Royal Army Dental Corps This tie was introduced in 1972. The Corps bowtie is typically worn for mess dinners and other formal occasions. Before the formation of the tri-service dental organisation, which came into being in 1995 as the Defence Dental Agency, the RN, Army and RAF were each responsible for the dental care of their own service personnel and had their own separately administered organisations -the Army Dental Corps (ADC) having been responsible for the teeth of the RAF until 1932 when the RAF set up its own dental branch. The RADC was responsible for the dental care of all army personnel of the Regular Army world wide. From 1963, it was administered via the Dental Group system. There were in all thirteen dental Groups around the world, including HQ and Central Group RADC in Aldershot.