My dentist put in a false tooth atop an implant. (bottom left, second from rear.) now when i chew, nearby top & bottom teeth are sensitive. no pain.

Re-evaluation: Please have your dentist immediately re-evaluate your bite. The bite may be a little high.

Possibilities...: There are several possibilities here; regardless of the actual cause, you should contact you dentist. Most issues like this can be resolved quickly.

New implant: How long ago was the implant crown inserted? It may be related to the bite or some pressure on the gums. It might resolve on its own within a day or two from insertion. It is best to contact your own dentist, describe the issues and have him/her take a look at it to see if any adjustments are necessary.