What causes discolored teeth in a 2 year old?

TEETH DISCOLORATION. Certain antibiotic like tetracycline can cause teeth discoloration when used among children.
Lots of reasons. Remember that baby teeth start forming before birth. Alteration in enamel may be genetic, caused by virus, cavities, tetracycline, overdosing w fluoride, and so many other reasons. At 2 your child is a year overdue for 1st ck-up and cleaning. Dentist can answer question after examining your child. Please call dentist for appointment now.