David was born in Valley Stream, New York and studied Biology and Chemistry at Syracuse University. He then moved to Denmark where he initially trained as a Dental Technician before moving on to become a dentist, qualifying from the Royal Dental College in Copenhagen in 1983. David ran his own practice in Outrup, Denmark for 17 years before moving to Windsor where he has been in practice ever since. David is a self-confessed dental geek. He has a passion for everything dental, always investigating new techniques, products and advances in the industry.

David is GDC registered (73879)

Qualification: Tandlaege Copenhagen, 1983

David Winkler DDS     Clinical Director

David was awarded the first life-time honorary membership of the British Academy of Aesthetic Dentistry and now has a yearly honorary lecture in his name at the Scandinavian Academy of Esthetic Dentistry. He and has been President of a number of aesthetic academies including the British, Scandinavian (Founding President) and the European Academy and is the immediate past President of the International Federation of Esthetic Dentistry. When David is not in the practice he can be found cooking and travelling to see his children and grandchildren in Denmark. David speaks English, Danish and American.


Qualifications:  CEB Dip Dent Hygiene Wales, 2001; 
CEB Dip Dental Therapy Wales, 2001

Leanne is a dually qualified dental therapist and hygienist after leaving Cardiff in 2001. She has since gone on to work throughout the UK and Channel Islands teaching and perfecting her craft. Leanne will inform you on the best ways to keep your teeth clean and healthy in between your visits. Leanne has a passionate belief in educationas a powerful tool and will explain any processes allowing you to understand what is available and to make an educated choice.

Leanne Banasko-Lawson     Hygienist/Therapist

Julie is GDC registered (5525)

Qualification: Dip DHE, Guys (1998)

Julie is a qualified dental hygienist after leaving Guys in 1998. She has been working in dentistry ever since, developing her skills. Julie is passionate about patient care and oral health education. Julie joined the practice in 2018 and apart from cleaning your teeth, she will instruct you on the best way to keep your mouth clean and healthy between visits.

Julie Smither     Hygienist

Cathy Winkler     Practice Manager

Cathy, born and raised in New York City, worked in the advertising and financial worlds until the six year long-distance relationship with David came to a tipping point when he popped the question on a holiday in Ireland. At that point she was already his dental patient and then she became his wife. Cathy moved to Windsor where David was already practicing dentistry and where she became the practice manager at a busy dental practice.

Combining that experience with the knowledge she gained going to the many, many dental conferences with David and, of course, her experiences as a dental patient, she hopes to make your experience at CastleView Dental the best it can be. Cathy speaks English and American.

Monique Hunt joined us as an apprentice nurse in November 2019


Melanie Stewart joined us as receptionist in March 2020

 Cristina Daguerre        Dentist 

Cristina graduated in Barcelona in 2008 before spending time working as a general dentist in the Lake District. In 2012 she moved back to Barcelona to study a masters in Orthodontics for three years which included travelling to UCLA to learn the most advanced orthodontic techniques. Afterwards she did postgraduates in Lingual Orthodontics (Incognito) and Advanced Orthodontics to learn the FACE/Roth-Williams treatment Philosophy. Cristina then did a postgraduate in aesthetic dentistry at the Autran Institute with support from NYC. 

Cristina is GDC registered (172932)

Qualification: Lic Odont Barcelona, 2008

Cristina has been an Invisalign provider since 2010 and is constantly keeping herself up to date with the most innovative techniques, attending courses and conferences worldwide. Cristina speaks Spanish and Catalan.           

Agnieszka Fronc (Aggie)          Dentist

Aggie graduated in 2006 in Poland and has worked in the UK since 2010. Providing a full range of general dentistry for adults and children, she is specially interested in minimally invasive aesthetic dentistry and endodontics (root canal treatments). She is also trained and experienced in straightening courses including Cfast and Inman aligner. Aggie is always keeping up-to-date on the latest techniques and increasing her knowlege of dentistry. Aggie speaks English and Polish.

Agnieszka is GDC registered (191506)

Qualification: Lek Dent Bialystok, 2006

Rita graduated in 2002 in Portugal, where she worked until 2017, when she and her family made a life-changing decision to move to the UK. Rita worked at the world-famous Malo Clinic in Portugal. She is experienced in all areas of general dentistry and has a confident yet relaxed approach which is reassuring and calms those who find dental treatment stressful. She has particular interests in preventative and minimal intervention dentistry which reduce the need for the more invasive treatments. Rita speaks English and Portuguese.

Rita is GDC registered (271261)

Qualification: LMD Coimbra 2002

Rita Pais     Dentist

Gabby leads the nursing team at CastleView. After growing up in the Czech Republic, Gabby originally moved to England in 2011 to better her English. Not content with learning a new language, she decided to follow her love for the welfare of people and become a dental nurse. Here at CastleView she flourishes in this passion. Gabi speaks English and Czech.

Gabi is GDC registered (249890)

Gabriela Kadulova     Lead Nurse

Teresa has worked as a dental nurse for nearly twenty years in her native Italy before moving to Windsor. Teresa enjoys working in a team and meeting new patients. Her eagerness to expand her role and responsibilities makes her a more than worthy member of the team. She is currently in her adaptation period here in the UK. Teresa speaks English and Italian.

Teresa is GDC registered (262419)

Teresa Tattoli     Dental Nurse