Great Lakes Dental Technologies is an employee-owned company, with 225 employee-owners who design, develop, manufacture, and market appliances and products for use in the orthodontic, dental, and sleep and airway markets.Great Lakes is one of North America's largest orthodontic laboratories and offers more than 4,000 products and services. Training and education on the latest appliance fabrication techniques and equipment is offered at the onsite training center in the company's headquarters; located in a modern 78,000 square-foot building in Tonawanda, New York, a suburb of Buffalo.