Is there a possibility of nerve damage if I get implants and a bridge after wearing dentures for twenty years?

Q.
Yello, I am concerned about getting nerve damage in the lower jaw. I hope to have four front teeth replaced by dental implants and a dental bridge but have worn a denture for over twenty years now and the underlying gum and bone has shrunk considerably – what are the chances of damage being done in this instance? I also have bruxism and am worried about the general outcome of such dental treatment. I have had considerable problems with gum disease in the past (the reason for the tooth loss) but have excellent oral hygene levels now and for the last few years. I have no worries on that score, but would appreciate what you have to say on the other matter.