Hi there, I'm really sorry to hear about your complication. Nerve damage with dental implant therapy can occur, but is extremely rare. There are steps that can be taken to eliminate the risk which includes careful clinical assessment of the site as well as proper imaging which includes but may not be limited to Panorex and CBCT 3D imaging. Now that you have some damage, you may want to find a doctor that is experienced with managing these type of injuries. It may be possible that with enough time, typically around 1 year after the date the nerve was damaged, some of clinical symptoms such as numbest and loss of sensation may diminish, only time will tell. Good luck!