Justin Marks is the owner of Master-Touch Dental Laboratory in Oceanside, New York - the world's first Valplast laboratory. Marks is a Certified Valplast Technician and Instructor and consults regularly to Valplast as Technical Director and Trainer. Marks has lectured and taught courses on Valplast RPD design and fabrication techniques in more than forty countries including the USA, Canada, Germany, Italy, Great Britain, China, India and South Africa. He is known throughout the world as an authority on flexible partial dentures, a technology that was pioneered by his grandfather Mr. Arpad Nagy, CDT, in 1953.