When babies are born, they already have teeth under their gums. The first tooth usually begins to erupt at the age of six months. The first two teeth that enter generally are in the lower half, followed by the four in the upper middle. Most children have teeth when they turn 3 years old. Some children do not get their teeth at the same time. This can be due to several factors. If a child does not have any teeth at the age of 18 months, they should be taken to a pediatric dentist to diagnose problems.
Delay in teething can be a symptom of other health problems. Babies who were born prematurely or had a low birth weight can get their teeth late and may also have enamel defects. Some genetic conditions also one of the reasons for late teeth. Deficiency in vitamins and minerals, especially calcium and vitamin D may be a reason for late teeth in children.
However, you do not need to worry about late teeth, since your child may need orthodontic work. The milk teeth serve as a guide for permanent teeth. They also help babies chew and get the nutrition they need. In many cases, a delay in teething is not cause for alarm, but you should take your child to a dentist if no teeth have emerged at the age of 18 months. The dentist can look for possible medical causes.