Anodontia

Medically reviewed by Christine Frank, DDS on November 13, 2017Written by Valencia Higuera on November 13, 2017

What is anodontia?

A toothless smile in a baby is completely normal, but what if their teeth never come in? Anodontia, sometimes referred to as congenitally missing teeth, is a rare genetic condition that causes you to not have any teeth. This is different from having missing teeth due to an injury or dental problem.

Anodontia can affect both baby teeth and primary teeth.

In some cases, you may have partial anodontia, meaning you have some, but not all, of your teeth. Partial anodontia is usually categorized as one of the following, depending on how many teeth you have:

  • Hypodontia. This term is used when one to six permanent teeth are missing.
  • Oligodontia. This term is used when more than six (but not all) permanent teeth are missing.

What causes it?

Anodontia is an inherited genetic defect. The exact genes involved are unknown. However, Anodontia is usually associated with ectodermal dysplasia.

Ectodermal dysplasia is not one disorder but a group of closely related hereditary conditions that affect the hair, nails, skin, and sweat glands. Symptoms of these hereditary conditions include:

In rare cases, anodontia occurs without ectodermal dysplasia. This is likely due to an unknown genetic mutation.

How is it diagnosed?

Anodontia is usually diagnosed if a baby doesn’t start developing teeth by the time they’re about 13 months old. Or it may be diagnosed if a child doesn’t start developing permanent teeth by age 10.

If either of these happens, your dentist may use X-rays to check for teeth in the gums that simply haven’t come in yet. In some cases, children just develop teeth a little later than usual. If the X-ray doesn’t show any teeth, it’s likely anodontia.

How is it treated?

There’s no way to stimulate the growth of congenitally missing teeth. If only a few teeth are missing, treatment might not be needed. However, there are several ways to add artificial teeth to improve appearance and make eating or speaking easier:

  • Dentures. Dentures are removable replacements for missing teeth. They are usually the most effective treatment for complete anodontia.
  • Dental bridges. Bridges are fixed (non-removable) replacements that bind artificial teeth to surrounding teeth to fill in spaces left by missing teeth. They work best if you’re only missing a few teeth.
  • Dental implants. Implants add an artificial root in the jaw to hold a replacement tooth (or teeth) in place. Implants look and feel the most like natural teeth.

Living with anodontia

Besides making eating and speaking difficult, anodontia doesn’t cause many problems on its own. However, if it’s related to ectodermal dysplasia, you may have additional issues related to your hair, nails, skin, or sweat glands. Regardless of the cause, most causes of anodontia can be easily managed with dentures, dental bridges, or dental implants.

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