Our Team of Dentists in Ottawa

We are extremely proud of the team we have assembled. We all share in the commitment to provide exceptional dental treatment and customer service to every single one of the people that entrust us with their care.

Clinically, the driving force behind our decisions stems from a holistic approach. We are mindful of the relationship between the teeth, the gums, the bone and the rest of the body. Simply put, we strive to optimize and maintain oral and overall health. With the new materials, techniques and technologies available, we can fully embrace the artistic side of our profession and create stunning smiles without ever compromising on the quality of care.

We see the impact that a healthy, radiant smile has on our patients’ lives on a daily basis and this has reinforced our commitment to the advanced clinical approach that allows exceptional aesthetic dentistry to be achieved. Our team calls upon their years of continuing education and experience to consistently deliver healthy and natural-looking smiles.

From the point of view of overall experience, we are committed to making our patients’ time with us as relaxing, convenient and welcoming as possible. We work continuously on improving that experience by listening to what our patients say and putting into place the recommendations that help make our practice be as good as it can be!

Our shared vision was put into place by Drs. Prehogan, Dr Rosenberg and Lewinshtein. They incorporated the lessons from their dozens of years of collective practice experience into the philosophy that guides all of our efforts.
A large part of our philosophy is built around the concept of personal care. We enjoy having the opportunity to get to know each and every one of our patients, and conversely, having them get to know us. To help that process along, we have dedicated some space here to introducing ourselves.

Dr. Lewinshtein

Dr. Samuel Lewinshtein is an Ottawa dentist and wood-turner. A graduate of the University of British Columbia’s dental faculty, Dr. Lewinshtein also holds a bachelor of science from McGill University. He was awarded a fellowship in the Academy of General Dentistry in 1984, and is a member of CDA and the Ontario Dental Association.

In his leisure time, Dr. Lewinshtein is a wood-turner. Working on a lathe, he creates beautiful objects such as bowls, vases, hollow forms and sculptural turnings made of wood. He uses a variety of local timber, including maple, yellow birch and cherry, and has a particular interest in “burls,” which are irregular growths on tree trunks that display the remarkable beauty of the wood’s grain.

A number of Dr. Lewinshtein’s pieces have won prizes in wood-turning competitions. He considers wood-turning to be an extension of the art and science of dentistry.

Dr. Harris Prehogan

Dr. Prehogan received his DMD from the Boston University Goldman School of Dental Medicine in 2007, and his B.Sc from McGill University in 2003.

His lifelong passion has been dentistry and he realized that at a very young age when he helped out at his family dentist’s office helping to sterilize instruments and welcome patients. After earning his DMD, he moved back home to Ottawa to begin working in private practice and has culminated today in building his dream practice in Downtown Ottawa.

Dr. Prehogan is a firm believer in continuing education and lifelong learning. His most recent qualifications include CEREC (chairside economical restorations of esthetic ceramics). This technology allows him to offer single visit dentistry to his patients using CAD CAM (computer aided design/ computer assisted manufacturing) to design a tooth (crown and partial crown) without impressions and temporary crowns involved.

Dr. Prehogan enjoys all aspects of General Dentistry including restorative, endodontics (root canals), periodontics, orthodontics (Invisalign braces) and Implantology. He believes that his profession is truly about relationships and his patient centered approach allows him build trust and relationships to work towards a common treatment goal.

Dr. Prehogan is an active member of the Ottawa Dental Society Emergency Service and the Ontario Dental Association . He is also a member of several study clubs including Cerec Doctors, which is an online learning tool for CEREC users.

In his free time, Dr. Prehogan enjoys spending time with his Wife and two Sons.


Dr. Jaspreet Wirring

Dr. Wirring completed her Bachelor’s Degree in Biological Sciences at the University of Alberta and her DMD (honours) from the Henry M. Goldman School of Dental Medicine at Boston University.

She enjoys getting to know her patients while helping them reach their dental health goals, whether that includes pain management, overcoming dental anxiety or achieving a brighter smile. The world of dentistry can be a daunting and overwhelming experience, however, Dr. Wirring is committed to educating her patients so that the journey to dental health is achieved with clarity together. Patient care, patient relationships and patient needs are at the core of her practice.

Dr. Wirring is also certified to provide dental care with nitrous gas for especially nervous patients. She enjoys all aspects of general dentistry and strives to continue to learn all cutting edge techniques in dentistry to continue to serve her patients to the best of her ability.

Outside of the office, Dr. Wirring enjoys teaching at Algonquin College, instructing Tai Chi based yoga, and loves to be outdoors with her husband and dog, Dino.

Dr. Demetrius Dalios

Dr. Dalios grew up in southwestern Ontario. He attended the University of Western Ontario where he first completed his Honours Bachelor of Science degree in Physiology in 2001 before earning his D.D.S. degree [Doctor of Dental Surgery] in 2005.

Dr. Dalios’ philosophy is focused around the patient’s comprehensive care to optimize each individuals’ oral health and subsequently overall health.

He continues to expand his knowledge into areas of dentistry that allow him to provide the highest standards of care to his patients. He has followed a rigorous curriculum in the fields of Neuromuscular and Aesthetic Dentistry. Completing this rigorous curriculum has enabled him to focus on his passion of full mouth rehabilitation as well as cosmetic dentistry.

Dr. Dalios has also extensively studied the science of Sleep Medicine and enjoys helping people that suffer from sleep apnea, snoring, or other sleep breathing disorders. He has expanded his knowledge in the area of laser dentistry and has completed courses in laser dentistry that allow him to use this technology for a wide range of services ranging from the restoration of teeth to performing simple periodontal surgeries.

In 2013, Dr. Dalios completed the prestigious dental implant curriculum at the Misch International Implant Institute. He earned his Fellowship from the International Congress of Oral Implantology shortly after.

Apart from consistently pursuing his continuing education, Dr. Dalios is an active member of the dental community with memberships in a wide range of Canadian and American dental associations.

Maisoun - Office Manager

Maisoun is the friendly face that can be seen the minute you step foot into the centre. She is the first to greet you with a smile, answer any questions or make special arrangements to ensure that your experience is a positive one.

Although she works as our office manager, her experience in the dental world extends to the clinical side as well. She started her career as a dental assistant and progressed into the administrative and managerial side. Her understanding of both the clinical and administrative sides of our industry make her an invaluable asset for both our team and our patients.