What Is Root Canal Treatment? A Rescue Mission Inside Your Tooth
Root canal treatment is a type of endodontic treatment that removes infection from inside a tooth so the tooth itself can be saved. At the centre of every tooth sits the pulp, a soft tissue containing nerves, blood vessels and connective tissue. It runs down through each tooth root canal. When the pulp becomes infected or damaged, treatment is often needed to stop the infection spreading.
At Mona Lisa Smiles in New Barnet, root canal treatment starts with removing the infected pulp. The root canals are then carefully cleaned and disinfected, and the space is sealed and restored, usually with a crown or a tooth coloured filling, inlay or onlay, to help prevent reinfection, so your natural tooth stays in place.

Signs You May Need Root Canal Treatment: When Your Tooth Is Asking for Help
These are the most common signs that the pulp inside a tooth’s root canal may be infected or inflamed. If you notice any of them, book an assessment with Mona Lisa Smiles in New Barnet on 020 8449 3411.

Benefits of Root Canal Treatment: Why Saving the Tooth Is Worth It
Private root canal treatment at Mona Lisa Smiles in New Barnet is focused on keeping your own tooth healthy and working, rather than removing it.
- Helps keep your natural tooth in place
- Aims to remove the source of infection inside the tooth
- May help relieve toothache and tenderness
- May help restore normal chewing and speaking
- Can avoid the need for an extraction in many cases
- Helps keep your bite and neighbouring teeth stable by avoiding a gap
Is Root Canal Treatment Painful? Here’s the Honest Answer
For most patients, no. Root canal treatment at Mona Lisa Smiles in New Barnet is carried out under effective local anaesthetic, so most people find it feels similar to having a routine filling. The treatment is designed to relieve the pain of an infected tooth rather than add to it, and many patients notice their discomfort easing once it’s done.
If dental visits make you particularly anxious, sedation options may be available to help you feel more relaxed during your appointment. Just mention it when you book online or call 020 8449 3411, and our team will talk you through what’s possible.
What Happens If a Tooth Infection Is Left Untreated?
An untreated tooth infection rarely goes away on its own. It can lead to severe pain, an abscess, facial swelling, bone loss around the tooth root and, in some cases, losing the tooth altogether. Mona Lisa Smiles in New Barnet offers emergency appointments whenever possible, so if you think you need an emergency root canal, call 020 8449 3411. Treating the problem early often means the tooth can be saved. and avoids the gap left by an extraction, which can lead to jawbone loss and premature facial ageing over time.
Aftercare Following Root Canal Treatment: Getting Back to Normal
Mild sensitivity for a few days is normal after root canal treatment. To help your tooth settle, follow the aftercare advice our team gives you, keep up good brushing and flossing alongside regular hygiene therapy appointments with our dental hygienists, avoid biting hard on the treated tooth at first, and attend any follow-up appointments. Most patients return to their usual routine shortly afterwards, and regular check-ups help keep the restored tooth healthy for the long term.
Why Choose Mona Lisa Smiles for Your Root Canal Treatment?
Being told you need root canal treatment can feel worrying, so at Mona Lisa Smiles in New Barnet we keep things calm, clear and focused on you. Root canal treatment is part of our general dentistry services in New Barnet, and patients come to us from across North London for:
- An on-site CT scanner, available when a more detailed 3D view of the tooth and its roots is needed
- Our own dental laboratory, so any crown needed after treatment can be planned, fitted under one roof
- Clear explanations before, during and after every appointment
- Sedation options for nervous patients
- A focus on saving your natural tooth wherever possible
- Emergency appointments whenever possible, plus free parking nearby and a short walk from New Barnet station
Frequently Asked Questions
Root canal treatment at Mona Lisa Smiles in New Barnet is usually completed in one or more appointments, depending on how many root canals the tooth has and how severe the infection is. Your dentist will explain the expected number of visits at your assessment, so you can plan around work and family.
Often, yes, particularly for back teeth, which take the most pressure when you chew. A crown helps protect a root-canal-treated tooth from cracking. Mona Lisa Smiles has its own dental laboratory, so if a crown is recommended it can be planned, fitted under one roof.
Yes, in many cases. Root canal treatment removes the infection from inside the tooth so it can stay in place instead of being extracted. Our dentists will assess the tooth first and tell you honestly whether it can be saved.
Yes. Root canal treatment is a well-established and widely performed dental procedure. At Mona Lisa Smiles it is carried out under local anaesthetic, following thorough assessment and careful planning of your tooth.
Delaying treatment allows the infection to spread. This can lead to an abscess, swelling, bone loss around the tooth root and, eventually, losing the tooth. If you’re in pain, call Mona Lisa Smiles on 020 8449 3411, as emergency appointments are offered whenever possible.
Not usually. Most root canal treatment, also called endodontic treatment, is carried out by general dentists. At Mona Lisa Smiles, our dentists assess every tooth first. If your case is particularly complex, they will explain your options clearly before any treatment begins.
No. Root canal treatment cleans and seals the inside of the tooth without surgery. Root canal surgery, known as an apicoectomy, is a separate procedure on the tip of the root, sometimes needed when standard treatment isn’t enough. Your dentist will advise which approach suits your tooth.
Yes. Patients visit our New Barnet practice for root canal treatment from across North London and Hertfordshire, including Potters Bar, Finchley, North Finchley, Whetstone, Arkley, Mill Hill, Cockfosters, New Southgate and East Barnet Village. We’re a short walk from New Barnet station, with free parking close by.
Book Your Root Canal Consultation in Barnet
Toothache, lingering sensitivity or swelling? Book your root canal consultation at Mona Lisa Smiles, 83 Station Rd, New Barnet, EN5 1PX. Early assessment gives your tooth the best chance of being saved. We welcome patients from Barnet, North London and Hertfordshire. Book online or call 020 8449 3411, Monday to Friday, 8:00am to 6:00pm.

