Root canal treatment is designed to remove infection from inside a tooth and preserve the natural tooth wherever possible. In some cases, however, inflammation or infection can remain around the tip of a root even after treatment has been completed.
When further treatment through the crown of the tooth is unsuitable or unlikely to resolve the problem, an apicoectomy may be considered. Also known as root-end surgery or apical surgery, this procedure treats the affected area through the gum and bone surrounding the root tip.
An apicoectomy can sometimes provide an alternative to extracting a tooth, but it is not appropriate in every case. Careful examination and imaging are needed to establish why the previous treatment has not succeeded and whether surgery offers a predictable way to retain the tooth.
What is an apicoectomy?
An apicoectomy is a minor surgical procedure used to treat persistent infection or inflammation around the end of a tooth root.
During the procedure, the clinician accesses the root through the gum, removes the infected tissue and takes away a small portion of the root tip. The end of the root canal is then cleaned and sealed to reduce the risk of bacteria remaining within the area.
The word “apicoectomy” can be broken down into:
- apex, meaning the tip of the tooth root; and
- ectomy, meaning surgical removal.
The procedure is therefore sometimes described as root-tip removal, although treatment normally involves more than removing the tip alone. The surrounding diseased tissue is also treated, and the end of the canal is carefully sealed.
Why might root-end surgery be needed?
A tooth may continue to cause symptoms after root canal treatment for several reasons.
These can include:
- complex or very narrow canal anatomy;
- a small branch of the canal that could not be reached during the original treatment;
- bacteria remaining close to the root tip;
- leakage around an existing crown or filling;
- a blockage inside the root canal;
- a post or restoration that makes access through the tooth difficult;
- persistent inflammation in the tissues surrounding the root;
- damage or resorption affecting the end of the root;
- a cyst-like lesion around the root tip.
Symptoms may include discomfort when biting, tenderness, swelling or a recurring spot on the gum. In other cases, the patient may have no symptoms and the problem is identified on a dental X-ray or scan.
Persistent symptoms do not automatically mean that an apicoectomy is required. The clinician must first determine the likely cause and consider whether conventional retreatment, surgery or another approach is most appropriate.
How is an apicoectomy different from root canal retreatment?
Both treatments aim to manage infection and preserve the natural tooth, but they approach the root canal system in different ways.
Root canal retreatment
During retreatment, the clinician accesses the canals through the crown of the tooth. The existing root filling is removed, the canal system is cleaned again and the tooth is resealed.
Retreatment may be appropriate when:
- the canals can be accessed safely;
- the original root filling can be removed;
- untreated canal anatomy is suspected;
- the restoration can be removed without causing excessive damage;
- the problem is likely to be resolved by cleaning the full canal system again.
Our article Re-Treatment of Failed Root Canals explains this process in more detail.
Apicoectomy or root-end surgery
During an apicoectomy, the clinician approaches the root through the gum. This provides direct access to the tissue around the root tip without necessarily removing the crown, post or existing root filling.
Root-end surgery may be considered when:
- conventional retreatment has already been attempted;
- a crown or post makes access through the tooth difficult;
- removing an existing restoration could weaken the tooth;
- the problem is confined to the end of the root;
- a blockage prevents access to the full canal;
- a sample of the tissue is needed for further examination;
- previous treatment appears satisfactory but inflammation remains.
The decision is not simply a choice between two interchangeable procedures. Each case must be assessed to identify which route is most likely to treat the underlying cause.
Is an apicoectomy an alternative to extraction?
An apicoectomy may provide one of the alternatives to tooth extraction when a previously root-treated tooth remains restorable and has enough healthy support.
Preserving the natural tooth can help maintain:
- chewing function;
- the existing bite;
- contact with neighbouring teeth;
- the natural appearance of the smile;
- the surrounding dental arch.
However, surgery is only worthwhile when the tooth has a reasonable long-term outlook.
An apicoectomy may not be appropriate when:
- the tooth has a vertical root fracture;
- too little healthy tooth structure remains;
- there is severe decay beneath the gum;
- the tooth has advanced bone loss or poor periodontal support;
- the root anatomy cannot be treated predictably;
- the tooth cannot be restored adequately;
- the risks of surgery outweigh the likely benefit.
If a tooth cannot be saved, extraction and replacement options such as a bridge, denture or dental implant may need to be discussed.
How is the need for apical surgery assessed?
A detailed assessment is essential before root-end surgery is recommended.
The clinician will normally review:
- the patient’s symptoms;
- the original root canal treatment;
- the condition of the crown or filling;
- the amount of healthy tooth remaining;
- gum and bone support;
- the position and shape of the roots;
- nearby teeth and anatomical structures;
- previous dental X-rays;
- the patient’s medical history.
The tooth is also checked for cracks, mobility, tenderness and signs of infection.
