X-rays are part of a permanent record. Consider the most gruesome need would be identification in case of death. Sorry to say it but the truth. Also, in case of malpractice suite it is defendants evidence. Like I said laws vary from state to state. In Texas, x-rays belong to doctor and they are required to store them indefinately. Also, Texas law allows the dentist to charge up to $25.00 per page to copy any records. I think this excessive and most dentists that I know do it free of charge.