What Ethnicities Commonly Have Shovel-Shaped Teeth?


Quick Answer

Shovel-shaped teeth are a common trait among Native American and Asian populations, according to the U.S. National Library of Medicine. They are rare or absent in populations of European or African descent.

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Full Answer

Three separate studies have reported the heritability of shovel-shaped teeth among Asian and Native American populations to be around 0.75, notes the U.S. National Library of Medicine. Ancient Asian populations, including the indigenous Jomon people, typically have a smaller tooth-shoveling grade than modern Asian populations, although the prevalence of tooth shoveling differs throughout Asia. The allele EDAR 1540C accounts for roughly one-fourth of the total heritability of the trait.

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