“When there’s a plane crash, the news always says the victims were identified by their dental records. But if they don’t know who *you* are, htf do they know who your *dentist* is?” — Robert Schimmel
There are databases of dental records. Investigators don’t necessarily have to know the dentist’s name to find a match between a victim and a record. In the case of a plane crash, the investigators can start with the list of passengers.