Am I a Candidate of Invisalign if I Have Gum Recession with Widening of Smile?

Before starting any ortho procedure you should be gum disease free. The gum recession treatment can be done after Invisalign is finished. We actually use the aligner or tray from invisalign to stabile the teeth after surgery and to hold medication in place. If you do gum grafting before then you dont really have that benefit.

Recession can be a serious problem that can lead to tooth loss in the long term.  Recession exposes root surface which is much more susceptible to cavities than the crown of the tooth which is covered by enamel.  To fix recession areas we use tissue grafts, the gold standard of which is taking autogenous tissue (from the roof of your mouth) and attach it underneath the adjacent gum and over the exposed root surfaces.  Recesion is ideally treated before you begin orthodontics.  If you have access to a few good gum specialists I would get a few consults and see what they have to say.before beginning orthodontics. 

It is hard to make a recommendation without seeing pictures of your moth and having more information about your situation.  However, in general. I think periodontal health is more important than an absolutely perfect bite.  Better bites usually beget better gum (periodontal) health. But, even excellent bits can suffer recession.  I would go with protecting the periodontium (gums) as the primary goal and then protecting the bite or alignment as second priority.

Hope this makes sense,