It is a treatment method applied in case of a new infection in the root canal of a previously treated tooth.
Dr. Dt. Ennur Ecem Aydın
Written by DentAkademi Editorial Team
Medically reviewed by Dr. Dt. Ennur Ecem Aydın
Last updated:
🔑 Key Takeaways
  • Root canal treatment removes infected or inflamed pulp from inside a tooth, eliminates the pain caused by the infection, and preserves the natural tooth structure so it does not need to be extracted.
  • The procedure itself is not painful. It is performed under local anaesthesia. The pain that patients associate with root canal treatment is the infection before treatment, not the procedure.
  • Most root canal treatments are completed in one to two appointments of around 60 to 90 minutes each, depending on the complexity of the root system.
  • A crown is almost always recommended after root canal treatment on a back tooth. Without it, the treated tooth is significantly more prone to fracture.
  • A successfully treated and properly restored tooth can last for the rest of a patient's life with normal care.
  • At DentAkademi, root canal treatment uses rotary endodontic instruments and CBCT imaging for complex cases, with same-session treatment possible for straightforward cases.

Root canal treatment saves a tooth that would otherwise need to be extracted. When the soft tissue inside a tooth becomes infected or irreversibly inflamed, the infection cannot heal on its own. Root canal treatment removes that tissue, clears the infection, seals the space against re-entry, and restores the tooth to full function.

Most patients are nervous about the procedure before they have it. Most patients are surprised by how manageable it is once it's done. The reputation that root canal treatment has for being painful comes from the infection that makes treatment necessary, not from the procedure itself. Under local anaesthesia, the tooth is fully numb throughout.

A root canal-treated tooth, properly restored with a crown or filling afterwards, can last decades. In many cases, for the rest of the patient's life. The alternative, extraction followed by an implant or bridge, is typically more expensive, more invasive, and takes longer.

What Is Root Canal Treatment?

Inside every tooth, beneath the hard enamel and dentine, is a soft tissue called the pulp. The pulp contains nerves, blood vessels, and connective tissue. It is what made the tooth alive during its development, but a fully developed tooth can function without it.

When the pulp becomes infected or irreversibly inflamed, it cannot recover on its own. The infection can spread through the root tip into the surrounding bone, causing an abscess. Root canal treatment removes the affected pulp, cleans and disinfects the entire root canal system, and seals it with a biocompatible material to prevent bacteria from re-entering. The tooth remains in place, in the jaw, performing its normal function.

ℹ️ Root canal vs extraction: what is the difference?

Root canal treatment saves the natural tooth. Extraction removes it. A natural tooth, even without its pulp, provides better biting function, preserves the surrounding bone, and avoids the cost and time of implant or bridge treatment. Extraction is considered when the tooth cannot be saved, not as a first choice when saving it is possible.

Does Root Canal Treatment Hurt?

This is the question almost every patient asks before treatment. The honest answer is: the procedure itself should not hurt. Root canal treatment is carried out under local anaesthesia that numbs the tooth and the surrounding tissue completely. Most patients report that the experience feels similar to having a filling, some pressure, some vibration, but not pain.

What people remember as painful when they think of root canal treatment is almost always the toothache they had before seeing the dentist, the infection and inflammation building inside the tooth. Once the anaesthetic takes effect and the dentist begins working, the source of that pain is being removed, not continued.

If at any point during the procedure you feel more than pressure or mild discomfort, tell your dentist immediately. Additional anaesthesia can be given. This does happen occasionally, particularly when an abscess is present and the tissue is very inflamed, but it is manageable.

When Is Root Canal Treatment Needed?

Root canal treatment is needed when the pulp inside a tooth has become infected or irreversibly damaged. This can happen through deep decay that has reached the pulp chamber, a crack or fracture that allows bacteria to enter, trauma to a tooth even without visible damage, or repeated dental work on the same tooth over many years.

