when, in 1952 Per-Ingvar Brånemark put titanium-encased optical devices into the legs of rabbits to study the healing process. At the end of the research period, after removing the devices, they discovered unexpectedly that the titanium had fused into the bone and could not be removed. He called the process osseointegration. The toleration to long-term presence of titanium led to the potential for new research in using it to create an anchor for artificial teeth. Zamet pursued recognition for periodontology as a UK speciality and played an influential role in the establishment of the General Dental Council's Specialist Register in Periodontology. Other roles Societies He took up responsibilities in numerous societies, including President, Honorary Vice-President and Honorary Life Member of the British Society of Periodontology, a Life Member of the American Academy of Periodontology and an Honorary Member of the American Dental Society of London. Alpha Omega International Dental Fraternity At a time when Jewish students were not allowed to form social groups, a group of Jewish dental students founded The Alpha Omega International Dental Fraternity in 1907 at the University of Maryland School of Dental Medicine, which claims to be the oldest international dental organisation and the oldest international Jewish medical organisation. It eventually incorporated over 100 alumni and student chapters in ten countries. Zamet became the first and twenty-fifth chairman of the London chapter of the Alpha Omega Dental Fraternity, which sponsored numerous projects in the UK and Israel. He also served as secretary of its London Charitable Trust. At one time, he liaised with Walter Annenberg and obtained funding for postgraduate education and the Annenberg Lecture and Traveling Scholarship. Retirement and Holocaust studies Zamet retired in 2001, following which he enrolled at University College London in Holocaust studies, where he was a student of Michael Berkowitz. After completing an MA, he furthered his studies by working on a PhD thesis on German and Austrian Refugee Dentists 1933–1945, The Response of The British Authorities. In the 1930s and 1940s, displaced doctors searched the world for locations where their skills might be appreciated and where they could find a place of safety from worsening Nazi persecution. As part of his thesis, in 2005, Zamet wrote to the British Dental Journal as he attempted to "reconstruct the history of this brave group of professionals, who despite the odds, succeeded in a foreign country which did not want them". He recreated