The most common of these is a surgical apicoectomy, which is usually performed on a root canal treated tooth that has become infected or painful. An apicoectomy is a procedure in which the gum tissue near the tooth is opened to see the underlying bone and infected tissue is removed. The very end of the root tip is also removed and the root canal filling is sealed.
During apicoectomy- infection at root tip exposed
Immediately after apicoectomy
Severe infection at the root tip
Infection and root tip removed in apicoectomy procedure