To explore the technology of combination with computed tomography (CT), computer aided design (CAD), finite element analysis (FEA), and Selective Laser Melting (SLM) in manufacturing a titanium custom-fitting surgical guide well matched with the patient mandible in order to realize mold-free manufacturing.

A model of a custom-fitting surgical guide was built by CT scanning machine and Solidworks software, and then the model was imported into Ansys software to carry out simulation analysis with nonlinear contact method. Finally, the model above was imported to SLM molding equipment, the titanium custom-fitting surgical guide was proposed via titanium powder melted with layer by layer using a high-speed scanning galvanometer.

The maximum equivalent stress of the mandible and surgical guide was distributed uniformly and reasonably, the titanium custom-fitting surgical guides formed by SLM molding equipment provided high accuracy and high density.

The combination of CT, CAD, FEA, SLM technology can fulfill mold-free manufacturing of surgical guides and the manufacturing cycle is shorten as well.

A titanium personalized orthodontic bracket is designed and manufactured using the technology of computed tomography (CT), computer aided design (CAD), finite element analysis (FEA), and selective laser melting (SLM) to well match the patient tooth so as to realize mold-free manufacturing.

A model of a titanium personalized orthodontic bracket which is built by CT scanning machine and Pro/E software, is imported into Ansys software to carry out finite element simulation analysis with nonlinear contact method. Then, the titanium personalized orthodontic bracket is proposed after the model data above is imported to SLM molding equipment via titanium powder melted with layer by layer using a high-speed scanning galvanometer.

The maximum equivalent stress of the titanium personalized orthodontic bracket is distributed uniformly and reasonably, the titanium personalized orthodontic bracket formed by SLM molding equipment can provide high accuracy and there is a high similarity between the bottom of the orthodontic bracket and the tooth surface shape.

The combination of CT, CAD, FEA, SLM technology can fulfill model-free manufacturing of the personalized orthodontic bracket and thus shorten the manufacturing cycle.