Subcrestal placement of dental implants

The Neodent Implant system can have implants placed at crestal level or 1-2mm subcrestal in bone. The morse Taper system allows for a stable biologic width with excellent bone maintenance. Restoratively, what needs to be taken in to consideration when temping or placing the correct margin for your temp or final abutments? Critical decision making to long term success of your implants.