In some cases, a dying or dead pulp causes very little pain initially. This is why a professional evaluation is important rather than waiting for symptoms to worsen. The following signs suggest the pulp may be affected:

Symptom or condition What it indicates Why treatment is needed
Persistent or spontaneous tooth pain Infection or inflammation inside the pulp Removes the source of pain and prevents the infection spreading to the bone
Lingering sensitivity to heat or cold Irreversible inflammation of the pulp tissue Removing the affected pulp stops the sensitivity
Gum swelling or abscess Infection has spread to the root tip Clears the infection and allows the surrounding tissue to heal
Tooth darkening or discolouration The pulp tissue has died Prevents further structural weakening and ongoing silent infection
Cracked or fractured tooth Bacteria can enter the pulp through the crack Sealing the tooth stops bacterial access and protects the structure
Deep decay reaching the pulp Bacteria have invaded the nerve chamber Cleaning and sealing the canals avoids the need for extraction
Pain when biting or chewing Inflammation of the pulp or surrounding ligament Treatment stabilises the tooth and resolves the discomfort
Trauma without visible damage The pulp may be injured even if the tooth looks intact Prevents a delayed infection or abscess developing later

Is Root Canal Treatment Right for Your Tooth?

✅ Root canal treatment is appropriate when:

  • The pulp is infected or irreversibly inflamed
  • An abscess has formed at the root tip
  • The tooth has sufficient remaining structure to be restored
  • The surrounding bone and root structure are adequate to support long-term retention
  • The patient is committed to having the tooth properly restored with a crown or filling after treatment

❌ Extraction may be the more appropriate option when:

  • The tooth is so structurally damaged it cannot support a restoration
  • Severe bone loss around the tooth makes long-term retention unlikely
  • The root is fractured vertically through its length
  • The tooth cannot be accessed or treated due to calcified or severely curved canals
⚠️ The crown matters as much as the root canal

A root canal without a properly placed crown on a back tooth is an incomplete treatment. Root-treated back teeth lose moisture from their dentine over time and become more brittle. Without a crown providing full coverage, they are significantly more likely to fracture. The investment in the crown is what protects the investment in the root canal treatment.

Toothache that won't go away, or sensitivity that has been getting worse? Contact us to arrange an assessment. Early treatment is simpler and more comfortable than waiting for an abscess to develop.

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Clinical Note

Spec. Dt. Sevcan KOÇ CAN, Endodontics Specialist

"The patients who come to me in the most discomfort are almost always the ones who waited. They noticed the sensitivity months ago, it went away for a while, and then came back as something worse. That pattern, sensitivity that seems to settle and then returns as a dull ache or a sharp pain on biting, is a classic sign that the pulp is in trouble.

What I try to communicate is this: when we treat a tooth early, before an abscess has formed, the procedure is simpler, the recovery is faster, and the prognosis is better. When we treat an established abscess, we are dealing with more infection, more inflamed tissue, and sometimes a more complex canal system to clean. All of that is still manageable, but it is harder for the patient and harder for the clinician.

The fear of root canal treatment is real, and I understand it. What I tell patients before we start is that they will feel the needle for the anaesthetic, and then they will feel pressure and movement during the procedure, but not pain. In the vast majority of cases, that is exactly what happens. The patients who are most relieved afterwards are usually the ones who were most anxious beforehand."

Spec. Dt. Sevcan KOÇ CAN, Endodontics Specialist, DentAkademi

The Root Canal Procedure: Step by Step

Root canal treatment follows a structured sequence. Most straightforward cases are completed in a single appointment of 60 to 90 minutes. More complex cases, involving teeth with multiple or curved canals, may be spread across two appointments.

1

Examination and Diagnosis

The dentist assesses the tooth with X-rays to evaluate the root structure, the extent of infection or inflammation, and the condition of the surrounding bone. The tooth is also tested for sensitivity to confirm the state of the pulp. For complex cases, particularly those with multiple canals or previous treatment, CBCT (3D cone beam CT) imaging may be used to map the root anatomy before treatment begins. This assessment confirms whether root canal treatment is appropriate and how the procedure should be approached.

2

Anaesthesia and Isolation

Local anaesthesia is administered to numb the tooth and the surrounding tissue completely. Once the area is fully numb, a thin rubber sheet called a rubber dam is placed around the tooth. The rubber dam keeps the working area dry, prevents saliva from contaminating the canals during treatment, and protects the rest of the mouth. Most patients find that once the anaesthetic has taken effect, any apprehension about the procedure reduces significantly.

3

Accessing and Removing the Pulp

A small opening is made in the top of the tooth to reach the pulp chamber. The infected or inflamed pulp tissue, including the nerves and blood vessels, is removed using fine instruments. If an abscess has formed at the root tip, it is also drained at this stage to relieve pressure and begin the healing process. This is the step that removes the source of the pain, which is why most patients feel significantly better immediately after treatment even before the anaesthetic wears off.

