A set of medical conditions in which the tissues surrounding the teeth exhibit inflammation is known as periodontal disease. Bacteria present in the mouth can infect the tissues around the teeth and cause periodontal disease. Some common symptoms include bleeding of gums, halitosis, swelling of gums, deep pockets between teeth and gums, etc. Periodontal probe is a device used by dentists in order to evaluate periodontitis. A standard treatment to prevent the progression of periodontitis is the use of special instruments to clean the teeth, especially below the gum line. Periodontal disease may be prevented by regular brushing, daily flossing, regular dental check-ups, professional teeth cleaning, etc. The topics included in this book on periodontitis are of utmost significance and bound to provide incredible insights. It will serve as a valuable source of reference for graduate and post graduate students, and dentists.