TY  - JOUR
AU  - Stamenković, Dejan
AU  - Popović, Miljana
AU  - Rudolf, Rebeka
AU  - Zrilić, Milorad
AU  - Raić, Karlo
AU  - Obradović Đuričić, Kosovka
AU  - Stamenković, Dragoslav
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6377
AB  - Since additive technologies in dentistry are gradually replacing metal casting technology, it is necessary to evaluate new dental constructions intended for the development of removable partial denture frameworks. The aim of this research was to evaluate the microstructure and mechanical properties of 3D-printed, laser-melted and -sintered Co–Cr alloys, and perform a comparative study with Co–Cr castings for the same dental purposes. The experiments were divided into two groups. The first group consisted of samples produced by conventional casting of the Co–Cr alloy. The second group consisted of 3D-printed, laser-melted and -sintered specimens produced from a Co–Cr alloy powder divided into three subgroups, depending on the technological parameters chosen for manufacturing (angle, location and heat treatment). Examination of the microstructure was carried out by classical metallographic sample preparation, using optical microscopy and scanning electron microscopy with energy dispersive X-ray spectroscopy (EDX) analysis. A structural phase analysis was also performed by XRD. The mechanical properties were determined using a standard tensile test. The microstructure observation showed a dendritic character in the case of castings, while in the case of 3D-printed, laser-melted and -sintered Co–Cr alloys, the microstructure was typical for additive technologies. The XRD phase analysis confirmed the presence of Co–Cr phases (ε and γ). The results of the tensile test showed remarkably higher yield and tensile strength values and slightly lower elongation of the 3D-printed, laser-melted and -sintered samples than those produced by conventional casting.
PB  - MDPI
T2  - Materials
T1  - Comparative Study of the Microstructure and Properties of Cast-Fabricated and 3D-Printed Laser-Sintered Co–Cr Alloys for Removable Partial Denture Frameworks
IS  - 8
SP  - 3267
VL  - 16
DO  - 10.3390/ma16083267
ER  - 

@article{
author = "Stamenković, Dejan and Popović, Miljana and Rudolf, Rebeka and Zrilić, Milorad and Raić, Karlo and Obradović Đuričić, Kosovka and Stamenković, Dragoslav",
year = "2023",
abstract = "Since additive technologies in dentistry are gradually replacing metal casting technology, it is necessary to evaluate new dental constructions intended for the development of removable partial denture frameworks. The aim of this research was to evaluate the microstructure and mechanical properties of 3D-printed, laser-melted and -sintered Co–Cr alloys, and perform a comparative study with Co–Cr castings for the same dental purposes. The experiments were divided into two groups. The first group consisted of samples produced by conventional casting of the Co–Cr alloy. The second group consisted of 3D-printed, laser-melted and -sintered specimens produced from a Co–Cr alloy powder divided into three subgroups, depending on the technological parameters chosen for manufacturing (angle, location and heat treatment). Examination of the microstructure was carried out by classical metallographic sample preparation, using optical microscopy and scanning electron microscopy with energy dispersive X-ray spectroscopy (EDX) analysis. A structural phase analysis was also performed by XRD. The mechanical properties were determined using a standard tensile test. The microstructure observation showed a dendritic character in the case of castings, while in the case of 3D-printed, laser-melted and -sintered Co–Cr alloys, the microstructure was typical for additive technologies. The XRD phase analysis confirmed the presence of Co–Cr phases (ε and γ). The results of the tensile test showed remarkably higher yield and tensile strength values and slightly lower elongation of the 3D-printed, laser-melted and -sintered samples than those produced by conventional casting.",
publisher = "MDPI",
journal = "Materials",
title = "Comparative Study of the Microstructure and Properties of Cast-Fabricated and 3D-Printed Laser-Sintered Co–Cr Alloys for Removable Partial Denture Frameworks",
number = "8",
pages = "3267",
volume = "16",
doi = "10.3390/ma16083267"
}

Stamenković, D., Popović, M., Rudolf, R., Zrilić, M., Raić, K., Obradović Đuričić, K.,& Stamenković, D.. (2023). Comparative Study of the Microstructure and Properties of Cast-Fabricated and 3D-Printed Laser-Sintered Co–Cr Alloys for Removable Partial Denture Frameworks. in Materials
MDPI., 16(8), 3267.
https://doi.org/10.3390/ma16083267

Stamenković D, Popović M, Rudolf R, Zrilić M, Raić K, Obradović Đuričić K, Stamenković D. Comparative Study of the Microstructure and Properties of Cast-Fabricated and 3D-Printed Laser-Sintered Co–Cr Alloys for Removable Partial Denture Frameworks. in Materials. 2023;16(8):3267.
doi:10.3390/ma16083267 .

Stamenković, Dejan, Popović, Miljana, Rudolf, Rebeka, Zrilić, Milorad, Raić, Karlo, Obradović Đuričić, Kosovka, Stamenković, Dragoslav, "Comparative Study of the Microstructure and Properties of Cast-Fabricated and 3D-Printed Laser-Sintered Co–Cr Alloys for Removable Partial Denture Frameworks" in Materials, 16, no. 8 (2023):3267,
https://doi.org/10.3390/ma16083267 . .