4

Cleaning and Shaping the Canals

The root canals, the narrow channels running through the roots of the tooth, are cleaned and shaped using fine rotary instruments. This removes remaining infected tissue and prepares the canal walls for sealing. The canals are also flushed with a disinfecting solution to eliminate bacteria from areas the instruments cannot fully reach. This irrigation step is important for ensuring the infection is thoroughly cleared before the canals are sealed.

5

Filling and Sealing the Canals

Once the canals are clean and dry, they are filled with a biocompatible material called gutta-percha, a rubber-like substance that seals the canal space and prevents bacteria from re-entering. A dental sealer is used alongside to ensure a thorough seal throughout the canal. A temporary filling closes the opening in the tooth until the permanent restoration is placed.

6

Permanent Restoration

The final step is placing a permanent restoration over the treated tooth. For back teeth, a crown is almost always recommended, root-treated teeth lose some moisture from their dentine over time and become more brittle, making them vulnerable to fracture without full coverage. For front teeth with sufficient remaining structure, a filling may be adequate. Your dentist will advise on the most appropriate restoration for your case. The permanent restoration is typically placed at a separate appointment once the treated tooth has been confirmed to be healing well.

Your Root Canal Treatment at DentAkademi: What to Expect

For international patients visiting Istanbul, root canal treatment fits into the overall dental visit in a straightforward way. A single-appointment case takes 60 to 90 minutes and can be done the same day as the examination in many cases. A two-appointment case requires 2 to 3 days in Istanbul.

Scenario Appointment structure Time in Istanbul
Single-rooted tooth (simple case) Examination + root canal treatment in one appointment, 60–90 minutes Can be completed in a single day if the tooth does not require a crown at the same visit
Multi-rooted tooth (molar) Two appointments: cleaning and shaping on day 1, sealing on day 2 2 to 3 days in Istanbul
Root canal + crown (same trip) Root canal first, crown preparation and temporary on day 2, permanent crown on day 5–7 after lab fabrication 5 to 7 days in Istanbul as part of a broader dental plan
Retreatment (previous root canal failing) CBCT assessment first, treatment planned across 2 appointments depending on complexity 3 to 5 days, confirmed after assessment
💡 Combining with other treatment

Many international patients who need root canal treatment also need other dental work done in the same visit. Root canal treatment can be scheduled early in the trip, followed by crown placement, smile makeover work, or implant consultations at the same visit. Your coordinator maps out a combined timeline before travel is booked.

Clinical Note

On Treatment Timing and Patient Anxiety

"I want to address something I see quite often: patients who have been putting off a root canal for months or even years because of anxiety. By the time they come in, what could have been a straightforward single-session procedure has become a more complex case with an established infection and sometimes the beginnings of bone loss around the root tip.

I never tell a patient they were wrong to be anxious. But I do tell them that the procedure they were afraid of is, in most cases, more manageable than they imagined. And the longer the infection is left untreated, the more the surrounding bone and tissue are affected, which changes what we can do and how long recovery takes.

For patients who are particularly anxious, we can offer IV sedation alongside the local anaesthesia. You remain conscious but deeply relaxed, and most patients remember very little of the procedure. It is available here and it makes a significant difference for the patients who need it."

Spec. Dt. Sevcan KOÇ CAN, Endodontics Specialist, DentAkademi

After Root Canal Treatment: What to Expect

Immediately after the procedure

Once the anaesthetic wears off, typically within a few hours, some mild soreness around the treated tooth is normal and expected. This is a response to the procedure rather than ongoing infection, and it usually settles within two to three days. Standard over-the-counter pain relief such as ibuprofen or paracetamol manages this for most patients. Avoid chewing on the treated side until the permanent restoration is in place.

Signs of normal healing

Mild tenderness when biting down in the first few days is common and is not a sign of a problem. The surrounding gum tissue may feel slightly sensitive. These symptoms should reduce day by day. Keeping the area clean with gentle brushing and flossing supports healing.

When to contact your dentist

Most root canal treatments heal without complications. Contact your dentist promptly if you experience severe or worsening pain not controlled by over-the-counter medication, increasing swelling rather than decreasing, a visible bump or swelling on the gum near the treated tooth, or the temporary filling coming out. These signs occasionally indicate that further treatment is needed, and catching them early makes the resolution simpler.

