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Yes and no. A healthy pulp is essential for a tooth to develop, but once it is fully grown (in terms of its root) this living tissue is not so important. In other words, a dead, pulpless tooth (called ânon-vitalâ by dentists) can be kept in the mouth, but it will require treatment (see below). What Causes The Problem? The two main causes, by far, are dental decay and trauma. When decay (which is full of bacteria) gets near to the ânerveâ (pulp), and is not treated in time, the nerve will die off.
When a tooth is exposed to acid frequently -- for example, if you eat or drink often, especially foods or drinks containing sugar and starches -- the repeated cycles of acid attacks cause the enamel to continue to lose minerals. A white spot may appear where minerals have been lost. This is a sign of early decay.