Merck Manual

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Supernumerary incisors, dog
supernumerary-incisors-dog-roberts-sized
Supernumerary incisors, dog

    This photograph of a dog illustrates the most common form of hyperdontia in dogs: supernumerary incisors located on the maxilla. There are 4 incisors per arcade instead of the normal 3.

Courtesy of Dr. Ben Colmery III.