Abstract:Objective To optimize the connection between the 3D printing self-positioning titanium mesh main body and the positioning wings at both ends, including thickness, width, and junction configuration of the positioning wings at the connection site. And to analyze and optimize the structural performance of the simulation model before and after the improvement, ultimately obtain the optimal design of a new type self-positioning titanium mesh. Method In the software SolidWorks(Dassault Systemes,America,2020 SP03), build a self-positioning titanium mesh simulation model to optimize and improve dimensional parameters. Then, the simulation software ANSYS Workbench (ANSYS, USA, 2020 R2) is used to conduct multi-objective optimization design for the thickness and width of the connection. And design a discontinuous connection configuration at the connection to obtain an optimized self-positioning titanium mesh. Results When a 40N load was applied to the outer surface of the new self-positioning titanium mesh alveolar crest, the maximum strain at the junction does not exceed the fracture strain of the titanium mesh, and the stress and deformation are within an acceptable range. When a bending force of 10N and 45° was applied to the free end of the positioning wing on one side, the maximum strain at the connection site exceeded the fracture strain of the titanium mesh, and the crack propagation path is concentrated at the connecting line. The experimental results of the virtual model are basically consistent with the mechanical performance verification test. Conclusion By optimizing the size and configuration of the self-positioning individuation titanium mesh connector, it is achieved that when placing and pressing the individuation titanium mesh during surgery, the connector does not break or shift significantly. After surgery, a simple bending of the free end of the positioning wing can achieve a neat fracture and separation of the connector along the connecting line, with a smooth and flat cross-section. This study has achieved ideal clinical results by optimizing the size and configuration of the self-positioning individuation titanium mesh connection.