SDI Limited engages in the research and development, manufacture, and marketing of dental restorative materials, whitening systems, and other dental materials in Australia. It provides adhesives, alloys, cement, composites, etchants, glass ionomers, sealants, and tooth desensitizing agents and whitening products, as well as equipment and accessories. The company sells its products through distributors, dealers, and dentists worldwide. SDI Limited was founded in 1972 and is headquartered in Bayswater, Australia.