Does Invisalign cause speech problems?

I read the FAQ on their website, but would like to hear from people who have actually used Invisalign. I'm getting it in January. I had a corrective retainer around 10 years ago that I never could stop lisping with (wore it 24/7 for 8 months and then nights thereafter). I have some crowding and a deep bite. Thanks.

Does Invisalign cause speech problems?
I've never actually worn the aligners, but I've talked with many people who have treatment in our dental practice.





The process of speech involves the tongue and teeth. When your teeth (especially front teeth) change even a little, it will affect the way sounds are made.





It's temporary. Patients who read aloud for half an hour or so each night find the changes go away within a few days or less.
Reply:I think it can at first but goes away in time.
Reply:You get used to it very quickly. My receptionist and hygienist both had Invisalign and they wore them to work all the time. Even when talking on the phone, nobody could tell they were wearing the appliances.