This paper presents a comparison of the impact of milling technology in the computer numerically controlled (CNC) machining centre and selective laser sintering (SLS) and on the structure and properties of solid Ti6Al4V alloy. It has been shown that even small changes in technological conditions in the SLS manufacturing variant significantly affect changes from two to nearly two and a half times in tensile and bending strengths. Both the tensile and bending strength obtained in the most favourable manufacturing variant by the SLS method is over 25% higher than in the case of cast materials subsequently processed by milling. Plug-and-play SLS conditions provide about 60% of the possibilities. Structural, tribological and electrochemical tests were carried out. In vitro biological tests using osteoblasts confirm the good tendency for the proliferation of live cells on the substrate manufactured under the most favourable SLS conditions. The use of SLS additive technology for the manufacturing of dental implants and abutments made of Ti6Al4V alloy in combination with the digitisation of dental diagnostics and computer-aided design and manufacture of computer-aided design/manufacturing (CAD/CAM) following the idea of Dentistry 4.0 is the best choice of technology for manufacturing of prosthetic and implant devices used in dentistry.

中文翻译：

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固态激光烧结或机加工Ti6Al4V合金在牙科种植体制造和牙科修复中的应用（根据牙科4.0概念）

本文比较了铣削技术在计算机数控（CNC）加工中心和选择性激光烧结（SLS）中的影响以及对固态Ti6Al4V合金的结构和性能的影响。已经显示出，在SLS制造变型中即使技术条件的微小变化也显着影响拉伸强度和弯曲强度的两倍至近两倍半的变化。通过SLS方法在最有利的制造方案中获得的拉伸强度和弯曲强度都比随后通过铣削加工的铸造材料高25％以上。即插即用SLS条件提供了大约60％的可能性。进行了结构，摩擦学和电化学测试。使用成骨细胞的体外生物学测试证实了在最有利的SLS条件下制造的基质上活细胞增殖的良好趋势。使用SLS添加剂技术制造Ti6Al4V合金制成的牙科植入物和基台，结合牙科诊断的数字化和计算机辅助设计，并按照牙科的理念制造计算机辅助设计/制造（CAD / CAM） 4.0是制造牙科用修复和植入设备的最佳技术选择。