Structural optimization design method of molar prosthesis implant

The invention provides a structure optimization design method of a molar prosthesis implant. The method comprises the following steps: designing a dental crown geometric model of a mandibular first molar prosthesis according to geometric shapes of a maxillary first molar, a mandibular first premolar and a mandibular second molar; the implant of the mandibular first molar prosthesis is cylindrical; dividing grids for the implant three-dimensional model, applying material attributes, defining load and boundary conditions, and performing finite element simulation analysis; on the basis of the obtained preliminary analysis result, carrying out size optimization design of the implant, defining a size optimization target, parameterizing design variables, and setting an optimization algorithm; optimizing the size structure of the implant according to an optimization result, further carrying out variable density topological optimization of the implant, determining a design domain and a non-design domain, setting topo