Root End Surgery: Apical resection is a surgical procedure to treat infections at the root end of a tooth. This procedure involves removing the infected end of the tooth root and the surrounding infected tissue. It is used as a last resort when root canal treatment fails and aims to save the tooth. The surgeon opens the gum to access the root end and cleans the infected tissue. After the procedure, the root is filled and sealed. The recovery process usually takes a few weeks, during which maintaining oral hygiene is crucial.