Hello doctor My baby is 1 year 22 days old.. He has 4 teeth on his upper jaw.. And only 3 teeth on his lower jaw. In my knowledge, i have read that on lower jaw two of the teeth arrives together, but for my baby only one teeth has arrived, i.e; on lower jaw he has only 3 teeth not eating food , not having milk, became very much cranky, What's the reason behind this does taking pacifier all the time, teeth growth's get stopped? or is there any some other reason