Root Canal Treatment:
In the situation that a tooth is considered so threatened (because of decay, cracking, etc.) that future infection is considered likely or inevitable, a pulpectomy, removal of the pulp tissue, is advisable to prevent such infection. Usually, some inflammation and/or infection is already present within or below the tooth. To cure the infection and save the tooth, the dentist drills into the pulp chamber and removes the infected pulp and then drills the nerve out of the root canal(s) with long needle-shaped drills. After this is done, the dentist fills each of the root canals and the chamber with an inert material and seals up the opening. This procedure is known as root canal therapy. With the removal of nerves and blood supply from the tooth, it is best that the tooth be fitted with a crown which increases the prognosis of the tooth by six times.
The standard filling material is gutta-percha, a natural thermoplastic polymer of isoprene, which is melted and injected to fill the root canal passage(s). Alternatively, needle-shaped pieces of hard gutta-percha may be inserted into each root canal and then melted with a hot needle. Barium is added to the isoprene so the material will be opaque to X-rays, allowing verification afterwards that the passages have been properly completely filled in, without voids.
The standard filling material is gutta-percha, a natural thermoplastic polymer of isoprene, which is melted and injected to fill the root canal passage(s). Alternatively, needle-shaped pieces of hard gutta-percha may be inserted into each root canal and then melted with a hot needle. Barium is added to the isoprene so the material will be opaque to X-rays, allowing verification afterwards that the passages have been properly completely filled in, without voids.
For some patients, root canal therapy is one of the most feared dental procedures, perhaps because of a painful abscess that necessitated the root canal procedure. However, dental professionals assert that modern root canal treatment is relatively painless because the pain can be controlled with a local anaesthetic during the procedure and pain control medication can be used before and/or after treatment.
My comment: It's absofuckinglutely painful.
~Cheers!