The initial stability after implantology is paramount to the survival of the dental implant, and the surface roughness of the implant plays a vital role in this regard. The characterisation of surface topography is a complicated branch of metrology, with a huge range of parameters available. Each parameter contributes significantly towards the survival and mechanical properties of three-dimensional printed specimens. The purpose of this paper is to experimentally investigate the effect of surface roughness of three-dimensional printed dental implants and three-dimensional printed dogbone tensile samples under areal height parameters, amplitude parameters (average of ordinates), skewness parameters and mechanical properties. During the experiment, roughness values were analysed, and the results showed that the skewness parameter demonstrated a minimum value of 0.59%. The three-dimensional printed dental implant recorded the arithmetic mean deviation of the assessed profile with a 3.4-mm diameter at 43.23% and the three-dimensional printed dental implant with a 4.3-mm diameter at 26.18%. Samples with a complex geometry exhibited a higher roughness surface, which was the greatest difficulty of additive manufacturing when evaluating surface finish. The results show that when the ultimate tensile stress decreases from 968.35 to 955.25 MPa, the arithmetic mean deviation increases by 1.4%, and when ultimate tensile stress increases to 961.18 MPa, the arithmetic mean deviation increases by 0.6%. When the cycle decreases from 262,142 to 137,433, the arithmetic mean deviation shows that less than a 90.74% increase in the cycle is obtained. For the three-dimensional printed dental implants, the higher the surface roughness, the lower the mechanical properties, ultimately leading to decreased implant life and poor performance.

中文翻译：

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热处理后3D打印钛Ti-64 ELI对表面粗糙度和力学性能影响的实验研究

种植牙后的初始稳定性对种植牙的成活至关重要，种植牙的表面粗糙度在这方面起着至关重要的作用。表面形貌的表征是计量学的一个复杂分支，可用的参数范围很大。每个参数对 3D 打印样本的生存和机械性能都有显着影响。本文的目的是通过实验研究3D打印牙种植体和3D打印狗骨拉伸样品的表面粗糙度在面高参数、振幅参数（纵坐标的平均值）、偏度参数和力学性能下的影响。在实验过程中，分析了粗糙度值，结果表明，偏度参数的最小值为 0.59%。三维打印牙种植体记录的评估轮廓的算术平均偏差为 3.4 毫米直径为 43.23%，三维打印牙种植体直径为 4.3 毫米为 26.18%。具有复杂几何形状的样品表现出更高的粗糙度表面，这是评估表面光洁度时增材制造的最大困难。结果表明，当极限拉应力从968.35降低到955.25 MPa时，算术平均偏差增加1.4%，当极限拉应力增加到961.18 MPa时，算术平均偏差增加0.6%。当周期从 262142 减少到 137433 时，算术平均偏差显示小于 90。获得了 74% 的周期增加。对于三维打印的牙种植体，表面粗糙度越高，机械性能越低，最终导致种植体寿命下降和性能不佳。