Root canal treatment has an unfair reputation. For decades, it has been the punchline of dental jokes and shorthand for “something painful.” In reality, it is a routine procedure that saves millions of teeth every year — and modern techniques make it no more uncomfortable than having a filling.
If you have been told you need root canal treatment, you probably have questions. How much does it cost? Will it hurt? What actually happens during the procedure? This guide answers all of those questions and more.
Whether you are comparing root canal treatment cost UK options or simply want to understand the process, this is your complete resource. Our team of restorative dentists perform root canal treatments regularly and are here to help you through every step.
What Is Root Canal Treatment?
Root canal treatment — also known as endodontic treatment — is a procedure designed to save a tooth that has become infected or severely inflamed on the inside.
To understand why it is needed, it helps to know the anatomy of a tooth. Every tooth has three layers: the hard outer enamel, the dentine beneath it, and the soft inner core called the pulp. The pulp contains nerves, blood vessels, and connective tissue. It is essential for tooth development but is not required for a fully grown tooth to function.
Infection can reach the pulp through deep decay, a crack or chip in the tooth, or trauma such as a knock to the face. Once bacteria enter the pulp chamber, they can cause inflammation, infection, and eventually an abscess.
The goal of a tooth root canal is straightforward: remove the infected tissue, clean and disinfect the root canals, seal the tooth, and preserve the natural tooth structure. The alternative is extraction — but saving a natural tooth is almost always the better outcome.
Signs You Might Need Root Canal Treatment
Not every toothache means you need a root canal. But certain symptoms are strong indicators that the pulp inside your tooth may be compromised.
- •Severe tooth pain when chewing or biting, particularly a deep, throbbing ache
- •Prolonged sensitivity to hot or cold that lingers after the stimulus is removed
- •Darkening or discolouration of the tooth, suggesting nerve damage
- •Swelling and tenderness in the gum near the affected tooth
- •A persistent pimple on the gum (a sinus tract draining infection)
- •No symptoms at all — some infections are discovered during routine X-rays before pain develops
If any of these sound familiar, read our guide on 9 warning signs you shouldn't ignore before seeing a dentist. The sooner an infected tooth is treated, the better the outcome.
The Root Canal Procedure — Step by Step
Understanding what happens during a root treatment can help ease any anxiety. Here is the process broken down into clear steps.
Step 1: Examination and X-rays
Your dentist examines the tooth and takes X-rays to assess the extent of infection and map the root canal system.
Step 2: Local Anaesthesia
The tooth and surrounding area are numbed with local anaesthetic. You will be completely comfortable throughout.
Step 3: Dental Dam Placement
A thin rubber sheet is placed around the tooth to isolate it, keeping it clean and dry during treatment.
Step 4: Access Opening
A small opening is made in the crown of the tooth to access the pulp chamber inside.
Step 5: Cleaning and Shaping
Using specialised instruments, the infected pulp tissue is removed and the canals are carefully cleaned and shaped.
Step 6: Disinfection
Antibacterial solutions are used to flush the canals and eliminate any remaining bacteria.
Step 7: Root Canal Filling
The cleaned canals are filled and sealed with a biocompatible material called gutta-percha to prevent reinfection.
Step 8: Temporary Restoration
A temporary filling is placed to seal the tooth while you wait for your permanent restoration.
Step 9: Permanent Crown
A dental crown is fitted over the tooth to restore its strength, shape, and function for the long term.
The entire process is methodical, precise, and designed to give your tooth the best possible chance of lasting for many years to come.
Does Root Canal Treatment Hurt?
This is the question most patients ask first — and the answer may surprise you. Modern root canal treatment is not the painful ordeal it was decades ago.
With today's anaesthetic techniques, you should not feel pain during the procedure. Most patients describe the experience as similar to having a filling — the main difference is that the appointment takes longer.
It is worth remembering that the pain you may be feeling before treatment is caused by the infection, not the procedure. Root canal treatment actually relieves that pain by removing the source of infection.
After treatment, some mild tenderness is normal for a few days. This is easily managed with over-the-counter painkillers such as ibuprofen or paracetamol. If pain persists beyond a few days, contact your dentist.
Root Canal Treatment Costs in the UK — Full Breakdown
Understanding how much is a root canal in the UK depends on several factors. Here is a transparent breakdown to help you plan.
Factors Affecting Cost
- •Which tooth: Front teeth are simpler; molars are more complex
- •Number of canals: Incisors have one canal; molars have three or four
- •Case complexity: Curved or calcified canals require more time
- •Location: London practices typically charge more than other regions
- •Additional procedures: Retreatments or surgical approaches carry higher fees
Average Root Canal Cost UK
| Tooth Type | General Dentist | Specialist |
|---|---|---|
| Front Tooth (Incisor/Canine) | £300 – £600 | £500 – £900 |
| Premolar | £400 – £800 | £700 – £1,200 |
| Molar | £500 – £1,000 | £900 – £1,500 |
Additional Costs to Consider
- •Initial consultation and X-rays: £50 – £150
- •Dental crown after treatment: £600 – £1,200
- •Retreatment (if previous root canal fails): Typically 20–30% higher than initial treatment
For a complete breakdown of our fees, visit our dental treatment prices page. We provide clear, upfront pricing so there are no surprises.
