Čairović, Aleksandra

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  • Čairović, Aleksandra (3)
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Author's Bibliography

Effect of recasting on the structure and properties of commercial Ni-Cr dental alloy

Maksimović, Vesna; Čairović, Aleksandra; Cvijović-Alagić, Ivana

(2022)

TY  - JOUR
AU  - Maksimović, Vesna
AU  - Čairović, Aleksandra
AU  - Cvijović-Alagić, Ivana
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10473
AB  - The Ni-Cr dental alloys are among the oldest restorative materials used in dentistry. Reuse of previously melted and cast dental alloys is a routine procedure used in dental laboratories to reduce the cost of dental restorations. Continuous reuse of the commercial Ni-Cr dental alloys, such as Wirron 99, can change numerous properties of these materials, and therefore the present study was aimed to establish the outcome of several recasting cycles on the Wirron 99 alloy properties. Obtained results reveal that alloy recasting resulted in the appearance of typical dendritic microstructures where the chemical composition of dendritic and interdendritic regions differs. Moreover, the results of the present study showed that the number of recasting cycles has a significant effect on the alloy microstructure, structure, electrical conductivity, and hardness
T2  - Journal of Innovative Materials in Extreme Conditions
T1  - Effect of recasting on the structure and properties of commercial Ni-Cr dental alloy
VL  - 3
IS  - 1
SP  - 1
EP  - 8
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10473
ER  - 
@article{
author = "Maksimović, Vesna and Čairović, Aleksandra and Cvijović-Alagić, Ivana",
year = "2022",
abstract = "The Ni-Cr dental alloys are among the oldest restorative materials used in dentistry. Reuse of previously melted and cast dental alloys is a routine procedure used in dental laboratories to reduce the cost of dental restorations. Continuous reuse of the commercial Ni-Cr dental alloys, such as Wirron 99, can change numerous properties of these materials, and therefore the present study was aimed to establish the outcome of several recasting cycles on the Wirron 99 alloy properties. Obtained results reveal that alloy recasting resulted in the appearance of typical dendritic microstructures where the chemical composition of dendritic and interdendritic regions differs. Moreover, the results of the present study showed that the number of recasting cycles has a significant effect on the alloy microstructure, structure, electrical conductivity, and hardness",
journal = "Journal of Innovative Materials in Extreme Conditions",
title = "Effect of recasting on the structure and properties of commercial Ni-Cr dental alloy",
volume = "3",
number = "1",
pages = "1-8",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10473"
}
Maksimović, V., Čairović, A.,& Cvijović-Alagić, I.. (2022). Effect of recasting on the structure and properties of commercial Ni-Cr dental alloy. in Journal of Innovative Materials in Extreme Conditions, 3(1), 1-8.
https://hdl.handle.net/21.15107/rcub_vinar_10473
Maksimović V, Čairović A, Cvijović-Alagić I. Effect of recasting on the structure and properties of commercial Ni-Cr dental alloy. in Journal of Innovative Materials in Extreme Conditions. 2022;3(1):1-8.
https://hdl.handle.net/21.15107/rcub_vinar_10473 .
Maksimović, Vesna, Čairović, Aleksandra, Cvijović-Alagić, Ivana, "Effect of recasting on the structure and properties of commercial Ni-Cr dental alloy" in Journal of Innovative Materials in Extreme Conditions, 3, no. 1 (2022):1-8,
https://hdl.handle.net/21.15107/rcub_vinar_10473 .

Laser surface modification of metallic implant materials

Laketić, Slađana; Rakin, Marko; Čairović, Aleksandra; Maksimović, Vesna; Cvijović-Alagić, Ivana

(2019)

