Slab Fx ( sub-crestal ) of the L Maxillary 4th Pre Molar requiring non traumatic surgical extraction. Immediate Implant placement in the Distal and MB sockets. The palatal root was submerged and left in place to preserve palatal and interradicular bone. This is a relatively new technique utilized in Human Implant Dentistry. The submerged roots can be vital or non-vital and if proper protocol is followed the results are excellent and predictable. These implants can remain buried or in 5 to 6 months uncovered, impressions taken and a single crown and custom abutment digitally designed for placement.