I had upper jaw orthognathic surgery in 2006. I am 42 man now.Numbness has persisted since then.To deal with this, one doctor adviced me to use a tool similar with an invisible teeth.Everythime I put it on, I really feel very good, so I stay with it the whole day basically.I just take it out to eat and drink (which in social situations is sometimes not that easy).But I think we, "orthognathic patients" should unite more, exchange experiences and try to help each other.Maybe we should even meet somewhere, since I guess there are hundreds of us scattered around the world with the same issues, namely paresthesia, doctors don't really have a solution and basically we should gather more.Most of us have, because of this surgery, a permanent condition, and maybe we should form some kinf of association as other health situations have.