Apparently I have extremely good luck, because I managed to make a mix well the first time. Put it on my tooth two months ago, and its still there. I still eat and brush on that side regularly. The hole is not small, yet its showing no signs of wear and tear and is very firmly still in place.Might have just gotten lucky with the mix? Anyway, its done its job a lot better than I was expecting.Good solution for when you have a hole or crack in your tooth, but you can't afford scam dentist prices (or practices, this is a shady industry wearing a shiny coat). Its definitely better than leaving your tooth exposed. And should you find a good non-scam dentist, it should be easy enough for them to remove and replace with a proper filling.