Hyperdontia

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Hyperdontia
Synonyms	Supernumerary teeth
Pronounce	N/A
Specialty	N/A
Symptoms	Presence of extra teeth
Complications	Malocclusion, crowding, cyst formation
Onset	Childhood
Duration	Lifelong if untreated
Types	N/A
Causes	Genetic factors
Risks	Gardner syndrome, cleidocranial dysostosis
Diagnosis	Dental X-ray, clinical examination
Differential diagnosis	Odontoma, dental cyst
Prevention	None
Treatment	Extraction of supernumerary teeth
Medication	N/A
Prognosis	Good with treatment
Frequency	~1-4% of the population
Deaths	N/A

Hyperdontia

An example of mesiodens, a type of supernumerary tooth.

Hyperdontia is a condition characterized by the presence of an excessive number of teeth in the mouth. These extra teeth are referred to as supernumerary teeth. Hyperdontia can occur in both the primary dentition and the permanent dentition.

Types of Supernumerary Teeth

Supernumerary teeth can be classified based on their location and morphology. The most common types include:

• Mesiodens: These are extra teeth that occur in the midline of the maxilla, between the two central incisors. Mesiodens are the most common type of supernumerary teeth.
• Paramolars: These are extra teeth located buccally or lingually to the molars.
• Distomolars: Also known as "fourth molars," these are extra teeth located distal to the third molars.
• Supplemental teeth: These resemble the normal series of teeth and are often found in the incisor or molar regions.

Causes

The exact cause of hyperdontia is not well understood, but it is believed to involve a combination of genetic and environmental factors. It is often associated with certain genetic disorders such as Cleidocranial dysostosis and Gardner's syndrome.

Diagnosis

Hyperdontia is typically diagnosed through clinical examination and dental radiography. Panoramic radiographs and cone beam computed tomography (CBCT) are commonly used to assess the number, position, and morphology of the supernumerary teeth.

Treatment

The treatment of hyperdontia depends on the type, number, and position of the supernumerary teeth, as well as the presence of any associated complications. Treatment options may include:

• Observation: In cases where the supernumerary teeth are not causing any problems, they may be left in place and monitored over time.
• Extraction: Supernumerary teeth that cause crowding, impede eruption of normal teeth, or lead to other dental issues are often extracted.
• Orthodontic treatment: In some cases, orthodontic treatment may be necessary to correct any malocclusion or alignment issues caused by the presence of supernumerary teeth.

Complications

Hyperdontia can lead to several complications, including:

• Dental crowding
• Impaction of adjacent teeth
• Malocclusion
• Cyst formation
• Delayed or ectopic eruption of permanent teeth

See also

• Tooth development
• Dental anomalies
• Orthodontics
• Genetic disorders in dentistry