White hard objects on the outside of the gums may be related to bad habits, or alveolar bone hyperplasia, dental calculus and other diseases. 1. Bad habits: patients usually brush their teeth incorrectly, resulting in too much food debris on the teeth, day after day, the outside of the gums may grow white hard objects. 2. Alveolar bone hyperplasia: Due to various reasons, the alveolar bone undergoes organizational changes, resulting in abnormal hyperplasia, and the outside of the gums may grow a white hard substance. 3. Dental calculus: some patients with dental calculus, dental calculus attached to the teeth after the formation of hard objects, so the outside of the gums may grow white hard objects. When the outside of the gums long white hard objects, we should go to the hospital stomatology department for examination in a timely manner, and under the guidance of the doctor to actively treat, do not delay delay the condition.