Is it safe to get X-rayed while wearing my metal attachment for the Invisalign elastics?

The invisalign attachments are precisely designed and placed to aid the aligners in having a "handle" on the teeth to "grab" and move them more effectively through treatment.They generally fall off quickly if the bonding procedure was contaminated by moisture. This is not a problem to repl...

It is always advisable to get filling done before starting braces/aligner/ invisalign treatment. 

Neither the bonding nor the Invisalign are to blame. The orthodontist is correct in saying that the aligners should not brake the bonding. At the same time the dentist that has done the bonding is not to blame either. Your bite is to blame. That is why the orthodontist and dentist are working...