The main cause of bleeding gums is the buildup of plaque at the gum line. This will lead to a condition called gingivitis, or inflamed gums. Plaque that is not removed will harden into tartar. This will lead to increased bleeding and a more advanced form of gum and jaw bone disease known as periodontitis. 7 ways to keep the gums healthy Brush the teeth properly. Share on Pinterest Brushing the teeth twice a day with fluoride toothpaste can help keep gums healthy. ... Choose the right toothpaste. ... Floss daily. ... Rinse your mouth out with care. ... Use mouthwash. ... Get regular dental checkups. ... Stop smoking.