I am posting this case, after reading a previous case on Rapid Bone Loss after re-cementation. In this case, I placed 3 implants in Sept 2015. Restored them after 8 months. 24 cemented crown . 25, 26 were screwed in . At the checkup appointment on March 2017, the x-ray shows nice bone loss at the screwed in prosthesis. Can’t blame the cement here. Could it be lack of passive fit? Could it be occlusion? What are your thoughts?