TY  - JOUR
AU  - Laketić, Slađana
AU  - Rakin, Marko
AU  - Čairović, Aleksandra
AU  - Maksimović, Vesna
AU  - Cvijović-Alagić, Ivana
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11337
AB  - Metallic biomaterials are most commonly used as hard-tissue replacements because of their favorable mechanical features and excellent biocompatibility. The objective of this paper is to present an overview of diverse surface modification techniques, with a special emphasis on the laser surface modification method, as well as diverse characterization techniques used for investigating the impact of the surface modification process on metallic implant materials' properties. Moreover, the effect of laser radiation on the surface its and mechanical characteristics, as well as on the structure of metallic bioimplants, is presented. The study of influence of high-intensity laser radiation on metallic materials' surface includes primarily investigations of the surface morphology modifications and specific surface structure formation since their presence enables enhanced osseointegration.
AB  - Metalni biomaterijali se najčešće koriste za izradu implantanata čvrstih strukturnih delova ljudskog tela zbog svojih dobrih mehaničkih karakteristika i odlične biokompatibilnosti. Cilj rada je da se pregledno predstave različite tehnike površinske modifikacije implantantnih materijala sa posebnim osvrtom na metodu laserske modifikacije površine, kao i mnogobrojne karakterizacione metode za ispitivanje uticaja procesa površinske modifikacije na svojstva metalnih implantantnih materijala. Osim toga, predstavljen je i razmatran uticaj laserskog zračenja na površinske i mehaničke karakteristike, kao i na strukturu metalnih bioimplantanata. Ispitivanje uticaja laserskog zračenja visokog intenziteta na površinu metalnih materijala prvenstveno obuhvata ispitivanje morfoloških površinskih promena i formiranja specifičnih površinskih struktura, koje doprinose poboljšanju oseointegracije metalnih implantanata.
T2  - Srpski arhiv za celokupno lekarstvo
T1  - Laser surface modification of metallic implant materials
T1  - Laserska površinska modifikacija metalnih implantantnih materijala
VL  - 147
IS  - 7-8
SP  - 497
EP  - 501
DO  - 10.2298/SARH181126054L
ER  - 
@article{
author = "Laketić, Slađana and Rakin, Marko and Čairović, Aleksandra and Maksimović, Vesna and Cvijović-Alagić, Ivana",
year = "2019",
abstract = "Metallic biomaterials are most commonly used as hard-tissue replacements because of their favorable mechanical features and excellent biocompatibility. The objective of this paper is to present an overview of diverse surface modification techniques, with a special emphasis on the laser surface modification method, as well as diverse characterization techniques used for investigating the impact of the surface modification process on metallic implant materials' properties. Moreover, the effect of laser radiation on the surface its and mechanical characteristics, as well as on the structure of metallic bioimplants, is presented. The study of influence of high-intensity laser radiation on metallic materials' surface includes primarily investigations of the surface morphology modifications and specific surface structure formation since their presence enables enhanced osseointegration., Metalni biomaterijali se najčešće koriste za izradu implantanata čvrstih strukturnih delova ljudskog tela zbog svojih dobrih mehaničkih karakteristika i odlične biokompatibilnosti. Cilj rada je da se pregledno predstave različite tehnike površinske modifikacije implantantnih materijala sa posebnim osvrtom na metodu laserske modifikacije površine, kao i mnogobrojne karakterizacione metode za ispitivanje uticaja procesa površinske modifikacije na svojstva metalnih implantantnih materijala. Osim toga, predstavljen je i razmatran uticaj laserskog zračenja na površinske i mehaničke karakteristike, kao i na strukturu metalnih bioimplantanata. Ispitivanje uticaja laserskog zračenja visokog intenziteta na površinu metalnih materijala prvenstveno obuhvata ispitivanje morfoloških površinskih promena i formiranja specifičnih površinskih struktura, koje doprinose poboljšanju oseointegracije metalnih implantanata.",
journal = "Srpski arhiv za celokupno lekarstvo",
title = "Laser surface modification of metallic implant materials, Laserska površinska modifikacija metalnih implantantnih materijala",
volume = "147",
number = "7-8",
pages = "497-501",
doi = "10.2298/SARH181126054L"
}
Laketić, S., Rakin, M., Čairović, A., Maksimović, V.,& Cvijović-Alagić, I.. (2019). Laser surface modification of metallic implant materials. in Srpski arhiv za celokupno lekarstvo, 147(7-8), 497-501.
https://doi.org/10.2298/SARH181126054L
Laketić S, Rakin M, Čairović A, Maksimović V, Cvijović-Alagić I. Laser surface modification of metallic implant materials. in Srpski arhiv za celokupno lekarstvo. 2019;147(7-8):497-501.
doi:10.2298/SARH181126054L .
Laketić, Slađana, Rakin, Marko, Čairović, Aleksandra, Maksimović, Vesna, Cvijović-Alagić, Ivana, "Laser surface modification of metallic implant materials" in Srpski arhiv za celokupno lekarstvo, 147, no. 7-8 (2019):497-501,
https://doi.org/10.2298/SARH181126054L . .
1

Recasting as a booster of Ag-Pd alloy cytotoxicity: Induction of cell senescence prior to mass cell death

Čairović, Aleksandra; Stanimirović, Dragan; Krajnović, Tamara T.; Dojčinović, Biljana P.; Maksimović, Vesna; Cvijović-Alagić, Ivana

(2019)

