Finding out your tooth still hurts after a root canal can feel discouraging, especially if you thought the problem was already solved. A root canal is often successful at saving an infected tooth, though the infection can return months or even years later, even when the original treatment seemed to work.
If that sounds like what you are dealing with, this is a treatable situation, not a sign that something went wrong on your part. Understanding the cause is the first step toward fixing it.
What Is an Apicoectomy?
An apicoectomy is a minor surgical procedure that treats infection at the very tip of a tooth root, a spot a standard root canal cannot always fully reach. The area is fully numbed beforehand, and you remain awake throughout, much like other routine dental work.
A dentist removes the infected tissue and a small portion of the root tip, then seals the area to prevent the infection from returning. Unlike a root canal, which works through the top of the tooth, this approach addresses the problem from the gum and bone around the root. Appointment length can vary depending on the tooth and its location.
Signs You May Need an Apicoectomy
A tooth that has already undergone treatment can still develop new problems later, sometimes after the healing period has long passed. Mild soreness right after treatment is normal and usually fades within a week or two. The signs below are different and call for closer attention.
Persistent Tooth Pain or Tenderness
Discomfort that lingers or returns after the expected healing time is one of the more common signs. Some patients feel it when chewing, while others notice a dull ache that rarely fades completely.
Swelling or a Recurring Gum Bump
A bump near the same tooth that recurs, sometimes draining before it returns, often signals infection beneath the surface. It is easy to dismiss at first, especially since it can temporarily shrink or disappear.
Infection Around the Root Tip
Not every infection causes pain, which makes it difficult to notice without a professional exam. It can remain undetected for a long time before an endodontist finds it during a checkup. This is one reason regular exams still matter, even when a tooth feels fine.
An Abnormality Seen on an X-Ray
An X-ray can detect a shadow near the root before any symptoms develop, giving an early look at a problem before it causes pain or swelling. This is often the earliest sign of a returning infection, well before a patient notices anything themselves.
How Endodontists Diagnose a Failed Root Canal
If you notice pain, swelling, or any of the signs above, the next step is a closer look, not a decision about surgery. An endodontist starts with new X-rays, checks how the tooth responds to temperature and pressure, and compares the results against past treatment records.
Treatment then follows one of two paths. A failed root canal can sometimes be fixed through retreatment. Other times, an apicoectomy (endodontic surgery) is the better option. Your endodontist will explain which one fits your tooth.
Can an Apicoectomy Save the Tooth
In many cases, yes, and that is the point of the procedure. Losing a tooth means replacing it later with an implant or bridge, while an apicoectomy gives your natural tooth another chance.
Success is not guaranteed in every case. If the infection recurs, extraction may eventually become the more practical option. Even so, saving the natural tooth is usually worth attempting before moving to extraction.
When Should You See an Endodontist
Ongoing pain, swelling, or a tooth that does not feel right after treatment are reasons to have it evaluated. Waiting rarely resolves a returning infection, and addressing it earlier generally makes treatment more straightforward. Almond Dental evaluates these situations closely and offers honest guidance on whether an apicoectomy, retreatment, or another approach is best for your tooth.