My daughter aged 7 has yellow stains on both front teeth. She lost her baby teeth quite young and now has 8 adult teeth. We brush teeth twice a day but this has made no difference. She is an active healthy girl but doesn't eat much in way of vegetables. She does like her fruit though. Any suggestions to what may be causing this would be of help.' I have made an appt with the school dentist but I am wondering if I should take her to my dentist.