Chronic Infraorbital Nerve Compression - 3 Years?

I have chronic minor compression of the infraorbital nerve (little paresthesia) due to originally overlooked zygomatic/maxillary fracture. My neurologist says, it's about 50% chance, that this nerve will fully recover after that long time when surgical decompression (by osteotomy) will be done. The ENG test was NOT performed. She said, that V2 branch of trigeminal nerve cannot be examined. This is gamble, but as she said, there is still a chance. Is she right? isn't she too optimistic?