The influence of angled abutments on stress is a matter of debate. It is widely accepted that increased stress on implants and bone has been associated with the use of angled abutments. However, comparisons of clinical success rates of implants restored with angled and straight abutments indicate no significant differences. This review summarizes the dental literature for for clinical trials that appraised the survival rate and biomechanical complications associated with prostheses that are supported by angled abutments. The results demonstated that the use of angled abutments did not detrimentally affect the retention of dental implants. it was possible that the magnitude of stress within peri-implant bone increased or decreased under different conditions. Further research should be conducted to confirm that favorable peri-implant stress levels may be induced if suitable angulation of abutments was selected.