Dentistes Prisma » Team
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. 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. Jean Piché
He holds a DDS from l’Université de Montréal as well as North American (Canada and US) patents in implantology. He is the founder of Piché et associés dental centres and has a multidisciplinary practice specializing in orthodontics and implantology. He focuses on oral health and his patients’ comfort, as well as painless interventions. He is a founding member of the Club d’Étude des Généralistes en Orthopédie et Orthodontie (C.E.G.O.O), and is also a member of the International Association for Orthodontics and the American Academy of Cosmetic Dentistry. Dr. Piché holds a certificate in implantology from the Brånemark Institute and is a father of two boys. He enjoys sports and travel, and spends his free time skiing, playing golf and sailing.
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.
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.
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. Marina D’Souza
Dr. Marina D’Souza has a degree in Dental Medicine from McGill University. She completed a multidisciplinary residency at the Queen Elizabeth Oral Health Centre, where she had the opportunity to work alongside a multitude of experts in several fields of dentistry. She has practiced privately since 2013, and is always on the lookout for new technologies and dental technologies.
Dr. D’Souza embraces continuous learning and has taken additional training and education to deepen her knowledge of dentistry and to keep herself current. Because of her profound interest in oral surgery, she successfully completed a degree in implantology from the International Dental Implant Association in 2016. Today, she is now a member.
She also has experience in geriatric dentistry and provides dental care in residential and home care centres to people with mobility challenges or severe illnesses. Dr. D’Souza is very passionate about her work: she is both a clinician at McGill University and Co-Director of the McGill Mobile Dental Clinic program, which provides dental care to people in disadvantaged neighbourhoods. She is a member of the Ordre des dentistes du Québec as well as several professional associations, including the Association des chirurgiens-dentistes du Québec, the Canadian Dental Association, and the Academy of General Dentistry.
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.
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 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 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 – 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.