Supernumerary Teeth in Pediatric Dental Patients

Hyperdontia (also known as having supernumerary teeth) is a condition that presents as having extra (supernumerary) teeth in the mouth. Pediatric dental patients with extra teeth may have orthodontic issues in the future which can negatively impact their oral health. Sometimes the teeth need to be removed and/or orthodontic treatment is necessary. Certain risk factors can increase the odds of developing Hyperdontia including comorbid conditions like cleft palate, cleft lip, Gardner syndrome, cleidocranial dysplasia and Ehler-Danlos syndrome.


Supernumerary teeth are thought to be caused by genetic factors. When the teeth are developing, the cells that initiate the tooth’s formation can become overactive, which may cause extra teeth to develop. Hyperdontia is generally rare but is more common in males than in females.

Types of Supernumerary Teeth

There are three main types of extra teeth, all characterized by the location that they develop in within the mouth. The following are the three main types:

  • When a supernumerary tooth grows behind your four front teeth, it is referred to as a mesiodens.
  • A molar that grows in the back of the mouth, adjacent to your other molars.
  • An extra tooth that develops in line with the other molars in the back of the mouth.

Associated Risks

Pediatric dental patients with Hyperdontia have an increased risk of developing other oral health issues because of their extra teeth. Some of these issues may include the following:

  • Cysts
  • Tumors
  • Aspiration if a loose tooth passes into the lung
  • Delayed eruption of adjacent adult teeth
  • Crowding


In order to diagnose hyperdontia, a pediatric dentist will need to take x-rays and do a thorough exam. Sometimes a CT scan of the jaw is needed to ensure that no other supernumerary teeth are developing within the jaw and get a more detailed look at the mouth.


In cases where a child has supernumerary teeth, they usually require extraction to prevent the aforementioned associated risks. In some cases, orthodontic treatment may be necessary as well.

Advanced Children’s Dentistry is a pediatric dentist in Garden City, NY that provides a relaxing and educational atmosphere for all of our little patients! Schedule a pediatric dental appointment at 516-758-KIDS today.


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