The term nerve damage is a very broad category of problem. There are times when implants are done that a nerve that's close to the implant or the surgical site gets traumatized. When that happens, the nerve reacts by causing a tingling sensation or a feeling of numbness in the area or that side of your mouth. Unfortunately, nerves are the slowest growing tissue and can take a while to regenerate, but can happen over time. One suggestion would be to see an Oral Surgeon who can give you a more definitive diagnosis.