tooth decay
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Cavity
Tooth decay, also known as cavities or caries, is the breakdown of teeth due to acids produced by bacteria. The cavities may be several different colors, from yellow to black. Symptoms may include pain and difficulty eating.
You'll probably need a filling if you have a hole (cavity) in your tooth. If tooth decay has reached the soft tissue (pulp) in the middle of your tooth, you may need root canal treatment. Sometimes the affected tooth may need to be removed (extraction) .
