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Background: In the contemporary prosthetics almost any restoration could be digitally designed, but the final process of materializing still encounters some serious obstacles. The conventional approach for pattern fabrication has many disadvantages and issues, that are overcome and solved by the integration of modern concepts, which utilize the CAD/CAM and 3D-printing processing. Materials and Methods: For the purpose of the study STL-files of prior generated and morphologically different crown’s patterns are used. The patterns are modified by non-medical software for 3D-editioning by generating a custom-made, digitally-designed casting system and arranging its various components to the known casting cone dimensions. This allows all the components of the sprue system to be materialized as a single object. Results. The designed sprue system is successfully materialized and prepared for investment. Conclusion: The conventional approach by 3D printing of patterns is very convenient method, but there are some issues with the fabrication of the sprue system made of wax. These problems could be overcome by reduction of wax usage and digital designing of the whole sprue system and 3D-printing it as a single object.

Digital casting cone and sprue fabrication for 3D printed patterns designed for casting dental alloys