Dental term explained

Apicoectomy

An apicoectomy is endodontic surgery that removes the tip of a root and seals the root end after accessing disease through the surrounding tissues.

It may be considered when nonsurgical retreatment cannot predictably address the cause. A useful question to ask your dentist: “Why is surgery favored over retreatment or extraction in this case?”

Updated August 20, 2026Not clinically reviewed · status

Part of Dental glossary. Related: More on Dental implant osteotomy · See Sinus augmentation · Ridge augmentation guide · Alveoloplasty explained

Plain-language definition

What apicoectomy means

An apicoectomy is endodontic surgery that removes the tip of a root and seals the root end after accessing disease through the surrounding tissues.

Why the term matters

How it changes the treatment conversation

It may be considered when nonsurgical retreatment cannot predictably address the cause.

Ask this

A question that makes the term useful

“Why is surgery favored over retreatment or extraction in this case?”

Full explanation

In depth

An apicoectomy is surgery at the tip of a tooth root: the gum is lifted, the bone over the root end accessed, the last few millimetres of root removed along with infected tissue, and a filling placed into the cut end of the canal to seal it. The apicoectomy is generally considered when a root-treated tooth has persistent disease at the apex and conventional retreatment through the crown is not feasible or has not worked. That order matters: retreatment through the tooth is usually attempted first where possible, because it addresses the whole canal system, not only its end. Modern practice uses magnification and ultrasonic instruments, and it is commonly performed by an endodontist or an oral surgeon. Where a root fracture turns out to be the underlying cause, surgery will not resolve it and that may only become apparent once the site is opened, which is why asking what happens if the lesion does not heal is worth doing before treatment.

Also called: root end surgery, apical surgery, endodontic microsurgery, root resection.

When it is considered

Situations that lead to surgery

  • Persistent disease at the root apex after root canal treatment, where retreatment is not feasible
  • A post or restoration that cannot be removed without unacceptable risk to the tooth
  • Canal anatomy that cannot be adequately treated from the crown, such as a blockage or a separated instrument
  • A need to obtain tissue for examination where a lesion requires characterization
  • Failure of a previous retreatment, where the alternative is extraction
  • Anatomical issues at the root end that cannot be resolved through the canal

The procedure

What the surgery involves

StepDetail
1. AnesthesiaLocal anesthetic, with sedation available where appropriate
2. FlapA flap is raised to expose the bone over the root end
3. AccessAccess is made through bone to the root apex
4. Root-end removalThe last few millimetres of root and the inflamed or infected tissue around it are removed
5. SealingThe cut canal end is prepared and sealed with a retrograde filling material
6. Closure and reviewThe flap is repositioned and sutured, with review and suture removal afterwards

Questions people ask

Common questions

01

Why not just retreat the root canal instead?

Retreatment through the crown is usually preferred where it is feasible, because it addresses the entire canal system instead of only the last few millimetres. Surgery is considered where retreatment is not possible or has already been attempted. For example where a post cannot be safely removed, where an instrument is separated in the canal, or where anatomy prevents adequate treatment from above.

02

How long is the recovery?

Swelling and discomfort in the days following are expected and are managed with the measures your surgeon advises, with sutures typically removed at a short review. The more important timeline is the healing of bone at the root end, which is assessed by comparing radiographs over an extended period instead of by how you feel, so the result is judged later, not at the point the discomfort settles.

03

Does an apicoectomy always work?

No, and outcomes depend on the reason the original treatment did not resolve, the tooth involved, the anatomy and the technique used. Where a root fracture is the underlying cause, surgery will not resolve it and that may only become apparent during the procedure. Ask what the plan would be if the lesion does not heal. The alternative is understood beforehand.

04

Who performs it?

Commonly an endodontist, who specializes in root canal treatment and its surgical management, or an oral and maxillofacial surgeon. Magnification and ultrasonic instruments are standard in contemporary practice. The apicoectomy is reasonable to ask how frequently the clinician performs this specific procedure, since it is a technique-sensitive operation.

05

Is it better to just extract the tooth?

That is a legitimate comparison, not a defeat, and it depends on the tooth, its restorability, the cost of surgery against extraction and replacement, and your own priorities. Extraction is cheaper immediately and starts a separate decision about replacement, which is where the eventual cost usually lands. Compare the complete pathway for each route instead of the immediate procedure.

06

Can an apicoectomy be performed on the same tooth more than once if the first attempt doesn't resolve the problem?

The apicoectomy is possible but becomes progressively less predictable, since a second attempt at the same root end faces reduced bone and root structure from the first surgery. A repeat apicoectomy is a more limited option, and the practical alternatives, accepting a guarded outcome, or extraction, are weighed more seriously if a first attempt has already failed to resolve the lesion.

07

Is an apicoectomy always done on a tooth that's already had root canal treatment, or can it be a first-line treatment?

The apicoectomy is specifically a surgical option for a tooth that has already had, or attempted, conventional root canal treatment through the crown: it is not typically a first-line treatment for a tooth that hasn't had endodontic treatment yet, since conventional root canal treatment addressing the full canal system is generally the appropriate first approach in that situation.

08

Does having an apicoectomy leave a visible scar on the outside of the face?

No: the procedure is performed entirely from inside the mouth through the gum tissue, so there is no external facial incision or visible scarring on the outside of the face; any minor scarring or gum tissue change from the procedure is confined to the inside of the mouth at the surgical site.

09

Can I return to work or normal activities the same day as an apicoectomy?

The apicoectomy depends on the extent of the surgery and whether sedation was used beyond local anesthetic. Many people can resume light activities within a day or two, though swelling and some discomfort are expected during that window, and your surgeon's specific guidance for your case, including whether you had sedation requiring an escort home, should govern your return-to-activity timeline instead of a general assumption.

10

What is a retrograde filling material and why is it used specifically at the root end during this surgery?

A retrograde filling material is a biocompatible substance placed into the cut end of the canal from the surgical side, sealing off the space bacteria could otherwise use to re-enter: it is called 'retrograde' because it seals the canal from the root end backward, not from the crown downward, which is the direction a conventional root canal filling seals from.

11

Can an apicoectomy be avoided if I catch the problem early enough with regular follow-up radiographs after root canal treatment?

Not entirely, since some causes of persistent apical disease (a missed canal, a coronal leak, a fracture) can develop or be identified regardless of follow-up diligence, but consistent follow-up does mean any developing problem is caught and addressed earlier, when conventional retreatment through the crown is more likely to still be a viable option than surgery.

12

Does dental insurance typically cover apicoectomy the same way it covers a standard root canal?

Coverage varies by plan: apicoectomy is usually classified as oral surgery or a major endodontic service with its own specific rules, which can differ from how a standard non-surgical root canal is categorized. Confirming with a pretreatment estimate specifically for the surgical procedure code is more reliable than assuming it follows the same coverage rules as conventional root canal treatment.

Related glossary terms

Sources

  1. What Is a Root Canal?American Association of EndodontistsAccessed 2026-08-17