I never suggested a mirrorless camera for so many years. 1 reason for that was the unavailability of 100 mm macro lens for the mirrorless camera.This issue has been finally resolved by CANON. No more waiting. Huge applause to Canon for introducing the RF 100 mm macro lens for dental photography using a mirrorless camera. 

We all know that the canon mirrorless cameras come in 2 mounts 

1 is the M mount (for small sensor category) 

2nd is the RF mount for the full frame mirrorless category. 

Canon has recently launched the RF 100 mm macro lens and it will be the best choice for MIRRORLESS camera users and yes NOW WE MAY shift to a mirrorless camera if we wish to. 

The cost factor is something we have to look for now.