How old can dental x rays be before becoming useless?

[letswastemoney]

Strange question, but it breaks up the political posts.

Let's say I have digital dental x rays from one office, but I decided they weren't right for me. How much time do I have to find another dentist before those x rays become useless and I have to take new ones?

[ReplayRandall]

Strange question, but it breaks up the political posts.

Let's say I have digital dental x rays from one office, but I decided they weren't right for me. How much time do I have to find another dentist before those x rays become useless and I have to take new ones?
Usually partial sets of x-rays are 6 months, full sets up to 1 year, per my insurance thru Blue Cross/Blue Shield...

[barahona44]

I never understood how they use dental charts to identify dead people without ID.They don't seem to be that distinctive but I'm probably wrong.