The Department of Dental Materials Science of the Academic Centre of Dentistry Amsterdam (ACTA) has it’s own English website. The department is responsible for research and teaching in dental materials science. Websites about dental materials on the internet are rare. One will not find reports about certain brands on the site of this Department either. However, very interesting information on the characteristics of dental materials, which have to function as replacement of lost tooth structures in practice, is available. No website anymore