Robert Edward Isaac1, Dom Sinson2, Simon Jones3. 1. Oral and Maxillofacial Surgery Department, Royal Gwent Hospital, Newport. Electronic address: dr.risaac@gmail.com. 2. Oral and Maxillofacial Surgery Department, Royal Gwent Hospital, Newport. 3. Consultant Oral & Maxillofacial Surgeon, Royal Gwent Hospital, Newport.