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A team dedicated to the well-being of patients

Our team is made up of dentistry and oral health professionals who share a desire to improve the smile and well-being of their patients.

Dr François Lechner

Dr. François Lechner

Dr. Lechner is the founder of PRISMA DENTISTES and has worked in the field of dentistry for over 30 years. Mastering all aspects of general dentistry, Dr. Lechner developed an interest in sleep disorders and in neuromuscular dentistry. He has a distinct vision of his profession through his research on the links between the temporomandibular joints, occlusion and posture, which he shares with the professionals working alongside him. He is a graduate of l’Université de Montréal, and continuously learns by taking courses and attending conferences all over the world. Dr. Lechner is involved in various associations, such as the Ordre des dentistes du Québec, Association des chirurgiens dentistes du Québec, American Academy for Sports Dentistry and American Academy of Dental Sleep Medicine.

Dr Steven Krychman, parodontiste

Dr. Steven Krychman, Periodontist

A seasoned periodontist, Dr. Steven Krychman has more than 20 years of experience in dentistry. Holder of a DDS (Doctorate in Dental Surgery) from McGill University and a certificate in Periodontology from Tufts University in Boston, he is a member of the Association des parodontistes du Québec, Canadian Academy of Periodontists and American Academy of Periodontology. Always keen to keep his knowledge current, Dr. Krychman stays abreast of new developments that could improve his practice. He is empathetic and caring, and this noble-hearted man is involved in many ways in the Montreal Association for the Blind and the Mackay Center. When he is away from his patients, he can be found on a golf course where he plays with surgical precision.

Dre Hélène Buithieu, pédodontiste

Dr. Hélène Buithieu, Pedodentist

Dr. Buithieu is a Fellow of the Royal College of Dentists of Canada and has more than 20 years of experience in paediatric dentistry. She holds a Master’s degree in dental sciences, a certificate in paediatric dentistry and has taken several continuing education courses. She serves as an Associate Professor at the Faculty of Dental Medicine at the Université de Montréal, and is a proponent of pain-free dentistry. She leverages her knowledge, tact and warmth to educate children about dental health without preaching, a gentle approach that is appreciated by the young and old alike. This mother of three also loves tennis, running, cycling, telemarking and skiing.

Dre Lisa Sapatis

Dr. Lisa Sapatis

Dr. Lisa Sapatis obtained her dental degree from McGill University in 1999, and completed a multidisciplinary dental residency program at the Royal Victoria Hospital.

She has been a member of the team at Prisma Dentists since 2015.

She received extensive continuing dental education at the renowned Dawson Academy and with Spear Education, where she developed expertise in occlusion, management of TMJ disorders, cosmetic and restorative dentistry, and implant restorative dentistry. She received training at the C.L.E.A.R Institute and with Align Technology, and offers minor orthodontic treatment with Invisalign aligners. She has also received advanced training and certification at in the management of sleep apnea with oral advancement appliances.

Dr. Sapatis is a member of the Order of Dentists of Quebec, the Canadian Dental Association, the Montreal Dental Club, the Spear Study Club, the International Team for Implantology (ITI), and the American Academy of Dental Sleep Medicine.

“I am committed to providing patients with high quality, comprehensive and personalized dental care.  I value my patients, and take time to listen and educate them about different treatment options, in order to accomplish aesthetic and functional goals through careful planning and execution.”

Dr Bilal El-Masri

Dr Bilal El-Masri

Dr. El-Masri received his Doctorate in Dental Medicine from Laval University in 2021. In order to stay on top of new scientific advances, he also pursued four research projects during his academic years, which led to his selection as a teaching assistant to create a clinical guide to assist the student body. An advocate of cosmetic dentistry and gum surgery, Dr. El-Masri excelled in both disciplines during his clinical years at the university, earning two excellence awards. Before choosing dentistry as a profession, Dr. El-Masri worked as a barber for more than 5 years, a detour that allowed him to develop the empathic listening and manual skills that distinguish his care approach and his dedication to the global well-being of his patients. He invites you to take a look at some of his clinical cases by visiting his Instagram page here.

Dental Hygienists
Fatiha Ait-Amokhatar

Fatiha Ait-Amokhatar

Fatiha enjoys explaining treatment plans and ensuring that her patients know what to do to properly protect their teeth. She speaks French and Arabic, enjoys zumba, salsa and travelling into a good book…and in reality!

Abdoulaye Fofana

Abdoulaye Fofana

Abdoulaye is a graduate of Canadian and French dentistry schools. He is passionate about dentistry in all its diversity, and he dedicates himself to his patients to help them maintain a healthy mouth. Each patient is unique and Abdoulaye makes a point of finding solutions with each one to improve their oral health and well-being. When not at work, Abdoulaye likes to stay active and he loves hiking and jogging.

Ikram Souissi

Ikram Souissi

Ikram was drawn to become a dental hygienist because of the profession’s relational and reason for practice. She earned her degree at the Collège de Maisonneuve. As a member of the Ordre des hygienists dentaires du Québec, she has been working in the field since 2009. Ikram continues to develop her skills and know-how through continuous training. She is much-appreciated by patients for her quality and gentle care as well as her professionalism. She is a fulfilled mother and loves making delicious homemade meals for her family and friends.

Peter Ortez – Responsable du département sommeil et Invisalign

Peter Ortez – Manager of the sleep and Invisalign department

Peter has several years of experience in administration and excels in his position as Manager of the sleep and Invisalign department. Trilingual in English, French and Spanish, he has unparalleled communications skills. He plays a pivotal role in our internal and external operations in dental healthcare. Peter works closely with our partners and suppliers to ensure the utmost quality for our clientele. Patients of all ages appreciate his warm, empathetic approach.

In his spare time, Peter likes to spend time with his family and volunteer with people who are in need. He is a disciplined athlete and is passionate about archaeology and science fiction.

A personalized approach

Our team fosters a global approach to your oral health. We listen to your needs and offer you professional services in dental health and dental aesthetics for a lifetime of smiles.