The Nerve on the inside of a Tooth Can Be Damaged and Die
When this occurs, it commonly becomes infected and painful. This can happen as a result of deep decay, a deep filling, a crack or previous knocks to teeth.
Root canal treatment involves cleaning and disinfecting the tunnels inside the tooth. Once the tooth settles, a seal is placed inside the tunnel. This usually takes around three visits.
After root canal treatment, the tooth may require a filling or a crown to seal the original opening used to get to the nerve and avoid reinfection.