my kid has bad teeth.some of get brown and some get broken.. please suggest what happened to her..she is not having proper weight..too

A. It can be due to cavities. Visit a paediatric dentist for check up. Brush twice daily with fluoridated toothpaste. Rinse mouth after every meal. Avoid giving chocolates and other sugar rich foods. A proper examination by the dentist is required to find out the underlying cause so that appropriate treatment can be started at the right time.