About Us

Meet Dr. Marie O’Neill

Dr. Marie O’ Neill

Consultant Oral Surgeon

BDS (Hons) NUI, MFDS RCSEd. PGrad. Dip. Con. Sed, D. Ch. Dent, FFD RCSI

Dr. O’ Neill graduated from her Oral Surgery Specialist training with a First Class Honours. She was awarded a Fellowship of the Royal College of Surgeons Ireland, in Oral Surgery, the same year. Marie has a particular interest in the prevention of post- operative pain following oral surgery procedures, such as wisdom tooth removal, and this was the topic of her Doctoral Thesis while in Trinity College Dublin.

Dr. O Neill is a Consultant Oral Surgeon at the Mater Private Hospital Dublin, and the Bon Secours Hospital Dublin. She is a registered Specialist Oral Surgeon with the Irish Dental Council.

She runs her specialist Oral Surgery practice from The Institute of Specialist + Cosmetic Dentistry , the Mater Private Hospital and the Bon Secours Hospital in Dublin.

Dr O’ Neill is a fully participating member of VHI, Irish Life Health, LAYA Healthcare and the Garda Medical Scheme.



Bachelor of Dental Science, University College Cork, 2007


Membership of the Faculty of Dentistry, Royal College of Surgeons in Edinburgh, 2009

Diploma in Conscious Sedation, Trinity College Dublin, 2011
Doctorate of Dental Surgery (Oral Surgery), Trinity College Dublin, 2014
Fellow of Faculty of Dentistry (Oral Surgery), Royal College of Surgeons in Ireland, 2014


I had multiple treatments with Dr. O ‘Neill , and I have to say I cannot recommend her highly enough. The care I received was beyond what I had ever expected. During my consutlation I was given all of the options available to me and what would be the best course of treatment. Dr. O ‘Neill suggested bone grafting and multiple implant placement, and at every stage of the process Marie made me feel at ease. I was apprehensive prior to surgery but it went by so quickly, she did an amazing job, I couldn’t believe how comfortable the whole experience was! I could not be happier with the result and the care I received. I have Marie to thank for getting me a few steps closer to a new confident smile.

Claire, 38, Dublin

Dr. O’ Neill, thank you for your exceptional care.
Mary, 45, Dublin

Thank you Marie, Sarah, Ruth and team. I needed some emergency treatment and was extremely well looked after. Ruth shuffled around appointments swiftly and kindly answered my 100 million questions while Sarah was angel sent to keep me calm and informed of what was happening. She was empathic and caring to me pre and post surgery. Thank you so much for looking after me so well, the care and attention that was shown to me meant I knew I was in safe and capable hands. What an amazing team!


Marie Thank You so much for the care after my surgery and for everything you’ve done.

Jennifer, 34, Dublin

I cannot rate IS+CD enough. I’m a week and a half post procedure and had three wisdom teeth removed at the clinic. Dr O’Neill put me at ease from initial consultation, went through all the risks and answered all my queries. I was keen to get the procedure over with but had limited availability due to my own schedule and the clinic kindly put me on a cancellation list and rang me every time a spot became available. On their third attempt I accepted an early appointment. The staff at the clinic were just so amazing from the moment I arrived, special mention to Joyce and Sarah who looked after me so well pre and post op. They are so thorough and go through everything with your designated person bringing you home. Sarah rang me within 36 hours of the procedure to check in. These things are never enjoyable to have to do but the clinic made the entire process seamless, and as painless as possible. Well done guys, see you in a few years for my dentures!

I was in with you on Friday and had three wisdom teeth removed. I just want to say a big Thank You as you did an amazing job. I don’t remember much at all, which is great! And there was practically no recovery afterwards, I feel so blessed as all I’d heard were horror stories!
Shammay, 28, Dublin

Thank you so much for looking after me. You made me feel completely at ease and explained everything very clearly. I can’t remember a single thing about having my wisdom tooth removed thanks to the sedation. It makes me regret having put if off for so long – you made it so easy!
Kieran, 32, Dublin

I recently had two wisdom teeth removed in the clinic and I can’t rate the staff highly enough. I was very nervous on arrival but Sarah put me right at ease. From start to finish both Sarah and Marie were fantastic. They are both so professional and caring they nade the entire experience seamless. I would highly recommend them to anyone.

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High quality and affordable dentistry in a modern, comfortable and friendly setting in the heart of Dublin.