Hi MP,I had lingual nerve microsurgery done on November 20, 2002. My lingual nerve was penetrated by a fixation screw used in a prior jaw surgery. To date I have not regained any of my sensation, taste, or feeling. The micro surgeon said it would be at least 6 months before any of the above begin to return. I have not experienced dry mouth through this whole ordeal, however, my tongue does feel very thick and I constantly have a metal taste in my mouth.
If your wife is considering the surgery my advice is to seek out a surgeon who is HIGHLY specialized in this area. To the best of my knowledge there are only a handful of them in the U.S. Dr. B or Ross may be able to provide you with some names. If you would like the name of my surgeon you can email me at decristo@excite.com.
Another thing to keep in mind there is window of opportunity for this surgery to be successful. Most surgeons recommend having it done within 6 months of the original injury, however, this time frame can fluctuate depending on the type of injury (damaged vs. severed) and also the age of the patient. I have been keeping everyone on this site updated throughout this process and will continue to do so. You will find some of my other posts under the subject of "lingual nerve repair surgery." Tell your wife to keep all of her options open and I wish the both of the best of luck with whatever decision you make.
Don