Dr. Diston received his Doctorate of Dental Surgery from the University of Toronto in 1986 and a Masters of Business specializing in Human Resource Management from Brock University in 2011.

In addition to a full-time practice in general dentistry, his enthusiasm for team development and practice planning has been invaluable in his role as General Manager of Glendale Dental Centre.

Outside of his business interests, his passion for family, travel, sports and theatre provides an entertaining balance to his personal and professional life.

Dr. Ian Tester received his Doctor of Dental Surgery degree in 1982 from the University of Toronto after studying Life Sciences at Queen’s University in Kingston. In 2004 he completed the requirements for a Master of Science Degree in Dental Sciences (Donau University, Krem’s Austria).

Dr. Tester emphasizes complete diagnosis and individualized treatment plans for each of his patients. Esthetics and oral rehabilitation are his main practice focus.

Dr. Tester’s enthusiasm for dentistry is matched by his passion for his family and the wonderful times they share. He enjoys hiking, cycling, golf, art (various media) and travel with his wife Nancy.

Dr. David Janzen graduated from Case Western Reserve University with his Doctor of Medical Dentistry degree in 2004.  He joined the team at Glendale Dental Centre at that time and has been offering a commitment to treating patients with compassion and care ever since.

Born and raised in Niagara, he has a strong connection with the community personally through our local music scene.  Professionally, his passion for outreach in our community is fulfilled by volunteering his dental services at a local healthcare centre.

Family life on a small hobby fruit farm in rural St. Catharines provides the perfect balance to his professional events and commitments.

Dr. Slamka is passionate about dental education and wants her patients to feel involved in their dental care + decision making process. She enjoys all areas of General Dentistry, but is specifically interested in working with family groups. She excels in making her patients feel comfortable + confident at every appointment.

Having been raised in St. Catharines, Dr. Slamka is thrilled to be back in her hometown and practicing dentistry surrounded by her family and loved ones. When not immersed in her profession, she loves trying different restaurants within the community, playing soccer, and crocheting in her spare time.

After receiving a Bachelor’s of Science from Queen’s University (and graduating on the Dean’s honour list, with distinction), Dr. Keresztes attended the Faculty of Dentistry at the University of Sydney.

 Dr. Keresztes is enthusiastic about continuously broadening his scope of experience; and what he loves most about his job is “a good mix of personal and professional relationship between patient and dentist. From the first meeting ongoing, it’s important to establish trust between patient and dentist. Glendale Dental Centre gives us the opportunity to work in a place where trust and familiarity between patient families, and our family at the practice, is built over time. This is the basis of a good, long-term dental relationship.”