Apical resection is the surgical removal of the inflamed area at the root tip of the tooth. It is applied when root canal treatment alone is not sufficient to remove the inflammation. It prevents the increase of inflammation and bone destruction. Apical resection is an operation that can be applied to all teeth. If the tooth root will remain too short after the procedure or in cases where the operation may damage the nerve in the lower jaw, it is more appropriate to extract the tooth.