## 5 Conclusions  
Knowledge of mechanical properties is a key insight to the successful application of porous structures in the production of bone implants. Titanium is successfully used in medical implants because it meets several biological and mechanical criteria. However, the mechanical properties of Ti-based materials differ from the properties of bones, which is undesirable because the most suitable replacement should possess mechanical characteristics as close as possible to the original biological bone. However, these differences can be largely eliminated by the suitable structure of the final titanium product, which does not adversely affect other desired properties of the implant, concerning the application to biological tissues. The presented study aimed to prepare samples with reduced weight and stress shielding effect suppression by introducing various types of porous structures. Porous samples with various pore sizes (200, 400, and 600 \(\upmu\)m) with trabecular and cubic topology were produced in certified medical software via the SLM method. The highest porosity and thus the lowest weight were achieved in the trabecular samples with a 600 \(\upmu\)m pore size. In general, the yield strength, tensile strength, and modulus of elasticity in-creased with a decrease in pore size. All tested samples showed optimal values of maximum stress and tensile strength. Trabecular structures with larger pores were evaluated as the most suitable to produce biomaterials with desired mechanical properties like those of human bone. In the future, the samples can be coated with ceramics or polymers to improve their biological and mechanical properties and cultured with biological tissue to study the process of osseeintegration, bone overgrowth, and adaptation.  
R.H.: conceptualization, methodology, writing--original draft, funding acquisition, supervision, project administration; M.S.: methodology, writing--original draft, formal analysis; Z.O.K.: writing--original draft, writing--review and editing, visualization; R.G.: writing--original draft, writing--review and editing, visualization; L.M.: software, writing--original draft, data curation, investigation; V.R.: software, data curation, investigation; T.T.: writing--original draft, data curation, investigation; M.K.: data curation, investigation; M.R.: data curation, investigation; R.O.: writing--review and editing, supervision, project administration; J.Z.: conceptualization, methodology, supervision. All authors have read and agreed to the published version of the manuscript.  
This work was supported by the Slovak Research and Development Agency under the contract No. APVV-16-0029, APVV-17-0008, APVV-17-0278, Scientific Grant Agency of the Ministry of Education, Science, Research and Sport of the Slovak Republic (project VEGA 1/0095/21 and VEGA 1/0179/19). The achieved results were created within the investigation of the project Stimuli for research and development no. 2018/14432:1-26 CO supported by the Ministry of Education of Science of Research and Sport and Centre of medical bio-additive research and the project implementation: \"Open scientific Integrated Infrastructure for the project: Center for Medical Bioadditive Research and Production (CEMBAM), code ITMS2014 +: 313011V358, supported by the Operational Programme Integrated Infrastructure, funded by the ERDF\".  
Not applicable.  
Data Availability Statement: Data available on request from the authors.  
The authors declare no conflict of interest.