Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Dentinogenesis imperfecta type 2 ?
    ### Response:
    Dentinogenesis imperfecta type 2 is a rare and severe form of dentinogenesis imperfecta, a condition that affects tooth development. People affected by the condition may have weak and discolored teeth. These problems can affect both primary (baby) teeth and permanent teeth.
    