Objective:Through the establishment of a 3D finite element model of a dental implant fixed edentulous maxillary and analysis of the stress distribution of implant in different position,we propose to provide a reference for clinical applications. Methods:In this research,we selected a volunteer of edentulous maxillary and moderate alveolar bone absorption, and then scanned his head with cone-beam computed tomography(CBCT). This research used a series of computer software for data conversion to reconstruct three-dimensional solid model of the maxillary. The three-dimensional solid model of Bego implant was accurately obtained by an integrated method,which combined the optical measurement of implant profile data by 3D optical grating projection with the plane-image measurement of characteristic details. A 3D finite element model of a dental implant fixed bridge was built successfully by laser scanning. Results:We successfully established the three-dimensional finite element model,and simplified it with maintaining the similar mechanics of the original model to improve the efliciency and accuracy of the analysis. Conclusion:Three-dimensional finite element models of a dental implant fixed edentulous maxillary established by the method of combining CBCT,3D laser scanning, rapid prototyping,and to generate finite element model by grid partition of finite element sofoware are feasible and with a good geometric similarity.