Unfortunately, I was not pleased with my results using SDC. Initially, I was told my treatment was going to last 4 months with the use recommended by the team and I did use aligners 20-22 hours a day. 4 months went by and no major results. I contacted the team and they were helpful and asked me for photos of my teeth etc and then sent me new sets of aligners. Long story short I ended up requiring 1 year of treatment and still my 2 front teeth, which were my main concern, did not straighten. Moreover, my teeth developed these lines on them, which are not that visible but they are definitely there. I don't like writing bad reviews but I was very disappointed that I spend all that money for nothing.