Artificial Alveolar 3D Printing Route Optimization And Experimental Analysis

In modern medical research in the mouth, the treatment of oral edentulous alveolar bone repair for patients is an important problem. If you want to get a good denture effect, implanting bone graft material in the tooth roots must to reconstruct alveolar anatomical shape. By this way, we can achieve a good denture effect and provide an excellent repair treatment for edentulous patients.The 3D printing technology and the manufacture of bone tissue engineering’s combination is a mainstream way to manufacture biological bone tissue scaffold. For the characteristics of the stent, we presented four different optimization schemes based on the existing molding path. The advantage is that we can ensure material continuous extrusion and avoid adjacent layers overlap problem. Its purpose is to determine the best forming path by comparative test. Above all, we developed a data processing software based on Delphi platform for the alveolar bone mode, making it possible to model file slicing and path planning. The proposed four optimal paths can be expressed by software. And those paths can be converted into G-code, in order to input them into equipment to process. Adopting the biocompatible, biodegradable, hydroxyapatite(HAP) and sodium alginate(SA) as the molding material, we used self-developed 3D printing equipment and pneumatic extrusion deposition shaping process to manufacture the alveolar bones with the same specification under different paths. Then, for the macro characterization, microstructure, mechanical properties and biological properties of alveolar bones, by analyzing and comparing, we found that the model formed by inclined 45° straight cross scan can be the optimal choice to bone defects repair. The optimization experiments of forming path and data processing software development for the alveolar bone can provide a reference for the study of bone tissue engineering materials.