Apical resection (apicoectomy) is surgery on a tooth that has already had root canal treatment. The surgeon reaches the root tip through the gum, removes the infected tissue and the end of the root, and seals the canal, aiming to keep the natural tooth. It is decided after an examination and 3D imaging; retreatment and extraction remain alternatives.
Apical resection (also called apicoectomy, apical surgery or root-end surgery) is endodontic surgery on a tooth that has already had root canal treatment. The surgeon reaches the tip of the root through the gum, removes the infected tissue and the end of the root, then seals the canal. It is suggested when an infection persists or returns at the root tip despite a root canal, as an attempt to keep the tooth rather than extract it. The decision follows a clinical examination and 3D imaging, never a description alone.
If a dentist has told you that a tooth with a root canal is still infected, this guide explains what the surgery involves, when it is considered, what healing looks like and which alternatives to discuss. It is written for patients weighing their options from home as well as those thinking of a first opinion in Istanbul.
What is apical resection?
A root canal treatment (endodontic treatment) removes the inflamed or infected pulp inside the tooth, cleans the canals and seals them. It is done through the crown of the tooth. In some cases, bacteria remain or come back at the tip of the root, the apex, and inflammation develops in the bone around it. On an X-ray this sometimes appears as a dark area, called a periapical lesion, even when there is no pain at all.
Apical surgery changes the route of access. Instead of going back in through the crown, the surgeon approaches the tip of the root through the gum and the bone. Dr. Türker Clinic lists apical resection among the oral and maxillofacial surgery treatments of Assoc. Prof. Dr. Türker Yücesoy: the surgical cleaning of infected tissue at the root tip when root canal treatment has not healed, in order to keep the natural tooth and avoid extraction.
When the dark area is large, the diagnosis may also point to a cyst. The guide on dental cysts and jaw tumors explains how these lesions are investigated and treated.
When is apical resection suggested?
Apical resection is considered when three things come together: a lasting infection or lesion at the tip of a tooth that has already had a root canal, a tooth that is worth keeping, and a surgical route judged more suitable than another treatment through the crown.
Several signs can lead you to ask for an opinion
- persistent pain, or pain that returns, on a root-treated tooth, especially when chewing;
- swelling of the gum, an abscess, or a small bump that drains pus (a fistula);
- a bad taste that lingers near the tooth;
- a dark area at the tip of the root found on an X-ray, even without symptoms.
These signs are not enough for a diagnosis. A root fracture, a gum problem or another cause can look similar, and only an examination and imaging settle it. To judge the future of a root-treated tooth that is broken or fragile, see also the guide on crown, veneer or implant.
Four options for a root-treated tooth that stays infected
| Option | Principle | May be discussed when | Main limit |
|---|---|---|---|
| Monitoring | Clinical and X-ray checks, no immediate procedure | No symptoms and the surgeon judges the situation stable | The infection can progress, so follow-up must be regular |
| Root canal retreatment | Redoing the treatment through the crown of the tooth | The canals are accessible and the restoration allows a repeat | May mean opening or removing a crown or post; does not solve every case |
| Apical resection | Surgical access to the root tip | Retreatment is impossible or insufficient and the tooth can be kept | Surgery; healing must be checked; pointless if the tooth cannot be kept |
| Extraction, then replacement | Removing the tooth, then an implant, bridge or other solution | The tooth cannot be kept or the outlook is poor | Irreversible; the replacement has to be planned |
The procedure, step by step
- Assessment. It combines your medical and dental history (date of the root canal, symptoms), an examination of the tooth and gum, a search for a fracture, X-rays and 3D imaging. The CBCT shows the root, the extent of the lesion and the position of neighboring structures: the maxillary sinus for some upper teeth, the nerve canal for some lower teeth. At Dr. Türker Clinic, planning relies on CBCT and clinical examination; the guide on CBCT and 3D planning explains what this imaging adds.
