Contacting us at O3 Dental couldn’t be easier. Simply call 074 912 2409 and speak to a member of our friendly team or fill out the short form and we will get back to you as quickly as we can.

    Contact O3 Dental



    O3 Dental, 25 Upper Main Street, LETTERKENNY, Co. Donegal, F92 NY7D.

    Opening times:
    9am – 5pm Monday – Friday

    Great dental practice. All staff are friendly and put you at ease if you are bit nervous of the dentist. I have tried a number of dentists and have now stuck with Damian for over 10 years. I highly recommend this practice.read more
    Mari O'Hagan
    Mari O'Hagan
    12:43 22 Sep 18
    I highly recommend this fantastic surgery. Having cosmetic work carried out on my teeth has given me more confidence. First class service.
    Christina Paul
    Christina Paul
    22:54 27 Feb 18
    Very efficient service. The staff are very friendly and Mr Flanagan makes the treatment as pain free as possible. Would recommend this practice.
    Lilian Shah
    Lilian Shah
    15:31 18 Dec 17
    This is a great dental practice. Damian never stop learning his trade and you will reap the benefits of all of his experience and expertise. Dentists aren't usually a joy to visit.. but this one is. I highly recommend you give Damian and his team a call.read more
    Owen Cushenan
    Owen Cushenan
    12:16 01 Nov 17
    I have received nothing but the best treatment from Damian and all the team over the last few years. As a dentist myself, I can highly recommend this practice.
    Ivan Mccappin
    Ivan Mccappin
    13:01 24 Oct 17
    Going to dentist before I always had feelings of trepidation, but not anymore! The moment I stepped through the door of Mr Flanagan's state of the art surgery all my fears were quickly dispelled. Damian put me totally at ease and talked me through the various stages of my procedure. I have had numerous treatments carried out including crowns and veneers which lots of my friends have commented on. I would have no hesitation in recommending Mr Flanagan in returning to his surgery and being treated as professionally as I was.read more
    paula mckay
    paula mckay
    16:13 22 Oct 17
    Very pleased with all the dental work done, great attention to detail and a great eye for the aesthetic. I will continue to travel to Ballymena and Belfast. Highly recommend this no surprise service.read more
    Michael Comyn
    Michael Comyn
    12:36 17 Aug 17
    Hello I'm mairead I would love 2 come and c uns as my dentist has left me with very little teeth I can't eat and don't go out because I have very little teeth or do really talk 2 any 1 because of my teethread more
    Mairead Brown
    Mairead Brown
    20:25 14 Jun 17
    I first visited the O3 Dental Studio in Ballymena in 2003. Right from the first time I met him I was impressed by Dr Damian Flanagan. I was very nervous as I knew I needed a lot of work done on my teeth including cosmetic dentristry. Damian's compassionate and calm manner put me at my ease right from the start. He always explains clearly exactly what work needs to be done including the cost. The work he has done since I first visited him has been of the highest standard. My regard for Damian is shown by the fact that since my first visit I have never again gone to another dentist in spite of the fact that I have a long journey to get to his studio.Over the years I have come to know Damian and his team - Karen his wife, and Sonya. They have always been so considerate and helpful I am delighted to get this opportunity to thank themJoan Kennedyread more
    Joan Kennedy
    Joan Kennedy
    15:05 02 Jun 17
    I am petrified of the dentist and always have been, but I can honestly say Damian is the best dentist I have ever been to, very professional, explains everything and his dental studio is very clean and organized with all modern equipment. Can't recommend highly enough.read more
    Natalie Donnelly
    Natalie Donnelly
    08:01 02 Jun 17
    Brilliant Man(Dr.Flanagan). Everyone very helpful and friendly.100% service.
    Mary Donnan
    Mary Donnan
    18:57 14 Nov 16