01/22/2026
A tooth consists of 3 main layers. The outer layer, enamel, a middle layer, dentin and an inner layer called the pulp. The pulp chamber is where the blood vessels and nerves of your tooth reside. Smaller cavities generally stay confined to the enamel or dentin and can be filled as usual. However, when a cavity gets big enough to reach the pulp, or nerve of your tooth, it can cause the pulp to either become inflamed or infected. These teeth may require root canal therapy in order to be saved.
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