If you experience bleeding gums when brushing your teeth, or your gum are swollen you may have early signs of gum disease. What causes Gum Disease? Gum disease is the build of plaque and bacteria around the gum line. Both Gingivitis and Periodontitis are a result of unhealthy gums. Can I treat Gum Disease? Use a sonic toothbrush to ensure a deep clean. Floss Daily. Use a toothpaste for gum health contains the active ingredients to reduce inflammation and prevent gums from bleeding.