how many mri x rays and c t scans are too many

I have had mir  on diferent parts of my body.  Both wrists and shoulders, neck lower back, left knee.

Then I had x rays on lower back two times, then shoulders two times and neck one time.

I had six to eight x rays of my chest.

I had a CT scan of my shoulder.

Then two panels of x rays of my teeth.  This has been  done within the last four and one half year.  Is this too much exposure to dangerious radiation ?

I am 60 and this was ordered because I had mutuple injuries and conditions.

Thank You Gerry