This uses high grade, non-toxic, and FDA-approved polymer plastic to create a replacement tooth. Each kit contains enough material to create up to ten teeth. Also included: detailed, patented instructions; a web link for 3D video demonstration; and free dental tools made from high-quality German steel.
Of course, it's just a temporary cosmetic replacement while you work with your dentist to find a more permanent solution. One of these teeth lasts for a couple of months, and you have to remove it to eat and sleep. It's also not meant to create a multi-tooth bridge (though one reviewer seems to have had some success with that), and you shouldn't use it for emergency tooth repair at all.
Promising review: "A life saver. While waiting for an implant, I was using a flipper to cover a gap in my teeth. But, I had a kind of wild night and lost it and started to panic. I set up a dentist appointment to have one made again but was it was going to set me back around $500. It made no sense to spend so much money for something that I would only need for a month or two. That's when I gave this product a try, and I have no regrets. It's explained well and is easy to use. I can make spares. Highly recommend for anyone in a similar situation. No need to spend an exorbitant amount of money on a temporary flipper." —Jibran Khan
Get it from Amazon for $32.75.