Oven Master 8mm film has never disappeared it most likelike only became unavailable where you buy film B&H photo the largest mail oder photo dealer in the USA if not the world offers:
Kodak
#7217 Vision2 200T Super 8 Silent Color Negative Film Price : $ 18.95
#7265 PXR464 Super 8 50' Eastman Plus-X Reversal Silent Price : $ 13.95
#7266 TXR464 Super 8 50' Eastman Tri-X Reversal Silent Movie Film Price : $ 13.95
#7280 Ektachrome 64T Color Reversal Super 8 Silent Film Price : $ 17.50
they also sell 16mm film.
Processing is available from a number of labs around the world
Here is an info site on 8mm and small format movie film
http://lavender.fortunecity.com/lavender/569/#
As to the idea of scanning a frame of 8mm film and producing a print
The image is only 3.5 X 5mm or .137795" x .19685" at 4000dpi (like my Canon FS4000US scanner at max setting) that's = to 551 X 787 pixels. Even printing at 1/2 the normal std of 300 DPI you could only end up with a very very burly print of approx 3.5" X 5.25"
And if you scan 8mm film at 4000dpi the grain will look like SUV's I would be glad to scan some and show you It sucks. I worked one day for almost 6 hours trying to produce a print of my wifes mother from some old home movies (her mom passed away when Audrey was just 12) and I have to say using everything I have learned as a very advanced amature photographer for over 30 years. I only made a print of 1" x 1.5" and even at that small of a size The results SUCKED.
the only reason it can be transfered or even viewed on a screen and look decent is the movement from one frame to the next (the flicker factor) keeps the eye from actually seeing any one frame long enough to see details.
It is also one of the reasons the format is still being used to day as that look is almost impossible to recreate any other way. And for things like advertising or art films that look has a following.