Healthy gums are firm and pale pink and fit snugly around teeth. Signs and symptoms of periodontitis can include:
- Swollen or puffy gums
- Bright red, dusky red or purplish gums
- Gums that feel tender when touched
- Gums that bleed easily
- Pink-tinged toothbrush after brushing
- Spitting out blood when brushing or flossing your teeth
- Bad breath
- Pus between your teeth and gums
- Loose teeth or loss of teeth
- Painful chewing
- New spaces developing between your teeth
- Gums that pull away from your teeth (recede), making your teeth look longer than normal
- A change in the way your teeth fit together when you bite
Periodontitis can cause tooth loss. The bacteria responsible for periodontitis can enter your bloodstream through gum tissue, possibly affecting other parts of your body. For example, periodontitis is linked with respiratory disease, rheumatoid arthritis, coronary artery disease and problems controlling blood sugar in diabetes.
The most common cause of gingivitis is poor oral hygiene that encourages plaque to form on teeth, causing inflammation of the surrounding gum tissues. Here's how plaque can lead to gingivitis:
In most cases, the development of periodontitis starts with plaque — a sticky film composed mainly of bacteria. Ongoing gum inflammation can cause periodontitis, eventually causing pockets to develop between your gums and teeth that fill with plaque, tartar and bacteria. In time, these pockets become deeper, filling with more bacteria. If not treated, these deep infections cause a loss of tissue and bone, and ultimately you may lose one or more teeth. Also, ongoing chronic inflammation can put a strain on your immune system.
The best way to prevent periodontitis is to follow a program of good oral hygiene, one that you begin early and practice consistently throughout life.
- Good oral hygiene. That means brushing your teeth for two minutes at least twice daily — in the morning and before going to bed — and flossing at least once a day. Flossing before you brush allows you to clean away the loosened food particles and bacteria. Good oral hygiene prevents the development of an environment around your teeth that is favorable to specific bacteria that cause periodontal disease.
- Regular dental visits. See your dentist or dental hygienist regularly for cleanings, usually every six to 12 months. If you have risk factors that increase your chance of developing periodontitis — such as having dry mouth, taking certain medications or smoking — you may need professional cleaning more often.
Factors that can increase your risk of periodontitis include:
- Gingivitis
- Poor oral health habits
- Smoking or chewing tobacco
- Hormonal changes, such as those related to pregnancy or menopause
- Recreational drug use, such as smoking marijuana or vaping
- Obesity
- Inadequate nutrition, including vitamin C deficiency
- Genetics
- Certain medications that cause dry mouth or gum changes
- Conditions that cause decreased immunity, such as leukemia, HIV/AIDS and cancer treatment
- Certain diseases, such as diabetes, rheumatoid arthritis and Crohn's disease




