Hello, I have a patient with lower cast partial and currently has an existing bridge from #6 through 13, with abutments on #6, 11, 12 and 13. He is missing his remaining maxillary teeth. Patient had requested a "clear" partial which we made using duraflex but it did not fit well at all. Everytime he bit down, the partial would move up and down as its obviously not tooth borne and he has severe bone loss in posterior aspects of maxilla where there are no teeth. I am confused as to how to proceed with this case. Patient has severe bone loss in posterior maxilla, where he is missing his teeth, thus ruling out implants. Plus its questionable to try another flexible partial. What options are there for this case? Can we do a cast maxillary partial, but if we do, then doesn't that lead to risk of fracture of the abutment crowns part of his bridge. Please help.