All primary teeth should be in by the time your child turns 3 years old. The process of getting those twenty little pearly whites, though, can be quite an ordeal. Some children get all their teeth without batting an eye, while others (and their families) agonize over every tooth.

The primary teeth begin to form in the uterus when the fetus is developing. The actual eruption of teeth through the gums, called teething, begins when a baby is between four and nine months old. Sometimes teething can occur earlier or later than this and still be normal. Your doctor may want to do more testing if teething happens too far outside of this range.

The first teeth to show are typically the incisors: first the lower front ones, followed by the upper front ones. Although some books and charts may give you an idea of how teething progresses, each child is different. Don't be alarmed if your child's teeth aren't erupting in the pattern illustrated on the charts.

When your child is teething, They may be more irritable than usual or might chew on everything within reach. These are all normal teething symptoms. However, if your child has a fever and diarrhea, call the pediatrician. A common myth about teething is that it causes a fever. This is not true. If your child has a fever, there is a reason for it, and it is unrelated to their newly erupting teeth.