TY  - JOUR
AU  - Čairović, Aleksandra
AU  - Stanimirović, Dragan
AU  - Krajnović, Tamara T.
AU  - Dojčinović, Biljana P.
AU  - Maksimović, Vesna
AU  - Cvijović-Alagić, Ivana
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8341
AB  - The biological quality and chemical composition of alloys used in dental practice change during heat treatment. Often the residues of the previous cast are not disposed of but are reused and recycled until consumed. Thus, manufactured dental restorations have modified biological quality and chemical composition, and compromised biocompatibility. The aim of this study was to investigate the influence of repeated casting on the cytotoxicity of the silver-palladium (Ag-Pd) alloy. Our results showed that repeated casting of the Ag-Pd dental alloy affected its biocompatibility by promoting toxicity against transformed fibroblasts in a contact-independent manner. A strong decrease in cell proliferation, induction of senescence and massive cell death were observed in cultures exposed only to a medium previously incubated with dental alloy samples. The obtained data indicated that toxicity mediated by the accumulation of the Ag, Pd, Cu and Zn cations released from the Ag-Pd material was enhanced by recasting. The induction of cell senescence and subsequent apoptotic and necrotic death were accompanied by amplified intracellular production of reactive oxygen and nitrogen species, suggesting their involvement in the cell destruction process. Therefore, compromised biocompatibility after recasting with the Ag-Pd alloy can be the cause of serious local cell destruction, as observed in clinical practice. © 2019 by the Serbian Biological Society.
T2  - Archives of Biological Sciences
T1  - Recasting as a booster of Ag-Pd alloy cytotoxicity: Induction of cell senescence prior to mass cell death
VL  - 71
IS  - 2
SP  - 347
EP  - 356
DO  - 10.2298/ABS190305017C
ER  - 
@article{
author = "Čairović, Aleksandra and Stanimirović, Dragan and Krajnović, Tamara T. and Dojčinović, Biljana P. and Maksimović, Vesna and Cvijović-Alagić, Ivana",
year = "2019",
abstract = "The biological quality and chemical composition of alloys used in dental practice change during heat treatment. Often the residues of the previous cast are not disposed of but are reused and recycled until consumed. Thus, manufactured dental restorations have modified biological quality and chemical composition, and compromised biocompatibility. The aim of this study was to investigate the influence of repeated casting on the cytotoxicity of the silver-palladium (Ag-Pd) alloy. Our results showed that repeated casting of the Ag-Pd dental alloy affected its biocompatibility by promoting toxicity against transformed fibroblasts in a contact-independent manner. A strong decrease in cell proliferation, induction of senescence and massive cell death were observed in cultures exposed only to a medium previously incubated with dental alloy samples. The obtained data indicated that toxicity mediated by the accumulation of the Ag, Pd, Cu and Zn cations released from the Ag-Pd material was enhanced by recasting. The induction of cell senescence and subsequent apoptotic and necrotic death were accompanied by amplified intracellular production of reactive oxygen and nitrogen species, suggesting their involvement in the cell destruction process. Therefore, compromised biocompatibility after recasting with the Ag-Pd alloy can be the cause of serious local cell destruction, as observed in clinical practice. © 2019 by the Serbian Biological Society.",
journal = "Archives of Biological Sciences",
title = "Recasting as a booster of Ag-Pd alloy cytotoxicity: Induction of cell senescence prior to mass cell death",
volume = "71",
number = "2",
pages = "347-356",
doi = "10.2298/ABS190305017C"
}
Čairović, A., Stanimirović, D., Krajnović, T. T., Dojčinović, B. P., Maksimović, V.,& Cvijović-Alagić, I.. (2019). Recasting as a booster of Ag-Pd alloy cytotoxicity: Induction of cell senescence prior to mass cell death. in Archives of Biological Sciences, 71(2), 347-356.
https://doi.org/10.2298/ABS190305017C
Čairović A, Stanimirović D, Krajnović TT, Dojčinović BP, Maksimović V, Cvijović-Alagić I. Recasting as a booster of Ag-Pd alloy cytotoxicity: Induction of cell senescence prior to mass cell death. in Archives of Biological Sciences. 2019;71(2):347-356.
doi:10.2298/ABS190305017C .
Čairović, Aleksandra, Stanimirović, Dragan, Krajnović, Tamara T., Dojčinović, Biljana P., Maksimović, Vesna, Cvijović-Alagić, Ivana, "Recasting as a booster of Ag-Pd alloy cytotoxicity: Induction of cell senescence prior to mass cell death" in Archives of Biological Sciences, 71, no. 2 (2019):347-356,
https://doi.org/10.2298/ABS190305017C . .