ZR has a chemical bond you say?? ruh ro...
here we go again....
ZR has no oxidation, therefore no chemical bond. hence, why soo many doctors are seeing them come out of the mouth after cementation. also why ....oye.. please refer to my thread regarding the crappiness of this product. mechanical retention is NOT enough.
some day Zirconium will go away..just like belle glass, Just like Eris 2, just like..........ect. ect. ect.
