His major clinical and research interests is in the use of clinical devices for the treatment of destructive Sleep apnoea. Dr Shea has been practicing dentistry for over 30 years. He has a major interest in the education for dentists in sleep medicine. In 2011 he was appointed the position of senior lecturer in Dental sleep medicine at Adelaide University Dental school. Dr Shea was instrumental in the development of the Graduate Diploma programme in Dental sleep medicine jointly with the University of Adelaide and the University of Western Australia, a 2 year part time university degree available to dentists worldwide