Standard dental radiographs may provide sufficient information in some cases. In more complex situations, CBCT dental scanning may be recommended.
How can CBCT scanning help?
Cone beam computed tomography, commonly called CBCT, produces three-dimensional images of the teeth, roots and surrounding structures.
A CBCT scan may help the clinician assess:
- the exact location of infection;
- the number and position of roots;
- unusual canal anatomy;
- the thickness of the surrounding bone;
- the relationship between the root and nearby structures;
- possible root damage or resorption;
- whether surgery can be carried out safely;
- whether another treatment approach would be more appropriate.
CBCT is not required for every patient. It is used when the additional three-dimensional information is likely to influence diagnosis or treatment planning.
What happens during an apicoectomy?
The precise procedure varies according to the tooth and its position, but root-end surgery commonly involves the following stages.
1. Local anaesthetic
The area is numbed using local anaesthetic. The patient should not feel sharp pain during the procedure, although pressure and movement may still be noticeable.
2. Access through the gum
A small incision is made in the gum close to the affected root. The gum tissue is gently moved aside to expose the underlying bone.
3. Access to the root tip
A small opening is created in the bone to reach the end of the root and the surrounding inflamed or infected tissue.
4. Removal of diseased tissue
The clinician removes the affected tissue from around the root. This tissue may sometimes be sent for laboratory analysis where further investigation is appropriate.
5. Removal of the root tip
A small section from the end of the root is removed. This allows the clinician to inspect the root and gain access to the end of the root canal.
6. Root-end preparation and filling
The end of the canal is cleaned and prepared using small specialist instruments. A root-end filling material is then placed to create a seal.
7. Closure of the gum
The gum is repositioned and secured with stitches. These may be dissolvable or may need to be removed at a review appointment.
The area is then left to heal. Bone can gradually reform around the treated root over time.
How long does an apicoectomy take?
The length of the appointment depends on:
- which tooth is being treated;
- the number and position of the roots;
- the complexity of the anatomy;
- the amount of inflamed tissue;
- the proximity of nearby anatomical structures;
- whether more than one root requires treatment.
Your clinician can give you a more individual estimate after examining the tooth and reviewing the relevant imaging.
Is root-end surgery painful?
An apicoectomy is normally carried out under local anaesthetic, so the area should be numb during treatment.
After the anaesthetic wears off, some discomfort is expected because the gum and surrounding tissues have undergone surgery. Patients may experience:
- soreness;
- mild to moderate swelling;
- bruising;
- tenderness when chewing;
- slight bleeding or oozing;
- temporary tightness when opening the mouth.
These symptoms should generally improve as healing progresses.
Pain that is severe, worsening or accompanied by increasing swelling should be reported to the treating clinician.
What is recovery like after an apicoectomy?
Recovery varies between patients, but the first few days usually require the most care.
During the first 24 hours
You may be advised to:
- rest and avoid strenuous activity;
- use a cold compress externally if recommended;
- avoid disturbing the surgical site;
- choose soft, cool or lukewarm foods;
- avoid very hot food and drinks until numbness has resolved;
- take recommended pain relief safely;
- avoid smoking;
- follow any instructions about mouth rinsing.
Some minor swelling or bruising can be normal.
Over the next few days
Tenderness and swelling should begin to settle. Continue to avoid hard, sharp or sticky foods near the surgical area.
Brush the rest of the mouth normally, but follow the clinician’s instructions around the surgical site. You may be given a small brush, antibacterial mouthwash or another cleaning method to use temporarily.
During the following week
A review may be arranged to assess healing and remove non-dissolving stitches.
Many patients can return to routine activities relatively quickly, although this depends on the extent of the surgery and the nature of their work.
The gum may heal within a relatively short period, while healing within the bone takes longer and is monitored over time.
What can you eat after root-end surgery?
Soft foods are usually most comfortable during the early recovery period.
Suitable choices may include:
- yoghurt;
- scrambled eggs;
- pasta;
- mashed vegetables;
- soft fish;
- porridge;
- cooled soup;
- soft rice dishes.
Avoid chewing directly over the surgical site. Hard, crunchy or sharp foods may irritate the area or catch around the stitches.
Wait until the local anaesthetic has worn off before eating to reduce the risk of biting the cheek, lip or tongue.
How should the area be cleaned?
Keeping the mouth clean supports healing, but the surgical site must be treated gently.
Follow the specific instructions given by your clinician. These may include:
- brushing the unaffected teeth as usual;
- avoiding direct brushing over the stitches initially;
- using a prescribed or recommended mouthwash;
- beginning gentle cleaning around the area when advised;
- avoiding vigorous rinsing during the early healing period.
Do not pull the lip or cheek repeatedly to inspect the stitches, as this may place tension on the wound.
Will antibiotics be needed?
Antibiotics are not required after every apicoectomy.
