cerecdoctors.com Mentor Ross Enfinger shares a case.

Here's a pretty straightforward case where CEREC helped create a vastly superior result when compared to the previous restoration. This patient reported an implant, abutment, and crown having been placed almost 10 years ago. She complained of a foul odor coming from the area and stated that she was constantly digging food out of the pocket around the crown.

These are the before images:

Here's the comparison with the new hybrid abut/crown on the left and the previous cement-retained crown on the right:

Just a wee bit of subgingival cement on the right:

Here's the new restoration seated:

Cement sepsis is a huge problem and we're lucky to have such a great technology to offer a better solution!

the screw channel for abutment or abutment crown is very often narrower than the screw itself rendering it difficult to place. So i have to increase the diameter of the screw channel by grinding the porcelain.