This isn't usually an area I work in, and I generally have more than enough tasks in the areas I am familiar. I've decided to read it and give it a try. After reading both your draft and the main article, yours is a major improvement, and is much more encyclopedic and polished well. I agree with your concerns on the talk page about the advantages/disadvantages section (far too much is unsourced or irrelevant), but I believe the Scientific studies section should be included in some form.  That is relevant information (in my opinion) and seems to be at least decently sourced (may need a bit of work). It is not 100% relevant, but the sentence "Align paid OrthoClear $20 million and it agreed to end its operations." which company does "it" refer to? I also assume that you will include the non-free media File:Invisalign software user interface.png after the changes are done?
I'm glad that you were able to engage multiple editors while working on your draft. I'm very impressed every time I see your work not only due to quality but how to go about achieving that level of quality. Let me re-read it again tomorrow, and I'll handle the requested edit for you.  Cheers, ''''''''''