My teeth are almost right where I want them. The bottom front teeth have moved in and I can feel the difference! There's one little spot I would like to come in a tad more so Smilie sent a free refinement kit to make new updated molds of my teeth. I did a zoom meeting with their tech to learn better techniques for capturing better details of my teeth. They provided a free return shipping label as well. So far Im more than happy Im using these guys and still haven't found a better price!