Detectives say a dentist who recognises their own work could be key to identifying a man who was murdered and dumped in a forest more than a decade ago. Two campers found part of the man's skull in Clocaenog Forest, Conwy county, in 2015, leading to the discovery of his skeleton by police. But despite extensive tests, and a £20,000 Crimestoppers reward for information leading to the arrest of those responsible, the man has never been identified. North Wales Police, which has issued a renewed appeal for information, said that the man's teeth - which were described as having "unique" work including fillings, crowns and root canals - could help them to finally identify him. "We firmly believe that if you were the dentist you would recognise your work - it's quite unique," Det Supt Chris Bell from North Wales Police told BBC's Crimewatch Live. He said X-rays of the man's spine also showed that he had arthritis which would have caused him back pain.…