Taking an “All on Four” clinical course taught by Chris Winterholler.
Two quick observations:
It works. Like many dentists I scoffed at teeth in a day and only four implants as being not only bad dentistry but fraudulent. Now that I have seen the science and the technique I am impressed. BTW that angled distal implant is an important component of the system it is not sloppy placement.
This technique would not be possible (or would be a lot more difficult and dangerous) without advanced technology. Cone Beam CT, implant planning software, laboratory CAD CAM and milling technology all are important components of the system.