.Guy’s, King’s and St Thomas’ (GKT) Dental Institute Society. The Guy’s King’s and St Thomas’ Dental Institute, now the King’s College London Faculty of Dentistry and Oral and Craniofacial Sciences, was formed in 1998 from the merger of the dental schools of the United Medical and Dental School of Guy’s and St Thomas’ and King’s College School of Medicine and Dentistry. The Faculty is the largest dental clinical academic centre in Europe. Several GKT Dental Institute/Faculty of Dentistry and Oral and Craniofacial Sciences/ and Institute/ Faculty Dental (student) Society ties have been produced. Examples of these ties (22161 – condition, good; 22328.1 – condition, good; 22328.2 – condition, good), based principally on Guy’s Hospital colours, include the Guy’s, King’s and St Thomas’ crests.