The best standards in Dental Care


Dr. Billy Waters BSc, HDipAppSc, BDS, MFD (RCSI), MSc (Implant Dentistry)

Dr Billy Waters started as a scientist graduating with a Biomedical Science degree in 1998, and completed a postgraduate higher diploma in 1999. Developing his interest in matters medical he studied dentistry in UCC graduating with honours in Dental Surgery in 2004. While working in general dental practice he undertook postgraduate dental studies being awarded MFDS by the Royal College of Surgeons in 2009. During this time he developed an interest in dental implants and undertook a Masters in Implant Dentistry at the University of Warwick graduating in 2011. During this time he treated patients in Prof. Stuart Harding’s dental implant suite in Harley Street, London. He and his associates operate a  general dental practice at the Cork Dental Clinic.

When not working in general practice Dr Waters operates a specialist dental implant practice at the Cork Dental Implant Clinic in Cork. He also maintains close links Cork University Dental School & Hospital where he works as a clinical tutor, and continues to work closely with Prof. Duncan Sleeman in his implant work.

Dr. Marian Cottrell BDS, NUI. MFDS, RCS.

Dr. Marian Cottrell graduated with honours from U.C.C. in 2010. Best Overall Student Award and Oral Surgery Award. Before returning home to Cork she spent three years working in General Practice in London. Whilst working there she completed a course in Surgical and Implant Dentistry in the Eastman Dental Institute, London. She has also completed various aesthetic dental courses in the London Dental Eduction Centre. Dr. Cottrell was awarded a MFD from the Royal College of Surgeons in 2013.

Dr. Marian Cottrell started in Cork Dental Clinic in 2013. She focuses on providing a high standard of clinical care to her patients in friendly and comfortable surroundings. Dr. Cottrell provides tailored examinations and treatment plans which are specific to patient concerns, especially nervous patients. She is happy to take the time to explain and plan various treatment options for each patient. Dr. Cottrell prioritises patient care and clinical need.

Dr. Cottrell is committed to continuous professional development and frequently attends lectures and courses around Ireland and in the UK. Dr. Cottrell also assists Dr. Waters on some of his complex implant cases.

Outside of practice Marian enjoys playing camogie and keeping fit. Marian has also completed dental charity work in Ghana.

To see some examples of Dr Marian Cottrell’s work go to

Dr. Divya Sweeney BSc(UniMelb), BDS(NUI).

Dr Divya Sweeney graduated from the University of Melboune with a biomedical science degree in 2012. She wanted to be a dentist since she was 16 and managed to fulfil her dream by graduating from UCC with honours. During her degree, she received the Henry Schein award for endodontics and the NUI Dr H H Stewart medical scholarship.

After a number of years of working in the beautiful Kerry countryside, she returned to the real capital to pursue advanced techniques in dentistry opening the doors to facial aesthetics and implantology.

Dr Divya Sweeney has completed further training in anti-wrinkle injections in the London School of facial aesthetics and is our in house facial aesthetics provider. She joined our practice in 2021 and is currently pursuing a post graduate diploma in aesthetic dentistry.

Dr Divya is great with nervous patients, taking her time to ensure that making her patients feel at ease during their treatment. In her free time, she loves running, hill walking, sea swimming and of course trying to chase after her dog Rua..

Dr. Annie Downey BDS, NUI.

Annie graduated from University College Cork with a bachelor of Dental Surgery in 2012. Having spent some time working and travelling in Australia, Annie moved to Liverpool where she worked in both private and NHS practices for 2 years, before returning back to Ireland in 2015.
Dr. Downey has joined our team as a general Dental Practitioner and is working as Marian’s associate, and will be working on a range of procedures at our clinic including general and cosmetic dentistry.



Dr. Kevin O’Rourke, BDS N.U.I MFDS(Dub) M. Orth(Edin) D Clin Dent(ortho)UCC

Dr Kevin O’Rourke graduated in dentistry from UCC in 1986. He has practiced dentistry in the South of England, France and the West of Ireland.
Since 2001 he has restricted his practice to Orthodontics. Having passed the fellowship exams he has since completed a three year full time postgraduate programme. His thesis was on the perception of anterior smile aesthetics. Dr O’Rourke has been awarded both the membership in Orthodontics by The Royal College of Surgeons of Edinburgh and a doctorate in Orthodontics by University College Cork.
Dr O’Rourke uses the most advanced techniques available to produce beautiful and healthy smiles in a caring environment.


Donna Barry, Head Dental Nurse

Donna has over 17 years of nursing experience and qualified with a diploma in Dental Nursing from Cork University Dental Hospital in 2002. She continues to be an indispensable part of the Cork Dental Clinic Team. She displays excellent organisational skills and a is a specialist nurse to our visiting orthodontist Dr. Kevin O’Rourke. Outside of work Donna is a busy mother to her son and enjoys keeping active. We’d be lost without you, Don!


Sonya Cronin, Dental Hygienist

Sonya graduated as a Dental Nurse in 2009 from Cork University Dental School and Hospital. After spending a year dental nursing in a specialist clinic in Australia, she was inspired to further her studies from working closely with a Periodontist.
She graduated with Honours as a Dental Hygienist in 2014 from Cork University Dental School and Hospital. Sonya joined our team in May 2016 and has been a wonderful addition to the practice.
She has a keen interest in periodontal disease treatment and implant maintenance. She especially encourages nervous patients to attend, as her understanding and helpful nature makes for a pleasant experience.
In 2015 she was a monthly contributor to Irish Dentistry Magazine, and regularly attends dental conferences and lectures.
Outside of work, she enjoys keeping fit.

Lisa Kelly, Dental Hygienist

Lisa graduated with a Dental Nursing Diploma at Cork University Dental School and Hospital in 2014. She joined Billy before graduation, having completed work experience throughout secondary school and college with us, and has become an invaluable member to the team. Her role is now as a hygienist after graduating with first class honours in 2021. Her caring rapport and reliability makes her a hit with patients and staff alike.