About Dublin Orthdontists

About Dublin Orthodontists

Dr Claire O’Sullivan is from Glasgow and was trained as a  Dentist in Glasgow University, after a few years working as a house officer in other dental schools in the UK and Ireland she decided to specialise in Orthodontics, Claire returned to Glasgow to carry out her postgraduate education in Orthodontics and qualified in 2003 with her degree in Orthodontics allowing her to become a registered specialist Orthodontist with the Irish Dental Council. Since then she has worked in the HSE as an Orthodontist and in private practice. Working in the HSE gave Dr O’Sullivan a wealth of experience. The patients that are accepted in the HSE tend to be more severe cases and this left her with the ability to treat any orthodontic case.

Dr O’Sullivan has a keen interest in functional appliances which are braces that are used on young children whilst they are still growing. These braces improve the attractiveness and balance of the face, for this reason, Claire likes to see children from age 9 years upwards as recommended by the American Association of Orthodontics. Dr O’Sullivan decided to move solely into in private practice after working with the HSE for 10 years she left to dedicate herself to a private practice she started in the dental practice D11 in 2007. She has been in the College Gate Clinic since 2013 and has enjoyed building her private practice which is built mainly on word of mouth by happy patients. Claire works closely her Orthodontic Therapist Sarah who she has trained in conjunction with Trinity Dental School. She is dedicated to her patients and practice and looks forward to meeting you and your child to start your orthodontic journey.  

Dr O’Sullivan works in solely in private practice at the College Gate Clinic since 2015 and she looks forward to welcoming you there with her expert team of dedicated professionals.

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Dr. Claire O'Sullivan


Our Facilities

The College Gate Clinic is a multi-purpose building which is run by Dr O’Sullivan and her husband David Ahern. The clinic has many services within the beautiful Georgian building there are:

1. Doctors 
2. Dentists 
3. Physiotherapist 
4. Psychotherapist 
5. Medical Herbalist 

There is parking on site and also nearby. We are located next door to the Chambers Pharmacy and the Slipper pub. We are also very close to DCU we provide special discounts for students.

Meet The Team

Erica Flynn

Dental Nurse

I qualified in 2014 as a dental nurse and I have worked in general dentistry and orthodontics since then. I am bubbly and outgoing. I love chatting to the patients.

Sarah Dempsey


I have worked with Dr O'Sullivan since 2014 during. I have completed many courses to further my education including casting of models,making retainers which were part of my Orthodontic nursing qualification. I secured 1 of 8 places in Trinity College on the Orthodontic Therapy course which enables me to carry out treatment under the instruction and supervision of Dr O'Sullivan.

Angelika Otworoska


I am originally from Poland but I have been in Dublin since 2003. I have worked as a dental nurse and a receptionist. I have a passion for healthy eating and living. I am currently exploring my interest in this by taking a part time course in Dietetics & Holistic Nutrition in Irish Association of Holistic Medicine.

Get in touch to book your consultation. Make an appointment or call us on our mobile number 0871515420  for more information.

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kate linanne logo

Love my new teeth. Just got my braces off and can’t thanks Claire enough. Totally recommend Dublin Orthodontist.


Thanks Dublin Orthodontist. Claire you are AMAZING so happy how my teeth turned out. Can’t stop smiling…

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