When I was first starting out I was taught to cure for 9 hours and to only quick cure (1 1/2hr 30min. boil) when I had to. Was told that you got a more stable acrylic with the longer cure. That quick curing made the acrylic less color stable, more brittle, and increased the chances of porosity. Now just so you know, thats what I was told 10 years ago by the techs that were training me, that was probably told that by the tech. that trained him, who was told that by the tech that trained him, who was told that by a guy that made it up...
Now what do I think after 10 years? Dont think it makes much difference. I will say its seems to me the acrylic feels slightly different when you grind on it from one method to the other. Other then that haven't really seen much difference, though I dont quick cure many dentures as our routine here is to flask and pack in the evenings. Let'em cure overnight for 9 hours and when the finisher gets there the next morning he's all ready to go....
