A new Ti-5Ag alloy for customized prostheses by three-dimensional printing (3DP).
Three important considerations in the fabrication of customized cranio-maxillofacial prostheses are geometric precision, material strength, and biocompatibility. Three-dimensional printing (3DP) is a rapid part-fabrication process that can produce complex parts with high precision. The aim of this study was to design, synthesize by 3DP, and characterize a new Ti-5Ag (wt%) alloy. Silver nitrate was found to be an appropriate inorganic binder for the Ti powder-based skeleton, and the optimum sintering parameters for full densification were determined. The hardness of the Ti-5Ag alloy was shown to be much higher than that of a pure titanium sample. Potentiodynamic measurements, carried out in saline solution at body temperature, showed that the Ti-5Ag alloy had good passivation behavior, similar to that of pure titanium. It is concluded that the Ti-Ag system may be suitable for fabrication of customized prostheses by 3DP.
Hong
S B
SB
Harvard School of Dental Medicine, Boston, MA, USA.
Eliaz
N
N
Leisk
G G
GG
Sach
E M
EM
Latanision
R M
RM
Allen
S M
SM
D000497:Alloys / Q000138:chemical synthesis / Q000737:chemistry*; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003198:Computer Simulation; D017076:Computer-Aided Design; D003343:Corrosion; D003461:Crystallography; D004563:Electrochemistry; D006244:Hardness; D006358:Hot Temperature; D006801:Humans; D021621:Imaging, Three-Dimensional; D008447:Maxillofacial Prosthesis; D008669:Metallurgy; D008855:Microscopy, Electron, Scanning; D011199:Potentiometry; D011474:Prosthesis Design; D012834:Silver / Q000737:chemistry*; D012835:Silver Nitrate / Q000737:chemistry; D012965:Sodium Chloride; D013499:Surface Properties; D013696:Temperature; D014025:Titanium / Q000737:chemistry*; D014618:Vacuum; D014961:X-Ray Diffraction
D000497:Alloys; D012834:Silver; D012965:Sodium Chloride; D012835:Silver Nitrate; D014025:Titanium