By Dr. Manish Pandey, BDS, Dental Surgeon
An extra tooth in a child is called a supernumerary tooth. It may be visible in the mouth or found on a dental X-ray when another tooth is slow to come through. An extra tooth between the upper front teeth is often called a mesiodens. It does not always need removal, but a dentist should check its position and whether it is affecting normal tooth eruption.
How can you tell if a child has an extra tooth?
Quick answer: You may see an additional tooth, a front tooth emerging in an unusual position, or one permanent front tooth appearing much later than its counterpart. An unerupted extra tooth cannot be confirmed by looking alone; a dentist may recommend an X-ray when the examination suggests one.
Children’s teeth do not all emerge on the same day, so a small difference in timing is not itself proof of a problem. However, marked asymmetry, an unexplained gap, a rotated tooth, or a tooth that seems blocked deserves a dental appointment. Pain or swelling should be assessed promptly. A dentist will compare the mouth with the expected pattern of primary and permanent teeth and decide whether imaging is appropriate.
What causes an extra tooth in a child?
Supernumerary teeth arise while the teeth are developing. Most appear without a clear cause. Some children have a family history, and extra teeth can also occur with certain genetic conditions. A dentist may ask about medical and family history, but parents should not assume an extra tooth means a child has a syndrome. The number, shape and location vary: an extra tooth may resemble a normal tooth or be small and cone-shaped.
Not every double-looking tooth is truly an extra tooth. Gemination and fusion can make one tooth appear unusually wide. Natal teeth, present at birth, are a different issue. A dental examination helps distinguish these situations.
How do dentists decide whether an extra tooth needs treatment?
The decision depends on whether the extra tooth is in a primary or permanent dentition, where it sits, whether it has erupted, and what it is doing to nearby teeth. A dentist may recommend monitoring when it is not causing trouble. If it blocks a permanent incisor, shifts or rotates a tooth, causes symptoms, or interferes with planned orthodontic care, removal may be considered. The American Academy of Pediatric Dentistry advises individual assessment and careful timing: surgery near developing permanent teeth can itself carry risks.
For a tooth buried in the jaw, the dentist may use an appropriate radiograph to see its relation to developing roots. Imaging should answer a clinical question and use the lowest suitable exposure. If the case is complex, a pediatric dentist, orthodontist or oral surgeon may be involved. In some children a blocked permanent tooth erupts after the obstruction is removed; others need additional orthodontic guidance. No one can promise the same outcome for every child.
Does every extra tooth have to be taken out?
No. An extra tooth that causes no symptoms or damage may be observed with periodic reviews. In particular, removing an unerupted extra tooth in the primary dentition may risk damage to a developing permanent tooth; the timing of any intervention matters. On the other hand, delaying care when a permanent tooth is blocked can complicate its eruption. Ask the treating dentist to explain the benefits and risks of monitoring versus treatment for your child.
When should you book a dental visit?
Arrange a non-urgent visit if you can see what looks like an additional tooth, or if a permanent front tooth is significantly delayed compared with its partner. Seek prompt care for persistent pain, swelling, drainage, or an injury. Do not try to move or remove a tooth at home. Bring any previous dental records or images so the clinician can compare changes over time.
Questions parents ask
Can an extra tooth stop a permanent tooth from coming in?
Yes, its position can block or redirect a permanent tooth, especially an upper front tooth. A dental examination and, when indicated, an X-ray can show whether this is happening.
Will an extra tooth always be obvious?
No. Some stay under the gum and are noticed only because another tooth erupts late or appears displaced. Others are found incidentally on an image taken for a clinical reason.
Will my child need braces after an extra tooth is removed?
Not necessarily. Some teeth erupt into place after the obstruction is managed; others need orthodontic help. Your child’s dentist can discuss the likely path after examining the tooth position and space available.
References
- American Academy of Pediatric Dentistry: Management of the Developing Dentition and Occlusion
- American Academy of Pediatric Dentistry: Oral Surgery and Oral Pathology best practices
- American Association of Orthodontists: Orthodontic terms
Dental disclaimer: This article is general education, not a diagnosis. Decisions about X-rays, observation, removal and orthodontic care require an individual clinical examination.
Featured image: AI-generated illustration for educational purposes only; it is not a diagnostic radiograph.