Objectives Three-dimensional finite element method was applied to analyze the influence of various angled abutments on the distribution of the stress and strain in the implant-bone interface. Methods Thin-slice scanning of spiral computed tomography was applied to construct a three-dimensional finite element model of mandible with dental implants. A simulated force of masticatory muscles was loaded in the mathematical models to analyze the stress and strain distribution in the implant-bone interface by using ALGOR software program, when dental implants were conjunct to straight, 10°.20° and 30° abutments, respectively. Results Numerical and graphic results were generated for Von Mises stress and maximum as well as minimum strains. Von Mises stress occurred predominantly in the cortical bone layer-on the neck of implants, and secondly at the bottom of dental implants. With the angle of abutments added, the positions of Von Mises stress.the maximal and minimal principal strain were all transferred from the neck to the bottom of dental implants. Conclusion There was an increase occurred in the magnitude of stress and strain in the implant-bone interface as the abutment angulation increased. It increased obviously when the denture was produced by 30° abutment.