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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.
A dental sinus usually results from a chronic infection in longstanding necrotic dental pulp (a dead tooth). The decay is usually due to caries or trauma. Caries occur due to poor dental hygiene and regular consumption of refined sugars.