After your baby has a few teeth and turns one, make an appointment to see the dentist. Some say even before baby turns one you can schedule an appointment. Good oral hygiene should start before baby's first tooth to avoid decay and damage to the permanent teeth. After each feeding when baby is born, simply wipe gums down with a soft wash cloth. After the first tooth erupts, start with a soft tooth brush and brush with water. When your baby has a few more teeth, start a daily routine of oral hygiene and tooth paste that is safe to swallow.