"First visit by first birthday" sums it up. Your child should be seen by a pediatric dentist when the first tooth comes in, usually between 6 and 12 months of age. Early examination and preventive care will protect your child's smile now and in the future.
Patterns of primary tooth eruption can vary from child to child. However, there are usually 8 incisors present by the first year. Usually by three years of age all 20 of the primary teeth are present.