As Emeritus Professor, continued research and scholarly work in the Division of Dentistry (School of Medical Sciences). Clinical activity as a Consultant in Dental and Maxillofacial Radiology at the University Dental Hospital of Manchester (Manchester University NHS Foundation Trust).
Keith Horner qualified as a dentist in 1981 from Leeds University and held several junior hospital posts in Leeds and Sheffield. In 1984 he became a student again, undertaking a one year Master's degree in Experimental Oral Pathology at the London Hospital Medical College Dental Institute. Subsequently, he began specialist training in Dental and Maxillofacial Radiology at King's College Hospital and the Eastman Dental Hospital in London in the 1980s, leading to the award of his specialist Diploma. He moved to Manchester in 1988 as Lecturer, being granted Consultant status in 1990, Senior Lecturer in 1992 and a personal Chair in 2001. He has over 140 research publications and substantial grant income. He has acted as co-ordinator for two European Commission Framework projects. His research interests include osteoporosis and its dental implications, dosimetry and Cone Beam CT. He led the development of European Guidelines on Radiation Protection in Dental Radiology, published by the European Commission in 2004. He led the SEDENTEXCT European project on the Safety and Efficacy of dental Cone Beam CT, producing a number of key scientific publications, evidence-based guidelines and a quality assurance programme. He has served on influential working parties in the UK (Public Health England; FGDP[UK]) and acted as an invited expert for the IAEA Radiation Patient of Patients Unit. He was awarded an honorary Doctorate of Odontology degree by the University of Malmo, Sweden, in 2008 and an Honorary Fellowship of the Faculty of General Dental Practice (UK) in 2018. He currently holds an Adjunct Professor appointment at Trinity College Dublin.
March 1981: B.Ch.D. (Hons.), Leeds University.
September 1984: Fellow in Dental Surgery of the Royal College of Physicians and Surgeons of Glasgow, (F.D.S., R.C.P.S., Glasgow).
November 1985: M.Sc., London University
October 1987: Diploma in Dental Radiology of the Royal College of Radiologists, (D.D.R.R.C.R.)
June 1997: Ph.D., Manchester University.
July 2001: Fellowship of the Royal College of Radiologists (FRCR) without examination.
October 2008: Odont Dr; Doctor of Odontology (honoris causa), Malmo University, Sweden.
October 2017: Honorary Fellowship, Faculty of General Dental Practice (UK).