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Understanding Healthy Teeth and Gums

When you look at your mouth in the mirror, you can see hard white teeth surrounded by soft gums. What you likely can’t see is a sticky coating of bacteria and other substances on your teeth and gums. This coating, called plaque, can harm your mouth if it’s not kept under control.

Cross section of tooth in bone. Enamel is hard coating that protects surface of tooth. Dentin is middle layer. Pulp is soft inner tissue. Ligaments are tiny fibers of connective tissue that attach root to bone. Blood vessels carry nutrients to tooth. Crown is visible part of tooth with surfaces for biting and chewing. Bone in jaw provides support and stability. Root is part of tooth lodged in bone. Nerves relay signals such as pain to and from brain.

Healthy Teeth and Gums

To have good oral health, you must have healthy teeth and gums.

  • Teeth are made of hard tissue designed to break up food. Healthy teeth can be various shades of white (some staining on the teeth is normal). Teeth are set into the supporting bone of the jaw.

  • Gums are soft tissues that cover bone and part of each tooth. The color of your gums depends on your ethnicity. But, your gums should be the same color throughout your mouth.

When Plaque and Tartar Form

Even in a healthy mouth, plaque forms. If not cleared away with daily brushing and flossing, this sticky film coats the teeth, gums, and tongue.

  • As saliva and the tongue move in the mouth, some plaque is wiped off the tooth surfaces. But plaque can collect in the grooves of the teeth, between teeth, and at the gumline.

  • Plaque bacteria feed on bits of sugary and starchy foods left in your mouth after you eat. This results in acid, the main cause of tooth decay.

  • If not removed, plaque hardens into tartar (also called calculus). Tartar can spread below the gumline, where it damages the gums and bone.

Are You At Risk?

Some factors make you more likely to have problems with your teeth and gums. These include:

  • Not taking good care of your teeth and gums.

  • A low amount of saliva in the mouth, which allows plaque to collect.

  • Smoking, which makes your body less able to fight infections such as gum disease. Smoking also reduces the amount of saliva in your mouth.

  • Eating a lot of sugary and starchy foods, which causes more acid to form.

  • Frequent snacking, which lets acid form more often.

  • Crooked teeth, which can be harder to clean.

 

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