In most cases, no: a root canal is no more painful than having a filling. It is done under local anaesthetic, and what you mostly feel is pressure. The pain that sends you to the dentist comes from the infected or inflamed nerve, and the treatment is precisely what gets rid of it. Here is how a root canal in Luxembourg works, what it costs under the official CNS fee schedule and how much you get back.
🦷 What is a root canal?
At the centre of every tooth is the pulp, usually called the "nerve". It contains blood vessels and nerve endings, and it runs down into the roots through thin canals. Once the pulp is infected or irreversibly inflamed, it can no longer heal on its own.
A root canal means removing that pulp, then cleaning, disinfecting and sealing the canals. You may also hear it called root canal treatment, endodontic treatment or root canal therapy: it is all the same procedure. The goal is simple: keep your natural tooth while removing the source of the pain.
🔍 When is it needed?
Your dentist may suggest a root canal in several situations:
- a deep cavity caused by tooth decay that has reached the nerve;
- pulpitis, meaning inflammation of the pulp, often behind a severe toothache;
- a dental abscess, a sign that infection has settled at the tip of the root;
- a broken tooth where the fracture exposes the nerve;
- a tooth injured by a knock, even years ago, whose nerve has been damaged.
Pain that comes on by itself, wakes you up at night or lingers long after something hot or cold is a signal not to ignore. The earlier the tooth is treated, the simpler the treatment.
😌 Does it hurt?
It is the question our patients ask most often, and a fair one: root canals have had a bad reputation for a long time. Modern techniques and anaesthetics have changed the picture considerably.
💉 During the treatment
Treatment always starts with a local anaesthetic. Once the area is numb, most patients feel no pain, just pressure, some vibration, or the feeling of keeping their mouth open for quite a while. If you feel anything at all, simply raise your hand and your dentist will top up the anaesthetic.
To be honest about one specific case: when a tooth is very inflamed or badly infected, the anaesthetic sometimes takes less easily. Your dentist then has additional techniques available, including intrapulpal anaesthesia. The aim stays the same: keeping you comfortable from start to finish.
🌙 After the treatment
It is common for the tooth to feel tender when you bite for a few days: the tissues around the root have been worked on and settle down gradually. A painkiller recommended by your dentist or pharmacist is usually enough to keep you comfortable. Avoid chewing on the treated side until the tooth has been permanently restored.
Call the practice straight away if you notice:
- swelling of the gum or cheek;
- a fever;
- pain that gets worse rather than better as the days go by.
Good to know: a root canal does not cause pain, it relieves it. Most patients who come in with a throbbing toothache leave feeling a great deal better than when they arrived.
⏱️ How is a root canal done?
Root canal treatment always follows the same logic, in six steps:
- X-ray and diagnosis: your dentist looks at the tooth, its roots and any infection.
- Local anaesthetic: the tooth and gum are numbed.
- Rubber dam: a thin sheet isolates the tooth from the rest of your mouth, keeping it dry and stopping you from swallowing any rinsing solution.
- Opening the tooth and removing the pulp: the dentist reaches the inside of the tooth and removes the diseased nerve.
- Cleaning, disinfecting and shaping the canals: each canal is carefully prepared along its full length.
- Filling and temporary seal: the canals are filled and sealed, then the tooth is closed until it is restored.
📅 How many visits, and how long does it take?
Most root canals are done in one or two visits. It depends on the tooth (an incisor usually has a single canal, a molar has several) and on how severe the infection is. Allow roughly an hour per visit, sometimes longer for a molar.
If the infection is significant, your dentist may place a medicine inside the canals between two appointments, to disinfect them thoroughly before sealing them. This is a normal step, not a sign that something has gone wrong.
🛡️ After a root canal: do you need a crown?
A root-filled tooth no longer has a blood supply from the inside, and it has often already lost part of its structure to decay. It therefore becomes more brittle and can crack under the pressure of chewing.
That is why molars and premolars, which take the heaviest chewing forces, are often protected with a crown. For some front teeth, a simple filling may be enough. Your dentist will tell you which option suits your tooth, depending on how much of it is left and where it sits in your mouth.
⚖️ Root canal or extraction?
Taking out a painful tooth can look like the quicker fix, but a missing tooth leaves a gap that the neighbouring teeth tend to drift into. To chew properly again, you would then need an implant or a bridge, which take longer and cost more.
Whenever the tooth can be saved, a root canal is therefore usually the first option to consider. Your dentist will walk you through the options that fit your situation.
