While it is recommended to see your dentist on a regular schedule, it is even more important to continue seeing your dentist before a joint replacement. The bump above the implants should be evaluated by a dentist, be it the one who placed the implants, the one who placed the crowns or...
Hello! I think you have a possible infection from how I see from the photo. Possible periimplantitis. Go back to your doctor and check for it and also you can do an X-ray to check for bone retraction or infection.
Sanatate!
