Dental Staff

Dr. Joseph Lasko

Dental Anesthesiologist

Dr. Lasko has been practicing dentistry for 35 years.

Since 1980, his Orangeville Dental Practice has been focused on providing safe and effective Sedation Dentistry (Anesthesiology), Sleep Dentistry and Cosmetic Dentistry.

Dr. Lasko is one of 40 Dental Anesthesiologists in the province who has an advanced education, background and certification in Sedation Dentistry. His Orangeville clinic is fully certified by the Province of Ontario to provide a full spectrum of anesthesiology, from local anesthetics to fully sedated anesthesiology. Overall, his advanced anaesthesia safety record is unsurpassed in today’s healthcare industry. Pain is a major factor that keeps people from visiting the dentist. Sedation Dentistry can help overcome this barrier.

Dr. Lasko also provides a variety of Cosmetic Dentistry services, including dental implants, orthodontics (Invisalign), veneers, bridges and crowns.

Dr. Lasko is also specialized in treating issues stemming from snoring and sleep apnea. The Sleep Dentistry part of his practice, within this area he provides simple dental appliances that help restore normal breathing during sleep.

Visit Dr. Lasko and his trained staff for a complimentary consultation today. His clinic provides a safe and relaxed atmosphere where pain and anxiety are controlled and managed to our patients’ full requirements and expectations.


Dr. Loris Corazza

Dr. Loris Corazza completed his dental training at the Faculty of Dentistry, University of Western Ontario and upon his completion, he went on to complete a residency program at the Toronto General Hospital. Following this, Dr. Corazza became an associate in Orangeville Ontario and works in this practice on Wednesdays. He also works in Brampton as the principal dentist of Brinkley Dental Group. He maintains a family practice dedicated to improving oral health and the quality of life for his patients. His practice offers general and cosmetic dentistry to help enhance and brighten your smile. Dr. Corazza continues to strive to improve the quality of care and level of education for our patients. Dr. Corazza is married to Pauline, and they have 5 wonderful children. In addition to his dedication to dentistry, he enjoys spending time with his wonderful family, exercising and cottage living.


Dr. Tejus Raval

Dr. Tejus Raval, was born and raised in London, Ontario where he obtained his Bachelors of Science and Doctoral of Dental Surgery degree from the University of Westen Ontario.  Later, he completed additional Advanced Training in Surgery and General Practice Dentistry at London Health Sciences Centre  focusing primarily on advanced surgical and hospital-based dentistry.  During this time, Dr. Raval worked part-time as a clinical instructor at the University of Western Ontario, department of Emergency Dentistry, Pediatrics and Oral Surgery.

Dr. Raval graduated as dental school class president in 2001 and was later awarded the prestigious Canadian Dental Association President's Award for Excellence in Clinical Dentistry.  Today, he continues to enjoy practicing general and family dentistry at the office for all of his patients, but has a strong focus on patients requiring Implants, advanced bone and soft tissue grafting and reconstruction, Esthetic and Cosmetic dentistry, sedation and helping patients overcome their fears with the Sleep Dentistry Centre. He has been practicing dentistry for 15 years.

Currently, he belongs to:

International Congress of Oral Implantologists
Academy of General Dentistry
Toronto Implant Institute

Headwater Dental Society
Ontario Dental Association
Royal College of Dental Surgeons of Ontario


Dr. Samson So, BSc., DDS

Dr. Samson So was raised in Markham, Ontario and received his Bachelors of Science and Doctoral of Dental Surgery at the University of Western Ontario. During his training, Dr. So travelled to Moose Factory Indian Reserve and Guatemala where he provided dental care to underserviced populations

Dr. So has advanced training in Invisalign Orthodontics and PinHole Gum grafting. He is committed to making each visit positive, pleasant and an educational experience for his patients. Dr. So looks forward to meeting all the wonderful patients and families at Heritage Dental Centre and will work hard to help you with all your dental needs and keep you smiling!