Gavra: Are you saying that scientific proof (i.e. DNA evidence) is acceptable as proof?
Absolutely, it just depends for what case/proof. Once again, can you be more specific?
For example, I know of no Rav who would not be Mattir an Agunah based on scientific proof that a dead person was her husband, just like dental records can be used according to many poskim. Of course, that does assume that the DNA testing is proof (as opposed to a “likelihood” or proof of relation). I am not a Muvhak in DNA testing methods, and do not know if they are considered “proof”.