Since I needed temporary patch, I thought, why not try it and I have to say it really works, it filled in the crack completely, after a few hours I was chewing without any problem, but the first couple of times I had a problem mixing the liquid and the powder, you scoop one scoop on to the paper then with the other tool you cut the powder in half, my problem was that I put the liquid onto the powder, after cutting powder in half, you put a drop of the liquid next to one of the powder halves, then bring one of the halved to the soft liquid and mix it back and forth, after a few seconds mix in the other half until the consistency is that of a white soft mix, or you can google to use this product and you can see a video and see how the mixture will look like. I hope this helps.