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Root Canal Treatment - Harcourt Dental Clinic | Dentist in Dublin

14 Harcourt Street, Dublin, D02 KD21

Contact 01 475 1313 Online Booking

Root canal treatment is a common and effective way to treat infection inside a tooth and allow it to be retained rather than removed.

Modern techniques mean that treatment is usually straightforward and far more comfortable than its reputation suggests.

What is root canal treatment?

Inside each tooth is a space containing nerves and blood vessels (the pulp). If this tissue becomes infected or inflamed — usually due to decay, cracks, trauma, or repeated dental work — it can cause pain, sensitivity, or swelling.

Root canal treatment removes the infected tissue, cleans the inside of the tooth, and seals it to prevent further infection.

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FREQUENTLY ASKED QUESTIONS

What does treatment involve?

Root canal treatment is usually carried out over one or more visits and involves:

Local anaesthetic to ensure comfort.
Accessing the inside of the tooth.
Removing infected or inflamed tissue.
Cleaning and disinfecting the root canals.
Sealing the canals to prevent reinfection.

Once the root canal is completed, the tooth is restored to function normally again.

Does root canal treatment hurt?

With modern techniques and local anaesthetics, root canal treatment is usually no more uncomfortable than having a filling placed. Most patients are surprised by how manageable the procedure feels.

Some mild tenderness afterwards is normal and usually settles within a few days.

Why is a crown often recommended afterwards?

Teeth that need root canal treatment are often weakened by decay or previous restorations. A crown is frequently advised to:

Protect the tooth from fracture.
Restore strength and function.
Improve the long-term success of the treatment.

Not every tooth needs a crown — this is assessed individually.

How long does a root canal-treated tooth last?

With proper restoration and maintenance, a root canal-treated tooth can last many years. Longevity depends on:

The quality of the root canal treatment.
The final restoration.
Bite forces and tooth wear.
Oral hygiene and regular review.

Is it better to remove the tooth instead?

Where possible, keeping your natural tooth is usually the preferred option. Root canal treatment allows this in many cases.

Can the infection come back?

While root canal treatment is highly predictable, no treatment has a 100% success rate. Good restoration and maintenance reduce the risk of reinfection.

Will the tooth change colour?

Some teeth may darken over time. This can often be managed with whitening or cosmetic restoration if needed.

Treatment

When is root canal treatment needed?

Root canal treatment may be recommended if you:

Have a persistent toothache.
Experience pain when biting.
Have prolonged sensitivity to hot or cold.
Have swelling or an abscess.
Have deep decay or a cracked tooth.

In some cases, there may be little or no pain, and the problem is detected on X-ray during a routine examination.

Planning and responsibility of care

Root canal treatment is usually carried out by your treating dentist. In more complex cases — such as difficult anatomy, persistent infection, or retreatment — referral to or collaboration with our specialist endodontist may be recommended.

Patient takeaway

Root canal treatment removes infection and saves teeth. When planned and restored properly, it is a reliable and effective solution.

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See how our treatments create beautiful, confident smiles.

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TREATMENT TESTIMONIALS

Our Smile Transformations

We’re proud to be a trusted part of our patients’ oral health journeys. Explore their testimonials to see how we’re creating positive dental experiences – one smile at a time.

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I required some extensive dental work, which I had been catastrophising in my head for some time now. Having finally plucked up the courage, I consider myself extremely fortunate to have been cared for so professionally & competently by Lorna…

Colin K

I had a great experience with Lorna. She was very competent, gentle and took the time to explain everything clearly. I’d highly recommend Lorna to anyone who feels anxious about visiting the dentist!

Amy T

I’ve been a patient at Harcourt Dental Clinic for about 5 years now, and I couldn’t be happier with the service I’ve received. From the friendly and welcoming staff to the professional and skilled dentists, every visit has been a…

Adrian V

Martina is an excellent hygienist, professional, kind, and thorough. She made me feel completely at ease and did a fantastic job with my cleaning. I highly recommend her!

Ana R

I would highly recommend this dental practice. They are very professional in every sense. Special shout-out for Cianna & Kevin, two highly skilled dentists.

Brian R

I strongly recommend this dental practice. The reception staff are always friendly and polite. Dr Lorna Mahon and her assistant have been excellent in treating a quite difficult dental issue with great care and professionalism.