- Choice of anesthesia. This is agreed with the team before the procedure. The guide on anesthesia and sedation, written about implants, describes the main types of anesthesia and the questions to ask.
- Access. The surgeon makes an incision in the gum, lifts it away and, if necessary, opens the bone to reach the tip of the root.
- Cleaning. The infected tissue around the apex is removed, together with the end of the root.
- Sealing. The end of the canal is filled with a biocompatible material to limit the passage of bacteria.
- Closing. The gum is put back in place and stitched. A follow-up X-ray may be taken.
- Instructions and follow-up. The team gives you a prescription and written instructions, and schedules the postoperative check-up.
The length of the procedure and the timeline depend on the tooth, the number of roots and the lesion. They are set after the examination, not before.
Healing: what to expect
Two kinds of healing follow one another: the gum, which you can see within the first days, and the bone, which is silent and slower. Feeling well therefore does not yet tell you whether the bone is rebuilding.
- The first days. Swelling, bruising, tenderness or light bleeding may occur. Follow only the prescription and your team’s instructions on hygiene, food, physical effort and smoking. Smoking and poorly controlled diabetes can slow healing in general, so mention them before the procedure.
- The following months. The bone rebuilds slowly. The surgeon checks the tooth and the gum, then compares X-rays to see whether the dark area is shrinking. These checks often continue for several months. The schedule is set case by case, with no universal timeline and no promise.
- Sports, flights and long journeys. Before resuming them, ask for personalized written instructions. No timeline read on a forum replaces your team’s advice.
Which warning signs matter?
Feeling generally unwell or getting worse, swelling that spreads quickly, difficulty breathing or swallowing, or bleeding you cannot control needs urgent assessment: contact your local emergency services.
Fever, unusual discharge, pain that keeps growing, or an unpleasant taste or smell that does not go away should be reported to the team promptly. These signs do not prove a failure on their own: an examination and imaging are needed. If you are still in Istanbul, see what to do in a dental emergency. If you have already gone home, the guide on a dental problem after treatment in Turkey explains whom to contact.
Limits, risks and when to postpone
Possible risks
Pain, swelling, bruising (hematoma), bleeding and infection are possible. Opening the gum can leave a scar or a recession of the gum around the tooth, and the tooth can stay sensitive for a while. Depending on the tooth, the root lies close to the maxillary sinus or to the lower jaw nerve. Numbness, temporary or lasting, and a communication with the sinus are known complications, which is why the CBCT matters.
Healing can also remain incomplete, or the lesion can come back, in which case the tooth may have to be extracted. No general success rate predicts your case. Ask which risks apply to you, given your tooth and your health.
When surgery cannot keep the tooth
Apical resection treats the infection at the end of the root, not the weakness of the tooth. It is of little or no use in these situations
- a fracture of the root, sometimes discovered during the procedure;
- major destruction of the tooth or of its support (bone, gum);
- access that is too difficult, or a root too close to a sensitive structure;
- a tooth that no restoration could reasonably protect.
When to postpone
- an acute infection, with fever or marked swelling: it is treated first, before any planned surgery;
- general health that is not under control, or treatments you need to mention (blood thinners, for example): never stop a prescribed treatment on your own, because coordination is done with your physician;
- a travel schedule with no room for the postoperative check-up: it is better to adjust the trip than the care.
Alternatives to apical resection
Root canal retreatment is often examined first when it is possible, because it goes through the crown of the tooth. Monitoring can be discussed for a lesion without symptoms. Then comes extraction, followed by a replacement: the guide on implant or bridge compares these solutions.
Extraction is irreversible for the tooth. Before agreeing to it, ask whether endodontic or surgical treatment could keep the tooth with a reasonable outlook. A second opinion is particularly useful for a tooth that does not hurt and that you have been advised to extract.
Checklist before agreeing to an apical resection
- [ ] Which tooth is involved, and which imaging (X-ray, CBCT) is the diagnosis based on?
- [ ] Has a root fracture been looked for?
