no, I don't think so. the 100 and 600 series film in polaroid backs is peel-apart film in general. the polaroid denominations are somewhat confusing. it has nothing to do with the instant film from the impossible project. the peel-apart film is now made by fuji. it's the fp-100c (colour) fp-100b (b&w), both 100 asa, and the fp-3000b with an incredible 3000 asa. it's real fun. but be aware: the mamiya 645 covers only a part of the film (6x4.5cm), whereas the total picture surface could be as big as 9.5x7.3cm with an appropriate camera.
if you have more questions, please feel free to ask. I'm coming here once a day at least.
greetings from the south of france
reinhard