Teeth of a "vampire syndrome"

From Wikipedia:

Hypohidrotic ectodermal dysplasia is one of about 150 types of ectodermal dysplasia in humans. Before birth, these disorders result in the abnormal development of structures including the skin, hair, nails, teeth, and sweat glands... Hypohidrotic ectodermal dysplasia is the most common form of ectodermal dysplasia in humans. It is estimated to affect at least 1 in 17,000 people worldwide.

Because some readers of this blog are reluctant to view variants of human development, I'll put the image below the fold..

(For the photo the lips are being displaced by retractors, seen at the corners).

Source, via.