- [ ] Was root canal retreatment through the crown considered, and why was it not chosen?
- [ ] Can the tooth be kept (bone, gum, a possible restoration)?
- [ ] Have the neighboring structures (sinus, nerve) been examined on the 3D imaging?
- [ ] Which type of anesthesia is planned, and who provides it?
- [ ] How and when will healing be checked, and with which imaging?
- [ ] What happens if the lesion does not heal?
- [ ] Does the quote separate the procedure, the imaging and the follow-up visits?
- [ ] Who follows the tooth after you go home, and whom do you write to if there is a problem?
A root-treated tooth in Istanbul: preparing a first opinion
This page describes surgery on the tip of the root, not root canal treatment itself. For a root-treated tooth that causes problems, the right question is not only “where to get treated” but “which option is justified for this tooth”: monitoring, root canal retreatment, apical resection or extraction.
To make a first opinion useful, gather
- a recent panoramic X-ray or CBCT, and the older X-rays of the tooth if you have them;
- the date and nature of the care already done (root canal, crown, retreatment);
- your symptoms and how they have changed;
- your medical history and current treatments.
A clinic coordinator can help with organization, translation and the stay. The timeline is set only after an examination, and it must leave room for the healing check.
Next step
If your root-treated tooth stays painful, swollen or infected, you can send these items to Dr. Türker Clinic on WhatsApp at +90 531 818 02 87 or through the contact form. Consultations are held in Turkish, English and French; for current opening hours, see the contact page. This guidance confirms neither that you need an apical resection nor that the tooth can be kept: the decision requires a clinical examination and imaging.
If you have a fever, marked swelling or pain that is getting worse, do not wait: see a dentist or an emergency service near you promptly. In other cases, take the time to ask your questions before deciding.
Sources
Institutional references for further reading. They do not replace the surgeon’s opinion
- European Society of Endodontology (ESE): quality guidelines for endodontic treatment.
- American Association of Endodontists (AAE): patient information on root canal retreatment and endodontic surgery.
Frequently asked questions
What is the difference between a root canal and an apical resection (apicoectomy)?
A root canal cleans and seals the canals from inside the tooth, through the crown. An apical resection, also called apicoectomy, is surgery through the gum, and sometimes the bone, that reaches the root tip when infection persists or returns after a root canal. Examination and imaging decide which one fits.
When is endodontic surgery suggested after a root canal?
When an infection or a lesion persists or comes back at the root tip, the tooth looks worth keeping, and retreatment through the crown is not possible or not enough. Symptoms alone cannot settle it: the clinical examination and imaging, including CBCT, decide.
Does apical surgery hurt?
It is done with anesthesia, and the type is agreed with the team beforehand. Afterward, pain, swelling and bruising are possible and vary with the tooth and the patient. The team should explain the planned pain relief and the symptoms to report, and give you written aftercare instructions.
How long does healing take after an apical resection?
The gum heals first. The bone rebuilds more slowly, and its recovery is judged on follow-up visits and X-rays, often over several months. No timeline fits everyone: the surgeon gives a clinical estimate for your tooth, without any promise.
What are the alternatives to apical resection?
Depending on the case: clinical and X-ray monitoring, root canal retreatment through the crown, or extraction followed by an implant, a bridge or another solution. Each option has limits and risks, so ask why the one proposed is preferred to the others.
Can an apical resection fail?
Yes. Healing can remain incomplete or the lesion can come back. No reliable percentage can be given without examining your tooth. If that happens, extraction followed by a replacement may have to be discussed.
Can I have an apical resection in Istanbul as a visitor?
Dr. Türker Clinic lists apical resection among its oral and maxillofacial surgery treatments in Istanbul. Depending on the examination, another option may come first. Send a recent panoramic X-ray or CBCT, the tooth's history and your medical background; the plan is set after examination, and the trip should leave room for follow-up checks.
This guide informs; it does not replace a consultation or an individual diagnosis. Every case needs a clinical examination and 3D imaging.
