Purpose: The study aimed to investigate the mechanical effects of the taper position in the abutment hole and the screw taper angles on the implant system and peri-implant tissue using finite element analysis.
Methods: Four taper positions (L1, L2, L3, L4) in the abutment hole were established using 3D software and five screw taper angles (30°, 60°, 90°, 120°, 180°) were set.
Result: Taper position significantly affects the stresses in the implant system. The 30° and 180° angles (L4 position) showed less stress than other angles.
Conclusion: Elevated taper position and reasonable taper angle are beneficial in reducing the stress in the implant system.
Keywords: Dental implants; abutment hole; finite element analysis; screw taper angles.