Well, I’ll admit that I was in a hurry this morning to get an Emax abutment/crown in the oven and fired. I was sure that I placed Object Fix within the restoration to seat to the post, but it may have only been in my imagination!
The Object Fix putty material helps to stabilize the restoration during firing, but it also is imperative for proper cooling of the ceramic. In this case, it appears like the heat escaped through the post, and a small amount of the Emax material adhered to the post. The chip can be seen on the post and inside the hole for the crown.