Why Do Molars Cost More Than Front Teeth?
If you are wondering why root canal cost varies so much depending on the tooth, it comes down to anatomy and complexity.
- •More canals: A front tooth typically has one root canal. A molar has three or four. Each canal must be individually cleaned, shaped, and filled
- •Harder access: Molars are at the back of the mouth, making them more difficult to reach and work on
- •Longer treatment time: A molar root canal may take 90 minutes or more compared to 45–60 minutes for a front tooth
- •Greater complexity: Molar roots are often curved or calcified, requiring more skill and precision
The higher cost reflects the additional time, expertise, and materials required — not an inflated fee. Molar root canals are genuinely more demanding procedures.
Private vs NHS Root Canal Treatment Costs
Root canal treatment is available on the NHS under Band 2 charges, which covers treatments like fillings, or Band 3 if a crown is needed.
| Factor | NHS | Private |
|---|---|---|
| Cost | Band 2: £77.70 / Band 3: £282.80 | £300 – £1,500+ per tooth |
| Waiting Time | Often weeks or months | Usually within days |
| Appointment Length | Often shorter | Longer, more thorough |
| Materials | Standard | Premium options available |
| Crown Options | Metal crowns common | Tooth-coloured ceramics |
The NHS offers a more affordable option, but availability can be limited and waiting times longer. Private treatment typically provides more flexibility, longer appointments, and a wider choice of materials. Many patients choose private care for root canals because of the complexity of the procedure and the importance of thorough treatment.
Does Dental Insurance Cover Root Canal Treatment?
Most UK dental insurance plans do include some coverage for endodontic treatment. However, the details vary significantly between providers.
- •Typical coverage: 50–80% of treatment costs, depending on your plan
- •Annual limits: Most plans cap the total amount you can claim per year
- •Waiting periods: Some policies require you to wait 3–12 months before claiming for major treatments
- •Dental cash plans: These pay a fixed amount towards dental treatment and may help offset costs
Check with your insurance provider before your appointment so you know exactly what is covered. We also offer membership plans that provide discounts on treatments including root canals.
Root Canal Treatment vs Tooth Extraction — Cost Comparison
Some patients ask: “Why not just pull the tooth? It must be cheaper.” On the surface, extraction is less expensive. But when you factor in the cost of root canal treatment versus the long-term cost of replacing an extracted tooth, the picture changes.
| Option | Estimated Total Cost |
|---|---|
| Root canal + crown | £900 – £2,200 |
| Extraction + dental implant | £2,350 – £3,900+ |
| Extraction + dental bridge | £1,650 – £2,900+ |
| Extraction only (no replacement) | £150 – £400 (but risks bone loss and shifting) |
For a detailed comparison of when each option makes sense, read our guide on root canal vs extraction. If a tooth can be saved, it almost always should be.
Where extraction is unavoidable, dental implants offer the most permanent and natural-feeling replacement — but at a significantly higher cost than saving the tooth in the first place.
What Happens After Root Canal Treatment?
Recovery from root canal treatment is usually straightforward. Here is what to expect.
- •Immediately after: Avoid chewing on the treated side until the numbness wears off
- •Pain management: Over-the-counter painkillers (ibuprofen or paracetamol) are usually sufficient
- •Temporary filling: Be gentle with the temporary restoration and avoid sticky or hard foods on that side
- •Crown appointment: Return within 2–4 weeks for your permanent crown to be fitted
- •Long-term outlook: A properly restored root-treated tooth can last a lifetime with good care
Most patients feel significantly better within 24 to 48 hours as the infection clears and the inflammation settles. If pain worsens or swelling develops after treatment, contact your dentist promptly.
Do Root Canal Treated Teeth Need Special Care?
A root-treated tooth does not need dramatically different care, but there are some important things to keep in mind.
- •Brush and floss normally: Good daily oral hygiene protects the tooth from new decay
- •Regular check-ups: Your dentist monitors the tooth and crown at routine appointments
- •Avoid excessive force: Do not use the tooth to crack nuts, chew ice, or open bottles
- •Watch for warning signs: New pain, swelling, or a loose crown should be investigated promptly
With proper care, a root-treated tooth protected by a well-fitting crown can last 15 to 25 years or more — and in many cases, considerably longer. The investment in treatment is well worthwhile.
What Is Endodontic Retreatment?
In a small number of cases, a previously treated tooth may not heal as expected or may develop new problems years later. When this happens, retreatment may be necessary.