💶 Root canal cost in Luxembourg (2026 CNS fees)
In Luxembourg, dental care is charged according to official fees set by the CNS fee schedule for dentists, valid from 1 June 2026. For a root canal, here are the figures worth knowing:
- Root canal (crown not included): roughly €150 to €400 at the CNS agreed rate, depending on the tooth (an incisor costs less than a molar) and the number of canals and visits.
- After CNS reimbursement: 88% for adults, 100% for under 18s. As an adult, you can therefore expect to pay somewhere around €20 to €50 yourself.
- Crown, if needed: this comes on top, from around €300, and the CNS reimburses 80% of it.
This is not a flat price: the final amount depends on the treatment your tooth actually needs (X-rays, number of canals, number of visits). You will receive a quote before treatment starts, and your fee note shows the exact amount.
📝 Excess fees and your quote
For some procedures, the fee schedule allows a charge above the agreed rate, on one condition: it must be set out in writing and accepted by the patient before treatment. The official fee remains the basis for CNS reimbursement.
In practice, you always know in advance what you will pay. Feel free to ask anything about your quote: our team will happily take you through it line by line.
🏥 How much does the CNS reimburse?
A root canal is a conservative treatment covered by the CNS, Luxembourg's national health insurance fund. The current rules are:
- Adults: 88% of the official fees reimbursed.
- Under 18s: 100% of the official fees reimbursed.
- Annual threshold: dental care is reimbursed at 100% up to €83.90 per year (amount as of 1 August 2026).
- No upfront payment: at Dentalplus, thanks to direct payment (PID), you only pay the part left for you to cover.
For the remaining share and any excess fees, a top-up health insurance (CMCM, DKV, Foyer…) may cover the difference. Remember to send them your fee notes.
👑 Crowns: a different scheme
The crown that often protects a root-filled tooth counts as a dental prosthesis. It is reimbursed at 80% of the official fees. Good news for regular patients: this 20% contribution is waived if you had your annual dental check-up in each of the two previous years. One more reason not to skip your check-up.
🌍 Cross-border workers: how does it work?
If you work in Luxembourg, you are insured with the CNS and get exactly the same reimbursement as a resident. Whether you live in France, Belgium or Germany makes no difference. Just bring your Luxembourg social security card to your appointment.
❓ Frequently asked questions
😣 Does a root canal hurt?
Usually not: a root canal is done under local anaesthetic and is no more painful than a filling. What you mostly feel is pressure. If the tooth is very inflamed, the anaesthetic sometimes takes less easily, but your dentist can top it up. The pain that brings you in comes from the infection, and the treatment is what removes it.
⏳ How long does a root canal take?
Most root canals take one or two visits of roughly an hour each. It depends on the tooth and the infection: an incisor usually has a single canal, while a molar has several. If the infection is significant, a medicine may be placed in the canals between two appointments before they are sealed.
🩹 How long does it hurt after a root canal?
Feeling some tenderness when you bite for a few days is common, and it eases gradually. A painkiller recommended by your dentist or pharmacist is usually enough. Call the practice if the pain gets worse instead of better, or if swelling or a fever appears: these signs should be checked quickly.
💶 How much does a root canal cost in Luxembourg?
At the agreed rate in the CNS fee schedule valid from 1 June 2026, a root canal (crown not included) costs roughly €150 to €400, depending on the tooth and the number of canals and visits: an incisor costs less than a molar. After 88% reimbursement, an adult typically pays around €20 to €50. Your quote gives the exact amount.
🏥 Does the CNS cover root canal treatment?
Yes. A root canal is a conservative treatment reimbursed by the CNS at 88% of the official fees for adults and 100% for under 18s. Dental care is also reimbursed at 100% up to an annual threshold of €83.90. Cross-border workers insured with the CNS get exactly the same reimbursement as residents.
👑 Do I need a crown after a root canal?
Not always. A root-filled tooth becomes more brittle: molars and premolars, which take the heaviest chewing forces, are often protected with a crown. For some front teeth, a simple filling may be enough. Your dentist will tell you which option suits your tooth, depending on how much of it is left and where it sits.
📍 Root canal treatment in Bonnevoie, near the station
Our practice is open 7 days a week in Bonnevoie, a few minutes from Luxembourg's central station. Our team speaks English, French and German, takes the time to explain every step and gives you a clear quote before any treatment.
Severe pain or swelling? In pain right now?
You can also call us on (+352) 27 52 18 25.
Written by the Dentalplus Luxembourg team · 3 Rue de Houffalize, 1737 Bonnevoie · www.dentalplus.lu
Fees: CNS fee schedule for dentists valid from 1 June 2026; reimbursement rates as published on cns.public.lu (checked on 6 October 2026).
This article is for information only and does not replace a consultation. Only your dentist can make a diagnosis and suggest the right treatment.