Can Invisalign Fix 100% Overbite?

You have asked a great question.  In this context "overbite" means the vertical overlap of the front teeth. 100% overbite means that the upper front teeth cover 100% of the lower front teeth.  In general 20% to 30% overbite is about normal. If one of the goals of your treatment is to correct the overbite, then Invisalign may have trouble fully correcting it.  On the other hand, if overbite correction is not an important goal then Invisalign may be OK.  One thing for sure: with braces we can correct virtually any bite problem no matter how severe, but with Invisalign bite corrections are often less possible and predictable.  Your orthodontist should be able to clear up any confusion regarding correcting your overbite.

Most experienced Invisalign providers agree that deep overbite correction is one of the most challenging movements to accomplish with aligners. It is somewhat more successful in adolescents who are still undergoing some facial growth than in adults who kave fully matured. One approach that can get around this limitation is to combine Invisalign with regular braces thus taking advantage of the best attributes of the two systems. Given your description of your overbite, I urge you to be sure you are being treated by a provider with a lot of Invisalign experience. A successful outcome will be a challenge to accomplish under the best of circumstances!

The term overbite is common in two scenarios, a "buck tooth" look OR when the upper teeth cover the appearance of the lower teeth when biting.  They are not the same thing, so correcting them take different approaches.  

Invisalign has a difficult time with the second scenario or "deep bite".  It CAN be done, but it is more predictable with traditional methods.