Does Invisalign Work?

I can say that I have had a great deal of success using Invisalign on my patients.  In the rare event that you reach the end of your Invisalign treatment and are not totally pleased, your dentist should be able to extend the treatment to correct any less than perfect areas.  My patients love clear aligners.  With that said, your compliance is very important and simple (once you get used to it).  A word of advice is make sure that your dentist can show you a couple before and after photos before you agree to the treatment.  I say this because all dental work by all dentists is not the same.  I have had horror stories of patients going to dentists that are unfamiliar with Invisalign and having very poor results.  I would seek a cosmetic dentist or an orthodontist. Good luck to you and keep us posted.

Invisalign works extremely well as long as two things happen: (1) the patient wears the trays properly (2) the orthodontics is planned properly.
(1) PATIENT WEAR
With proper wear, Invisalign is very predictable and successful. However, Invisalign trays only work if the patient wears them. The recommendation by Invisalign is 20-22 hours. There is a direct correlation with success and wear. Patients that wear the trays more see results faster. Over the years, many patients in my office have tried wearing the trays 10-15 hours a day and tooth movement was slow and unpredictable. This is of course frustrating for both patients and the orthodontist. 
(2) PROPER PLANNING BY ORTHODONTIST
Your orthodontist works with Invisalign to design your beautiful end result. A 3D virtual simulation is establish showing tooth movement throughout the Invisalign process, tray by tray. You can actually track your progress and compare your tooth movement to the computer simulation throughout your Invisalign journey. This step-by-step virtual plan developed by Invisalign and your orthodontist is the key to your results - meaning the key to loving your smile at the end. This means that the designer (your orthodontist) is an integral part to Invisalign working the way that you hope. Before even starting your first tray, you should review the 3D simulation to make sure the result matches what you would like to accomplish.

Ofcourse! Invisalign is a very predictable method to move teeth. The best part about it is that you can see exactly how your teeth move before you start your treatment and you have a video to correlate to throughout the treatment. 
In the rare scenario that you still feel there's still a little work left at the end of treatment, your orthodontist can extend the treatment and order refinement aligners. My patients love Invisalign because there is no other treatment option that is so predictable. 
Hope this helps. Warm Regards