Good Oral Hygiene is Part of a Healthy Lifestyle It’s easy to keep your teeth and gums in good health. A simple routine of cleaning your teeth daily, establishing good eating habits and having regular dental visits can help prevent tooth decay, gingivitis, and periodontal disease (attachment loss around the tooth). What causes tooth decay and periodontal disease? Your teeth are covered with a sticky film of bacteria called plaque. Following a meal or snack,