Root canal therapy is the last possible treatment method to restore a severely decayed or infected tooth. It is the process of removing the decayed pulp from the tooth's root canal cavity to save the tooth from being extracted. Though the tooth loses its nourishment and sensitivity after the procedure, it can be retained with the help of a dental crown placed over it.
What causes a root canal infection?
The most significant cause of a root canal infection is the presence of cavities. When cavities aren't treated and disinfected during the early stages, the decay will spread to the inner layers of the tooth and reach the root canal cavity. The microbes from the decayed tissues can infect the dental pulp, thereby giving rise to a root canal infection. Sometimes, cracked or broken teeth that aren't restored can allow the bacteria to enter the root canal. Gum diseases are also known to give rise to the infection.