Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Weyers acrofacial dysostosis ?
    ### Response:
    Weyers acrofacial dysostosis is a disorder that affects the development of the teeth, nails, and bones. Dental abnormalities can include small, peg-shaped teeth; fewer teeth than normal (hypodontia); and one front tooth instead of two (a single central incisor).
    