Long-term care

A root canal-treated tooth no longer has a living pulp, but it still needs the same daily care as every other tooth. Brush twice daily, floss regularly, and attend professional check-ups so the treated tooth and surrounding bone can be monitored over time. The most important factor in long-term success is having the permanent restoration placed promptly. A well-restored root-treated tooth can function normally for many years.

Why Do Patients Choose Istanbul for Root Canal Treatment?

The cost of root canal treatment in the UK ranges from approximately £400 to £1,000 per tooth depending on complexity, with the subsequent crown costing an additional £600 to £1,200. For patients already coming to Istanbul for other dental treatment, adding a root canal and crown to the same visit represents a significant additional saving. For patients coming specifically for root canal treatment, the cost difference combined with the shorter waiting times compared to NHS or private UK appointments makes Istanbul a practical choice.

At DentAkademi, root canal treatment uses rotary endodontic instruments, which are more efficient and reduce procedure time compared to manual files. CBCT imaging is available for complex cases with multiple, curved, or calcified canals, allowing the dentist to map the root anatomy precisely before treatment begins. The in-house dental laboratory also means that if a crown is needed after root canal treatment, it can be fabricated and fitted in the same trip.

DentAkademi by the Numbers

6,000+
Dental implants placed annually at DentAkademi
43%
International patients
14
Treatment units
2,500 m²
Dedicated dental facility
In-house
Dental laboratory on-site

Toothache, sensitivity, or swelling that needs attention? Get in touch and we will arrange an assessment to confirm whether root canal treatment is needed and what the treatment plan involves.

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Practical Considerations for International Patients

How long does root canal treatment take?
Most straightforward single-rooted teeth can be treated in one appointment of 60 to 90 minutes. Back teeth with multiple canals typically require two appointments of similar length, spread over 2 to 3 days. The examination and diagnosis take place before treatment begins, usually at the same or preceding appointment.

Can I fly home after root canal treatment?
For straightforward cases, most patients can fly home the same day or the following day with no problems. For more complex cases involving established abscesses, your dentist will advise on an appropriate recovery period before flying. Cabin pressure changes are generally well tolerated after root canal treatment.

What about the crown afterwards?
If a crown is needed after root canal treatment, it can often be placed in the same Istanbul trip. Crown preparation takes one appointment, the laboratory fabricates the crown over 3 to 5 days, and the final cementation takes a further appointment. A temporary crown is placed in between so the tooth is never unprotected. The total trip for root canal plus crown is usually 5 to 7 days.

What if I develop symptoms after returning home?
Mild soreness in the first few days after returning home is normal. If symptoms worsen rather than improve, or if swelling develops, contact us promptly. We can advise on whether you need to see a local dentist urgently, provide documentation for any local dentist you consult, and in most cases manage the situation remotely until you are able to be seen in person.

