You can tell that your gums are healthy by their appearance. They should be firm and pale pink. If you notice some discoloration or if they bleed easily, then you may want to visit your dentist for a checkup. It can be an early indication of gum disease, which, if left ignored, would require periodontal treatment.
Plaque is the main culprit behind gum disease. A sticky film of bacteria, otherwise known as plaque, occurs due to too much consumption of food rich in sugar and starch. These elements interact with existing bacteria in the mouth, creating plaque buildup. You can remove it by brushing your teeth regularly; however, they will recur within a day.