Pepper stick teeth grinding hazards, including the following aspects: 1, oral mucosa damage: pepper stick is the trunk of the pepper tree polished and made of pepper tree, pepper tree material is relatively hard, children often use the pepper stick made of teeth grinding stick, if the force is not good, may cause damage to the child’s oral mucosa, causing local breakage or trauma; 2, oral infection: pepper grinder stick because it is not a single-use items, need to be repeated many times, if not timely sterilization, may lead to secondary oral infections in children, causing stomatitis or thrush.