Frequently Asked Questions

Root canal treatment removes the infected or inflamed pulp from inside a tooth, cleans and disinfects the root canal system, and seals it to prevent reinfection. The tooth is then restored with a crown or filling. The result is a tooth that is free from infection, no longer painful, and preserved in its normal position in the jaw.
The procedure itself is not painful. It is carried out under local anaesthesia, which numbs the tooth and surrounding tissue completely. Most patients feel pressure and movement during the procedure but not pain. The pain that people associate with root canal treatment is the infection before treatment, not the procedure itself. If you feel more than pressure at any point during treatment, tell your dentist immediately, additional anaesthesia can be given.
Common signs include persistent toothache, lingering sensitivity to heat or cold that doesn't settle within a few seconds, pain when biting, gum swelling near a tooth, or a tooth that has darkened. However, some teeth with affected pulps cause very little pain initially. A professional assessment with X-rays is the only way to confirm whether root canal treatment is needed. Don't wait for symptoms to worsen before seeking assessment.
Most straightforward cases take 60 to 90 minutes and are completed in a single appointment. More complex teeth, particularly molars with multiple or curved canals, are sometimes treated across two appointments of similar length. Your dentist will give you a realistic expectation of the number of appointments needed after the initial assessment and X-rays.
A properly treated and restored root canal tooth can last for the rest of the patient's life in many cases. The key factors are the quality of the root canal treatment itself, having a proper crown placed after treatment on back teeth, and maintaining good oral hygiene and attending regular professional check-ups. The treated tooth is monitored at routine visits to confirm the surrounding bone remains healthy.
Root-treated back teeth become more brittle over time because the pulp, which previously supplied moisture to the dentine, is no longer present. Without a crown providing full coverage protection, these teeth are at significantly higher risk of fracturing. A fractured tooth after root canal treatment may not be salvageable. For front teeth with adequate remaining structure, a filling may be sufficient, but for back teeth a crown is almost always the correct restoration.
An infected tooth will not heal on its own. The infection can spread from the root tip into the surrounding bone, causing an abscess. If left long enough, the infection can spread further and in rare cases become a serious medical situation. The tooth will eventually need to be extracted. Early root canal treatment, before significant bone loss or abscess formation, produces better outcomes and simpler treatment than waiting.
In most cases where the tooth can be saved, root canal treatment is preferable to extraction. A natural tooth provides better chewing function, maintains the surrounding bone, and avoids the cost and time involved in implant or bridge treatment to replace an extracted tooth. Extraction is considered when the tooth cannot be saved due to severe structural damage, vertical root fracture, or insufficient bone support.
Root canal treatment has a high success rate when properly performed and followed by an adequate restoration. In a small percentage of cases, the treated tooth may not heal as expected, or a reinfection may develop later. When this happens, retreatment (a second root canal on the same tooth) is often possible. In cases where retreatment is not viable, a surgical procedure called an apicoectomy can address infection at the root tip without removing the tooth.
Root canal retreatment is the procedure performed when a previously treated root canal has failed or become reinfected. The existing filling material is removed from the canals, the canals are recleaned and disinfected, and they are resealed. Retreatment is more complex than initial root canal treatment and requires CBCT imaging to assess the anatomy before starting. It is an alternative to extraction when the tooth is otherwise salvageable.
For the first few days after treatment, avoid chewing on the treated side, particularly anything hard or crunchy. Until the permanent restoration is in place, the tooth has a temporary filling and is more vulnerable. Once the permanent crown or filling is placed and confirmed settled, you can return to a completely normal diet. Most patients notice that they can eat comfortably again much sooner than they expected.
Yes. For patients with significant dental anxiety, IV sedation can be used alongside local anaesthesia. Under sedation, you remain conscious but very relaxed, and most patients remember little of the procedure afterwards. It is available at DentAkademi for root canal treatment and should be discussed at the initial appointment so it can be arranged before the treatment session.
It depends on the tooth. Front teeth (incisors and canines) typically have one canal each. Premolars usually have one or two. Molars commonly have three or four canals, and some can have five or more. The exact number and shape of the canals varies between individuals, which is why CBCT imaging is used for complex cases, to map the anatomy before treatment begins and avoid missing any canals during cleaning.
An endodontist is a dental specialist who has completed postgraduate training specifically in root canal treatment and related procedures. They manage complex cases, including retreatment, calcified canals, and root-tip surgery, in addition to routine root canals. A general dentist can perform straightforward root canal treatment on accessible teeth. At DentAkademi, complex cases are referred to or performed by our endodontics specialist.
Yes, root canal treatment is the primary treatment for a dental abscess when the tooth can be saved. The abscess is drained as part of the procedure, and the source of the infection is removed by cleaning the canals. In some cases where the infection is severe, a course of antibiotics may be prescribed before or alongside treatment to reduce the acute inflammation. Antibiotics alone will not resolve a dental abscess, the source of infection inside the tooth must be addressed for the problem to be properly treated.

Summary

Root canal treatment saves teeth that would otherwise need to be extracted. It removes the source of infection and pain, seals the tooth against reinfection, and allows the tooth to continue functioning normally for many years. The procedure is not as uncomfortable as its reputation suggests, carried out under local anaesthesia, most patients find it comparable to having a filling.

The most important factors in a successful outcome are having the treatment done before the infection becomes established, and having the tooth properly restored with a crown or filling after treatment. A root canal without the subsequent restoration is an incomplete result.

For international patients, root canal treatment fits into a single Istanbul visit efficiently, whether as a standalone appointment or as part of a broader dental plan. The cost is substantially lower than UK private rates, the waiting time is typically much shorter, and the treatment can often be combined with crown placement in the same trip.

Toothache That Won't Go Away?

Don't wait for the pain to worsen or an abscess to develop. Early root canal treatment is simpler, more comfortable, and produces better long-term outcomes than delayed treatment. Contact us to arrange an assessment.

Book a Dental Assessment