The temp fillings are getting harder to find. They used to be in any grocery or drug store where the dental floss etc is, and they used to have at least two brands of it. Maybe the ADA pressured them to take it off the market? Dunno.
The last stuff I got was in Target. I couldn't find it on the shelves and asked the pharmacist in frustration what the deal was. Interestingly they kept some hidden away behind the counter that you had to somehow know to ask for.
And where the stuff I used to use lasted weeks at a time, this stuff seems to fall out within a few days at best.
BTW, no need to wait around for lasers and headphones. 90% of the dentistry you'll need can be done painlessly in the comfort of home. Between oil pulling, brushing and Colloidal Silver most issues like decay and gum diseases can almost always be reversed painlessly and inexpensively.