A systematic review of the 5‐year survival and complication rates of implant‐supported single crowns

The survival rate of SCs supported by implants was 94.5% after 5 years of function. The survival rate of metal–ceramic crowns, 95.4% was significantly (P=0.005) higher than the survival rate, 91.2% of all-ceramic crowns.

Peri-implantitis and soft tissue complications occurred adjacent to 9.7% of the SCs and 6.3% of the implants had bone loss exceeding 2 mm over the 5-year observation period. The cumulative incidence of implant fractures after 5 years was 0.14%. After 5 years, the cumulative incidence of screw or abutment loosening was 12.7% and 0.35% for screw or abutment fracture. For supra-structure-related complications, the cumulative incidence of ceramic or veneer fractures was 4.5%.