Tooth formation - delayed or absent

Alternative names:

delayed or absent tooth formation; teeth - delayed or absent formation

Definition:

Delay in the emergence of teeth, or no development of teeth.

Considerations:

The timing of the first appearance of teeth varies. Most infants get their first tooth between 6 and 9 months, although earlier or later eruption may be normal.

Specific diseases can have a profound effect on tooth shape, tooth color, time of appearance, or absence of teeth. Delayed or absent tooth formation can result from many different conditions, including (but not limited to) those listed in this document.

Common causes:

• Down's syndrome
• hypothyroidism
• hypoparathyroidism
• ectodermal dysplasia
• chondroectodermal dysplasia
• cleidocranial dysostosis
• Apert's syndrome
• progeria
• incontinentia pigmenti achromians

Note: There may be other causes of delayed or absent tooth formation. This list is not all inclusive, and the causes are not presented in order of likelihood. The causes of this symptom can include unlikely diseases and medications. Furthermore, the causes may vary based on age and gender of the affected person, as well as on the specific characteristics of the symptom such as quality, time course, aggravating factors, relieving factors, and associated complaints. Use the Symptom Analysis option to explore the possible explanations for delayed or absent tooth formation, occurring alone or in combination with other problems.