The British Society of Periodontology was founded in 1949 to promote the general health, well being and knowledge of the public, the art and science of dentistry and in particular the art and science of periodontology and dental implantology and to promote improvements in the teaching of the same. The Society logo in the centre of the blade of the tie features a tree of knowledge encircled by two leeks, two shamrocks and two thistles surmounted by a rose emphasising that the Society is a UK-wide organisation.