They may be prescribed when the clinician believes there is a particular risk of spreading infection or another clinical reason for their use. When antibiotics are provided, take them exactly as directed and complete the course unless a healthcare professional advises otherwise.
Antibiotics alone cannot seal an infected root canal or remove the cause of persistent inflammation. The surgical procedure is intended to treat the source directly.
What are the possible risks?
As with any surgical procedure, an apicoectomy has potential risks and limitations.
These may include:
- post-operative pain, swelling or bruising;
- bleeding;
- infection;
- delayed healing;
- gum recession;
- changes in the appearance of the gum;
- temporary or persistent altered sensation;
- damage to a neighbouring tooth or restoration;
- communication with a nearby sinus in some upper teeth;
- failure to resolve the original problem;
- the future need for extraction.
The position of the tooth affects the specific risks. For example, some roots lie close to nerves, sinuses or neighbouring teeth.
Your clinician will explain the relevant risks before treatment and discuss whether another option may be more appropriate.
How successful is an apicoectomy?
The likely outcome depends on several factors, including:
- the reason the original treatment did not resolve the problem;
- the quality of the existing root canal filling;
- the position and accessibility of the root;
- whether the tooth is cracked;
- the quality of the final restoration;
- the health of the gum and supporting bone;
- smoking;
- the patient’s general health;
- ongoing oral hygiene and maintenance.
No procedure can be guaranteed. A carefully selected case with a restorable tooth and a treatable root-end problem is more likely to have a favourable outcome than a tooth with extensive structural or periodontal damage.
The clinician should explain the expected prognosis for the individual tooth rather than relying on a general figure.
How do you know whether treatment has worked?
Improvement in symptoms is one sign that the area is healing, but follow-up is also important.
The clinician may monitor:
- pain or tenderness;
- swelling;
- gum healing;
- any recurring drainage;
- the stability and function of the tooth;
- changes in the bone around the root on follow-up X-rays.
Bone healing takes time, so radiographic improvement may not be immediate. Reviews may be arranged over a longer period to assess progress.
Can an apicoectomy fail?
Yes. Symptoms or infection can sometimes persist or return after surgery.
Possible reasons include:
- a crack or fracture that was not previously visible;
- untreated infection elsewhere in the root canal system;
- leakage through the crown or restoration;
- inadequate healing;
- loss of supporting bone;
- reinfection;
- structural failure of the tooth.
Further treatment depends on the cause. In some cases, monitoring or additional treatment may be possible. In others, extraction may be the most appropriate option.
When should you contact the dentist after surgery?
Contact the treating practice if you experience:
- pain that is becoming significantly worse;
- swelling that continues to increase;
- persistent or heavy bleeding;
- fever or feeling generally unwell;
- discharge or an unpleasant taste;
- numbness that does not improve as expected;
- stitches that come loose very soon after surgery;
- difficulty swallowing;
- an allergic reaction to medication;
- concern that the surgical site has opened.
Difficulty breathing or rapidly spreading swelling requires urgent medical attention.
How much does an apicoectomy cost?
The cost can vary according to:
- the tooth being treated;
- the complexity of the root anatomy;
- the imaging required;
- whether CBCT scanning is needed;
- the number of roots involved;
- the clinician providing treatment;
- the need for laboratory examination;
- follow-up care.
A consultation and diagnostic assessment are normally required before an accurate treatment plan and fee can be provided.
Our article The Cost and Process of Endodontics explains some of the factors that can influence the cost of specialist root canal care.
Questions to ask before root-end surgery
Before deciding whether to proceed, you may wish to ask:
- Why has the original root canal treatment not resolved the problem?
- Could conventional retreatment be attempted instead?
- Is there any evidence that the tooth is cracked?
- Is the tooth strong enough to restore and retain?
- What are the specific risks for this tooth?
- Will CBCT imaging be needed?
- What is the expected long-term outlook?
- What would happen without treatment?
- What are the alternatives if surgery is unsuccessful?
- How will the tooth be monitored afterwards?
The aim is to ensure that you understand the diagnosis, the available options and why surgery has been recommended.
Specialist endodontics at Spring Hill Dental
At Spring Hill Specialist Dental Centre in Tavistock, patients can be referred for assessment when symptoms or infection persist following root canal treatment.
Our specialist endodontics service includes diagnosis, root canal retreatment and root-end surgery where appropriate. Detailed imaging, including CBCT dental scanning when clinically indicated, can help identify the cause of the problem and support treatment planning.
An apicoectomy is not automatically the next step after a failed root canal. Each tooth must be assessed for restorability, structural damage and the likelihood that surgery will provide a stable, maintainable result.
Where root-end surgery offers a reasonable opportunity to preserve the natural tooth, the procedure may help avoid or delay extraction. Where the tooth cannot be saved predictably, the clinician will explain the available alternatives.
Contact Spring Hill Dental to arrange an assessment or discuss a specialist endodontic referral.
