What is the primary purpose of an apicectomy?

The primary purpose of an apicectomy is to remove the apex, which is the tip of a tooth's root, particularly when it has become infected or damaged. This procedure is typically undertaken when a conventional root canal treatment has failed, allowing for the targeted removal of infected tissue and the prevention of further complications. By addressing the issue at the root apex, the procedure helps to eliminate chronic infections and can often save the tooth from extraction, maintaining the integrity of the patient's dental structure.

In contrast, the other options pertain to different dental procedures or processes that don't align with the specific goals of an apicectomy. The removal of a decayed tooth, for instance, points towards extraction rather than targeted surgery on the root surface. Elevating a tooth for better visibility refers more to preliminary steps in surgical procedures rather than focusing on infection or damage. Lastly, providing cosmetic enhancements to teeth is not related to the apicectomy's objective, which is strictly a therapeutic intervention for dental health rather than aesthetic improvement.