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In brief, here's what having root canal treatment is all about ...
During the procedure the dentist removes problematic nerve tissue from within the tooth, as well as any contaminates (bacteria, tissue breakdown products, etc...) that have accumulated there.
We should explain:
Although it's common to call the tissue inside a tooth its "nerve," more precisely it should be referred to as its "pulp tissue."
While pulp tissue does contain nerve fibers, it's also composed of arteries, veins, lymph vessels, and connective tissue.
On our pages: Nerve = Nerve Tissue = Pulp Tissue
To complete the tooth's root canal procedure, the space inside that's been cleansed is filled in and sealed off using a pliable rubber compound.
The tissue and debris inside the tooth that were once the source of its problems have now been replaced with an inert, biocompatible material.
The tooth can once again function as a tooth, without causing discomfort or insult to surrounding tissues.
... and that's pretty much what root canal treatment is all about.