Periodontitis is a serious gum infection that damages the soft tissue and can destroy the bone that supports your teeth. It is usually caused by poor oral hygiene, leading to the formation of plaque—a sticky film of bacteria on the teeth. If not treated, periodontitis can result in tooth loss and other health issues. Symptoms of periodontitis include swollen or bleeding gums, bad breath, and loose teeth. Regular dental check-ups and good oral hygiene practices, such as brushing and flossing, are essential for preventing this condition and maintaining overall dental health.