Common reasons for retreatment include:
- •A canal was missed during the original treatment (some teeth have hidden or extra canals)
- •New decay has developed around the crown or filling, allowing bacteria to re-enter the tooth
- •The crown or filling has cracked, broken, or become loose
- •A new fracture in the tooth has allowed reinfection
Retreatment involves reopening the tooth, removing the old filling material, re-cleaning the canals, and resealing them. Success rates for retreatment are slightly lower than for initial treatment, but it remains a viable option before considering extraction.
In some situations, a minor surgical procedure called an apicoectomy (root-end surgery) may be recommended as an alternative to full retreatment.
Can Any Dentist Perform Root Canal Treatment?
All qualified dentists are trained in root canal treatment and can perform it. However, for complex cases, a referral to an endodontist — a dentist who has completed additional years of training specifically in root canal procedures — may be recommended.
Specialist referral is more common for:
- •Molars with complex root anatomy
- •Retreatment of previously failed root canals
- •Teeth with calcified or blocked canals
- •Cases requiring apicoectomy
Our dental team provides expert endodontic care for a wide range of cases. For particularly complex situations, we can arrange a referral to a specialist endodontist.
How to Choose a Dentist for Root Canal Treatment in London
Choosing the right dentist for your root canal treatment can make a real difference to your experience and outcome. Here is what to look for.
- •Qualifications and experience: Ensure the dentist is GDC-registered and experienced in endodontic treatment
- •Technology: Ask about digital X-rays, rotary instruments, and magnification — these improve accuracy and outcomes
- •Patient reviews: Read testimonials from other patients who have had root canal treatment at the practice
- •Transparent pricing: A good practice will discuss costs upfront, with no hidden fees
- •Location and convenience: Choose a practice that is easy to reach, especially if you need multiple appointments
If you are unsure whether you need root canal treatment, book a dental examination to discuss your options. An honest assessment is the best starting point.
Frequently Asked Questions About Root Canal Treatment
How long does root canal treatment take?
Most root canal treatments take between 60 and 90 minutes per appointment. Front teeth with a single canal are usually quicker, while molars with multiple canals may require two visits. Your dentist will advise you on the expected treatment time based on your individual case.
Can I drive home after treatment?
Yes. Root canal treatment uses local anaesthesia, not general anaesthesia or sedation, so you are fully alert throughout. You are perfectly safe to drive yourself home after the appointment. The numbness from the anaesthetic typically wears off within two to four hours.
How long does a root canal last?
A well-performed root canal treatment protected by a crown can last a lifetime with proper care. Studies show that root-treated teeth have a success rate of around 85 to 95 percent. Good oral hygiene and regular dental check-ups are essential for long-term success.
Can a root canal fail years later?
It is possible, though uncommon. A root canal can fail if new decay develops around the tooth, if the crown or filling breaks, or if a previously missed canal becomes infected. Retreatment is usually possible and has good success rates when carried out promptly.
Is it better to have root canal or extraction?
In most cases, saving your natural tooth with root canal treatment is the better option. It preserves your bite, prevents bone loss, and avoids the cost of replacement. Extraction may be necessary if the tooth is too damaged to restore, but replacement options add significant long-term cost.
What hurts more — root canal or filling?
Neither should hurt. Both procedures are carried out under local anaesthesia. Most patients report that the experience of having a root canal is very similar to having a filling — the appointment simply takes longer. Any discomfort from the infection is usually relieved by the treatment itself.
Can I eat after root canal treatment?
Wait until the numbness wears off completely before eating to avoid biting your cheek or tongue. Stick to soft foods for the first day or two and avoid chewing directly on the treated tooth until your permanent crown is fitted. Soups, yoghurt, and scrambled eggs are good options.
How much is root canal cost with a crown?
The combined cost of root canal treatment and a crown varies by tooth type. For a front tooth, expect around £900 to £1,800 in total. For a molar, costs can range from £1,100 to £2,200 or more. Your dentist will provide a clear breakdown before treatment begins.
Is root canal safe during pregnancy?
Root canal treatment can be performed during pregnancy if necessary, and is generally considered safe. The second trimester is usually preferred for non-urgent dental work. Local anaesthesia is safe for pregnant patients. Your dentist will take additional precautions and may defer elective treatment where possible.
What is the success rate of root canal treatment?
Root canal treatment has a high success rate, typically between 85 and 95 percent. Teeth restored with a well-fitting crown after treatment have the best long-term outcomes. Success depends on the complexity of the case, the quality of the restoration, and how well the patient maintains their oral health.
This content has been reviewed for clinical accuracy by the dental team at St Paul's Medical & Dental. All treatment descriptions and cost information reflect current UK dental practice.
This article is for general information only and does not replace professional dental advice. Costs are approximate and may vary depending on the complexity of your individual case. Please contact us for a personalised treatment plan and quote.
Need Root Canal Treatment in London?
Our experienced dental team provides expert root canal treatment in a comfortable, modern environment. We offer transparent pricing, flexible appointments, and a reassuring approach for anxious patients. Book your consultation today.