This systematic review evaluates the 5-year survival rates and complication rates of implant-supported single crowns (SCs). The study included 26 prospective and retrospective cohort studies with a mean follow-up of at least 5 years. The overall survival rate for implants supporting SCs was 96.8% (95% CI: 95.9-97.6%), and for SCs, it was 94.5% (95% CI: 92.5-95.9%). Metal-ceramic crowns showed a significantly higher survival rate (95.4%) compared to all-ceramic crowns (91.2%). Biological complications, such as peri-implant mucosal lesions, occurred in 9.7% of SCs, and 6.3% of implants had bone loss exceeding 2 mm. Technical complications included implant fractures (0.14%), screw or abutment loosening (12.7%), and veneer fractures (4.5%). The review concludes that while implant-supported SCs have high survival rates, biological and technical complications are common, necessitating more long-term studies to assess their long-term outcomes.This systematic review evaluates the 5-year survival rates and complication rates of implant-supported single crowns (SCs). The study included 26 prospective and retrospective cohort studies with a mean follow-up of at least 5 years. The overall survival rate for implants supporting SCs was 96.8% (95% CI: 95.9-97.6%), and for SCs, it was 94.5% (95% CI: 92.5-95.9%). Metal-ceramic crowns showed a significantly higher survival rate (95.4%) compared to all-ceramic crowns (91.2%). Biological complications, such as peri-implant mucosal lesions, occurred in 9.7% of SCs, and 6.3% of implants had bone loss exceeding 2 mm. Technical complications included implant fractures (0.14%), screw or abutment loosening (12.7%), and veneer fractures (4.5%). The review concludes that while implant-supported SCs have high survival rates, biological and technical complications are common, necessitating more long-term studies to assess their long-term outcomes.