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Causes of Hyperdontia

Hyperdontia is a condition of having too many teeth, or rather extra teeth. These teeth that fill your mouth with more than thirty-two, are often called supernumerary teeth. Don’t think that because your baby teeth have fallen out that this cannot affect you, because this disease affects both primary and permanent teeth.

Although most people who have extra teeth will never actually see them emerge, the condition is detectable through x-rays, and on rare occasions the tooth will expose itself slightly. Also the specific extra tooth may also block other teeth from pushing through the gum line and may cause other dental problems as well.

Hyperdontia can occur due to family genetics but also environmental factors. Of these two though, gene alternations are the most common cause. Specifically it is a defect of the 6th gene, which is the gene that encodes protein substances. Along with hyperdontia its’ suffers may also have had soft spots as children for an extended period of time, and they may also be shorter in stature.

Also the presence of other medical conditions may also cause hyperdontia. For instance children with conditions such as: Gardner’s syndrome, cleft lip, Down syndrome, and leopard syndrome among others may also find they have hyperdontia. In these conditions the hyperdontia teeth are usually in multiples and most often are impacted as well. This finding suggests the extra teeth most likely developed from a third tooth bud or that the permanent tooth bud itself was split.

The environmental causes of hyperdontia are not pinpointed as of yet and more research is being conducted to find what elements may cause this condition outside of gene mutations or deformations.

This condition is most common in the Chinese and South American population with between ten and forty percent of the population effected. The presence in the North part of the Western hemisphere is between .01% and 0.9%.

Luckily the occurrence rate of having extra molars is the rarest form. Most of the additional teeth form next to the incisors. Many dentist recommend that if now growth of molars is detected by age 14 that your child be examined at the risk of having hyperdontia occurring, which could be blocking the growth.

The excess teeth caused by hyperdontia can be removed by from a dentist if comfort becomes and issue, or for cosmetic purposes. A dentist may also recommend removal if other dental problems can be attributed to the condition.