SDI Dental SDI Limited is primarily involved in the research and development, manufacturing and marketing of specialist dental materials. SDI’s products are a combination of innovation and excellence to provide the ideal restorative materials for the dental profession. All of SDI’s products are manufactured in Victoria, a state in the south east region of Australia. SDI’s products are sold through distributors and retailers in over 100 countries throughout the world. SDI has offices and warehouses in Chicago, USA; Cologne, Germany; and Sao Paulo, Brazil. Founded in 1972, SDI is fast becoming a world leader in specialist dental materials and in 1985, SDI was publicly listed on the Australian Stock Exchange.