Our Team

Learn about the D4 Dentist team.

We are a team of dedicated professionals, here to help.

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Dr Rozelle Owens
BDS (Hons) NUI; MSc, PG Dip, PG Cert, KCL; Dip PC RCSI; BA NUI; MEconSc NUI

It is thought dentistry is vocational and as Rozelle comes from a dental family, being the 3rd generation of dentists, it must be in the blood.

Rozelle qualified in Dentistry from University College Cork.

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Starting her career as an associate dentist, gaining valuable experience and training. Rozelle has continued to show passion in her practice with continual professional development; she gained a Master’s degree in Aesthetic Dentistry from Kings College London graduating in 2022 that has allowed her a complex understanding of dental care. Starting the Masters in 2017, having her 2nd child within this time along with running a business and COVID made finishing a little bit slower! She enjoys cosmetic dentistry offering Invisalign, composite or porcelain veneers.

Rozelle works to the ethos that every patient deserves a full and healthy dentition; she works very hard to teach her patients that their dental health is paramount to their overall health. She believes in prevention and tooth preservation, following the principles of biomimetic minimally invasive dentistry. Always using best practices and working with care and precision, nothing is ever rushed. Each treatment is planned and executed to ensure the best possible outcome. She enjoys a good transformation case where she can join her patients on their dental journey, to dental health and a beautiful smile they can be proud of.

Rozelle is constantly learning and more recently engaging in implant dentistry to offer her patients a full suite of dental care.

In 2015 she took over her father Paul Owens’s practice, D4Dentist. A new start deserved a new fresh overhaul and D4Dentist was transformed with complete renovation making it a state of the art, modern dental facility. She is a hard task master to make sure that the patient journey and the standard of care in D4Dentist is always high quality.

Rozelle also has a young family and is a devoted mother, juggling home, and business seamlessly. She also loves staying fit and works out often.

Dr. Nina King
B.D.S (Lon.); M.F.D.S (RCS Ed.); MClin. Dent Pros (Lon.), M.R.D (RCS. Lon)

Dr. Nina King’s dental career spans over 25 years and she has been working primarily as a
specialist prosthodontist for the last 15 years.

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She completed her undergraduate and postgraduate education with distinction at The Royal London Hospital, King’s College and the Royal College of Surgeons in London, England to gain her specialist recognition in the UK in

Throughout her career, she has been fortunate to have worked in many prestigious practices internationally including England, Barbados and Dubai. She also collaborated with a renowned plastic surgeon in Marbella, Spain, where she ran her own clinic for the past decade.
Her work consists of providing solutions for adult patients who may be embarrassed by their smiles and /or unable to chew properly with related jaw issues. As such, her focus is on health, function and of course aesthetics to provide harmony and stability.

She offers a wide range of treatment options following the principles of minimally invasive dentistry with a focus on long term prevention and maintenance. She is known for her gentle and thorough approach, making sure patients feel comfortable from the initial consultation and treatment planning stages and throughout treatment.

She remains committed to keeping up to date with advances in digital dentistry and materials and techniques so she can provide her patients with the best options for them. She is also involved in training other dentists and currently holds a part-time position at the Dublin Dental Hospital.

Jana Makarenko
RDH Hygienist

Jana is a Dental Hygienist with more than 4 years of professional experience. Originally from Latvia and in 2021 relocated to Dublin with the intent of furthering her career.

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Since graduating, Jana has worked in various dental clinics, initially working as a dental nurse before advancing her career as a dental hygienist. Gained valuable experience working with patients of all ages, with a special focus on children.

She is curious and enthusiastic about sharing knowledge with patients, guiding them on effective oral health maintenance and the prevention of periodontal diseases. Jana consistently engages in continuing education, attending seminars and courses to stay updated with the latest developments and information in dental hygiene.

Outside her professional life, she likes to spend quality time outdoors, playing tennis, travelling and hiking.

Barbara Tomaz
Practice Manager

Barbara is originally from Portugal and has been in Ireland since 2014. Her background is in marketing and communication with over 15 years of experience as an account executive, working in various fast-paced office environments, managing multiple clients and brands.

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After a break to focus on her family, she decided on a career change which brought her to D4Dentist in November 2020.

Barbara is passionate about her work and thrives on providing the best patient care and service. She is responsible for the smooth running of the practice and making sure everyone in the team work as one. She enjoys liaising with patients ensuring their dental needs are met and they leave the practice with a smile.

When Barbara is not working she likes to spend time with her family and friends and watching a good movie!

Sofia Rivero

Sofia is originally from Venezuela where she worked as a dentist. She been living and working in Ireland as a dental nurse since 2018. With a passion for clinical dentistry and a commitment to excellence. Sofia is an invaluable member of the team.

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Sofia completed her Dental Nursing training in the Dublin Dental Hospital in 2022, where she honed her skills and gained valuable experience working in a fast-paced, dynamic environment. She has a strong interest in providing top-notch care to her patients, and she takes great pride in her ability to work in a team to deliver exceptional results.

Outside of her professional life, Sofia is a devoted family woman who enjoys spending time with her loved ones. She is an avid sports fan and loves nothing more than getting outside and participating in a variety of athletic activities.

Hana Tesarikova

Hana graduated as a dental nurse from a full time Dental Nursing Diploma course in Trinity College in 2018. During her studies she began to gain valuable experience and extensive knowledge in all areas of dentistry, from HSE dental clinic to private practice.

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Her career started in the CSSD department of the Dublin Dental Hospital University and then moved onto a private practice.

She joined our team in August 2022 and works hard at making patients feel at ease during their treatments. Hana also attends Infection Prevention and Control courses to stay on top of current policies and procedures and to ensure patients are receiving the highest standard of care every day.