Although many discolored teeth cause no pain, when a tooth starts to appear dark, it is an indication that a root canal is necessary.
When there is pain, it is a sign of dental decay which has caused pulp tissue to die, creating toxins and beginning an infectious process putting pressure on the root, eventually an abscess forms which causes the pain.
During root canal treatment, an opening is created through the top of the tooth to gain access to the pulp.
The decayed tissue and infectious debris is cleaned out of the canals using small files.
When the canals are clean and free of bacteria, they are sealed with a filling material and usually the abscess will heal.
A temporary filling is used to close the opening in the tooth until the final restoration is put in place.
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