Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) amelogenesis imperfecta ?
    ### Response:
    Amelogenesis imperfecta is a disorder of tooth development. This condition causes teeth to be unusually small, discolored, pitted or grooved, and prone to rapid wear and breakage. Other dental abnormalities are also possible. These defects, which vary among affected individuals, can affect both primary (baby) teeth and permanent (adult) teeth.
    