A new pfm bottom full bridge molar tooth got chipped due to the top metal implant just showing through the temporary top bridge, and was buffed out, then a couple weeks later that same bottom molar chipped again, can anyone be sure the structural integrity of that botttom molar is sound? Actually hasnt it now been compromised due to the repeated pecking of the top metal several hundred if not thousand times when some of the highest pressures are created? Even if a potential weak spot is not obvious, can anyone truely know how much damage was done to that molar? I wouldnt want a metal beaten ceramic tile installed on my floor, would you?