Below is an instruction from Human. Write a response.
    ### Instruction:
    What causes Gum (Periodontal) Disease ?
    ### Response:
    If your hands have become stiff because of arthritis or if you have a physical disability, you may find it difficult to use your toothbrush or dental floss. The following tips might make it easier for you to clean your teeth and gums. Make the toothbrush easier to hold.
    