this chewing action is good for the teeth, too, and that it's not a huge deal yet if she doesn't let us brush her teeth thoroughly. Is anyone a dentist or knows if this is true? It would make me feel better about her tooth care if she'd just let me brush it. I've tried singing her songs, reading books together about teeth brushing, buying her cute toothbrushes, etc but she still doesn't like it. There is a lot of crying involved day and night so I'm not forcing it since I don't want her to develop negative feelings about the process. Any thoughts?