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O3 Dental Letterkenny

O3 Dental Letterkenny

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25 Upper Main Street, Letterkenny, Co. Donegal, F92 NY7DIreland

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Opening hours

Monday09:00 - 17:00
Tuesday09:00 - 17:00
Wednesday09:00 - 17:00
Thursday09:00 - 17:00
Friday09:00 - 17:00
Enquire for a fast quote ★ Good ServiceScore™ 6.3 from 59 votes ★ 6 verified patient reviews. Visit our Dentist - 25 Upper Main Street, Letterkenny, Co. Donegal, F92 NY7D, Ireland.

Popular Treatments

Dentist Consultation
Dental Implants
Teeth Whitening
Dental Bridges
Root Canals
Mini Implants
Bone Graft
Dental CT
See all treatments & prices

About O3 Dental Letterkenny

Dental Implants in Letterkenny. 

Would you like to be treated by a prominent implantologist and cosmetic dentist with Harley St training?

At the helm of this award winning, privately owned, family practice, is Mr P.D. Flanagan. With 25 years experience, Damian is regarded as one of the UK and Ireland’s most esteemed implantologists and cosmetic dentists.

Would you like a boutique practice offering a bespoke and unique patient experience?

Our small professional team are committed to making your dental experience a pleasurable one. We are passionate and dedicated to providing clients with excellent, lasting results.

Would you like to have a dentist who you can trust and feel at ease with?

From the moment you meet Damian, you will feel confident that you are in the best hands. Treatment plans are meticulously planned for optimum results.
We pride ourselves on our excellent level of customer service and unparalleled attention to detail.

Is a guarantee and quality important to you?

We offer a  guarantee on our cosmetic and implant treatments. We only use the best laboratories and dental materials for your care. Our fees are reflective of the high quality, standard and attention to detail of our work.

Is a modern, innovative, technologically lead practice important to you?

We pride ourselves in having the most up to date dental technology to ensure optimum treatment outcomes in a relaxing clinical environment.

Is having a warm welcome and the chance to discuss treatment options informally important to you?

Together, Karen, the practice manager,  and Sonia, our lead dental nurse, complete the dedicated team who are committed to ensuring that you are kept informed at every stage of your treatment. They will always be on hand to give you a warm welcome, anticipate your treatment needs and answer your questions at any stage.

Would you feel more assured by having recommendations from existing clients of the practice?

Our reputation has been built by creating lasting and trusting relationships with our clients.  Many travel from all over Ireland and the UK,  and are happy to recommend family and friends .

But you don’t have to take our word for it – just watch our client video testimonials and make your own mind up!

Mr P.D. Flanagan | Dentist in Ballymena, Belfast & Letterkenny | Prominent Implantologist
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Patient reviews

4.9 from 6 verified reviews
Christian Bardini, Ireland
( Review verified by email)

I can't believe how quickly they got the tooth out

5 50 Extractions • Paid: €220

I went in for a molar tooth extraction. I can't believe how quickly they got the tooth out. Brilliant service is highly recommend.

Deirdre Gallagher, Ireland
( Review verified by email)

Can't imagine going anywhere else

4.5 50 Dentist Consultation

Damian and Leona are a great team. My daughter and I attend. Always happy and reassured. Can't imagine going anywhere else.

Kathleen, Ireland
( Review verified by phone and email)

I am so happy to have found my future dentist and to not have to be fearful anymore

5 50 Dentist Consultation

I hate going to the dentist because I have dental phobia. I went to 03 Letterkenny Dental fearful but they understood l received conscious sedation and remember nothing at all about the treatment. Damian and Leona are fantastic. They are caring, and professional. I cannot say enough about the great job they did on my teeth. I am so happy to have found my future dentist and to not have to be fearful anymore.

Marion Kee, UK
( Review verified by phone and email)

Thank you very much

5 50 Dentist Consultation

During this virus time, Dr. Damien very kindly treated me in an emergency for bad toothache.
I cannot speak highly enough of the treatment and reassurance I found in his clinic.

Thank you very much
Marion Kee

Anonymous, Ireland
(We were unable to verify the reviewer)

The staff were quite friendly and the clinic was lovely

Teeth Whitening

My mom used to be very afraid of the dentist, but she liked O3 and thought the clinic was in a nice environment. I don’t know what the price of my teeth whitening was, because she covered the bill, but the results were great.

The staff were quite friendly and the clinic was lovely. I went back for another whitening session and I’d definitely recommend them to others. They’re good!

Fiona, Ireland
( Review verified by phone)

Excellent service, on time, clean and comfortable

5 50 Hygienist Session

I had a clean and polish with this clinic.

Excellent service, on time, clean and comfortable. The staff are friendly and helpful.

Elaine, Ireland
( Review verified by phone and email)

I cannot believe I'm actually saying "I love my dentist"

5 50 Fillings, Extractions

After years of avoiding dentists, after many unpleasant experiences, I am so happy to have found 03 dental and I cannot believe I'm actually saying "I love my dentist".

Such a great experience, fillings, tooth extraction not a problem! I feel like I have new teeth. Mr. Flanagan was so understanding and explained the procedure in detail, exactly how it would be! And his dental nurse/assistant went above and beyond to make me feel comfortable! My sister is also going to join the practice. Delightful. Keep smiling.

Treated by: Mr P.D. Flanagan
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  • BADT - British Association of Dental Therapists (UK) 
  • GDC - General Dental Council (UK) 
  • ADI - Association of Dental Implantology (UK) 
  • BDA - British Dental Association (UK) 


ParkingAccessible to disabled peoplePublic transport accessWheelchair accessible toiletAccess without stepsDisabled parkingPatient bathroomWireless access

Travel services

Local travelLocal accommodation



Bone Graft


Dental Bridges


Dental CT


Dental Implants


Mini Implants


Dentist Consultation




Implant Dentist Consultation


Root Canals


Teeth Whitening



O3 Dental Letterkenny - Dental Implants in Letterkenny

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Private Patients Welcome

Mr P.D. Flanagan

Show Phone Number

25 Upper Main Street, Letterkenny, Co. Donegal, F92 NY7DIreland