my daughter is 15 months old she has grown only 2 teeth in lower jaw.. is it any big problem that she doesn't show any tooth scar also on other locations

A. Babies are usually born with 20 baby teeth (also known as primary teeth). They start to come through the gums at about 6 months of age. This process is called teething. By the time your baby is 2 to 3 years old, all their teeth will usually have appeared.