Gum disease is caused by plaque and may result in tooth loss without proper treatment. Symptoms and signs of gum disease (gingivitis or periodontal disease) include receding gums, bad breath and pocket formation between the teeth and gums. Treatment depends upon the stage of the gum disease, how you responded to earlier treatments, and your overall health.
When you lose a tooth, the nearby teeth may tilt or drift into the empty space. The teeth in the other jaw may also shift up or down toward the space. This can affect your bite and place more stress on your teeth and jaws. You may find it harder to clean teeth that have shifted, which can lead to tooth decay and gum disease. That is why it is important to replace missing teeth.