Objective: To investigate the influence of cantilever lengths on the load transfer and stress distribution patterns of the interface between the bone and dental implants. Methods: Authors analyzed the effects of three different cantilever lengths (0,5,10mm) on the stress distribution patterns of the interface between the bone and dental implants using three-dimension finite element method. Results: When cantilever was existed the maximum stresses occurred at the most distal bone/implant interface located on the loaded side and significantly increased with the length of the cantilever (p<0.001). Conclusions: Under loading, the highest stresses occurred at the distal cervical bone margin adjacent to the cantilever. The longer the cantilever was, the higher the stress was.