Matthew V

Contact us today!

If you have a broken tooth or a cracked tooth, contact us for an assessment and a clear plan.

Call Harcourt Dental Clinic Request an appointment

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Monday - FridayBy appointment only

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CAREERS AT HARCOURT DENTAL

4.8

Harcourt Dental Clinic

4.8

deboshruti banerji

13:48 08 Apr 26

No better dental health facility than this in Dublin. I’ve been coming here for years now and the care, quality and professionalism of Harcourt Dental Clinic is unparalleled - visits with Lorna Mohan, Ruth Morris and Martina have been absolute class. :)

Anne Bacon Byrne

18:17 23 Dec 25

I have been attending harcourt Dental for many years.. it’s always a pleasure to attend as all the staff are so friendly and professional…

Ruth

18:28 07 Nov 25

I’ve been going to harcourt dental for many years and always had a great experience. Dr. Lorna is such a great dentist, very attentive and reassuring and provides advice on how to maintain oral health. I’ve had other procedures with their oral surgeon and endodontist such as extractions and root canals and all have been very good. Very happy with them.

Kevin Smith

16:05 08 Oct 25

I was in with Martin’s O’keeffe (hygienist ) last week and as visits to a dentist go it was very enjoyable . Martina is very good at her job and is very professional and always makes me feel at ease and we even manage to have a bit of banter. I would have absolutely no hesitation in recommending her or anyone else I’ve dealt with over the years . Keep up the good work Harcourt Dental Clinic 👏👏

Patricia Hinch

19:39 31 Aug 25

Lorna from Harcourt Dental Clinic is amazing. Her approach to managing my teeth is brilliant, I am 58, with a mount full of large filings and Lorna's work has made such improvements. She is so professional and communicates really well, setting out a plan. I am so relaxed when I go to the dentist that I fell asleep when I was getting a large back filling!Reception lady is very nice and helpful and dental nurse was so friendly when I was in with Lorna on 29/9.

Angela Krav

20:15 29 Aug 25

I again attended hygienist Rosie this week to have my teeth cleaned and just to say it was a really nice experience. Rosie is excellent in her job and is very careful and kind in every way. Thank you Rosie see you in 6 months.

Elena

21:08 24 Aug 25

I highly recommend Harcourt Dental Clinic. Everyone was very polite and professional. I’m always quite anxious about dental visits, but the Doctor I had my appointment with, made me feel completely at ease. She was really kind, and explained everything clearly.

Brian Rohan

22:22 13 Aug 25

I would highly recommend this dental practice. They are very professional in every sense. Special shout out for Cianna & Kevin, two highly skilled dentists.

Amy Todd

19:13 26 Jul 25

Colin Kelly

12:11 22 Jul 25

I required some extensive dental work which I had been catastrophising in my head for some time now. Having finally plucked up the courage, I consider myself extremely fortunate to have been cared for so professionally & competently by Lorna and the team. Lorna has a wonderful kind manner, communicates very clearly, is a truly exceptional dentist and is a kind, empathic person. I cannot recommend highly enough. Thank you Lorna & team!

Terri G

18:23 17 Jul 25

I had a back tooth removed and a dental implant inserted. The entire process took several months. I received excellent care from Cianna O’Brien and her dental assistant at Harcourt Dental Clinic. They were both professional, warm and caring from the start of the process to the end.

Ana Reis

13:20 05 Jun 25

Martina is an excellent hygienist, professional, kind, and thorough. She made me feel completely at ease and did a fantastic job with my cleaning. I highly recommend her!

Eileen Lally

17:16 18 May 25

Great experience in Harcourt Dental Clinic. The hygienist Martina is great. She does a great job on my teeth every 3 to 4 months I'm very happy with her.

Adrian Vacaru

11:48 03 Apr 25

I've been a patient at Harcourt Dental Clinic for about 5 years now, and I couldn't be happier with the service I've received. From the friendly and welcoming staff to the professional and skilled dentists, every visit has been a positive experience.The clinic's communication is excellent, with clear explanations of treatments and costs. Appointments are always available at convenient times, and I've never had to wait long to be seen.The prices are very reasonable, and I appreciate the transparency around costs.Overall, I highly recommend Harcourt Dental Clinic to anyone looking for a reliable, trustworthy, and friendly dentist. Thank you to the whole team!

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