![]() The deformation time of the module is concentrated within 2 h after heating. The layer height of the module were inversely proportional to the degree of deformation in the same sterilisation method. ![]() Heat-resisting polylactide (HR-PLA) has the same melting temperature ( T m) as PLA, but its glass transition temperature ( T g) is greater than the EO sterilisation temperature, so there is no obvious deformation after EO sterilisation. We found that polylactic (PLA) modules sterilised with ethylene oxide (EO) would undergo micro-deformation, and these micro-deformation characteristics depend on the building direction, i.e., the module stretches in the Z direction and shrinks in the X and Y directions. The purpose of this study was to evaluate the influence of chemical-based sterilisation methods on the dimensional accuracy of different materials and the influence of module parameters on the degree of deformation. As such, there will be a security risk in clinical applications. ![]() However, during practical operation, it is found that the location hole occasionally deviates from the ideal channel. ![]() ![]() 3D printed navigational templates have facilitated the accurate treatment of orthopaedic patients. ![]()
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