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Surface characteristics of Ti‐10Ta‐10Nb alloy modified by hydrogen peroxide treatment for dental implants
Author(s) -
Cho SuckKyu,
Park IlSong,
Lee SookJeong,
Kim KyoungA,
Park JuMi,
Ahn SeungGeun,
Song KwangYeob,
Yoon DongJoo,
Lee MinHo
Publication year - 2012
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.3781
Subject(s) - simulated body fluid , materials science , biocompatibility , apatite , alloy , titanium , microstructure , surface roughness , surface modification , metallurgy , wetting , corrosion , titanium alloy , precipitation , vickers hardness test , contact angle , nuclear chemistry , chemical engineering , composite material , scanning electron microscope , chemistry , physics , meteorology , engineering
The use of titanium‐based alloys as biomaterials is becoming more common because they have a reduced elastic modulus, superior biocompatibility, specific strength, good corrosion resistance, superior strain control, and fatigue resistance compared to conventional stainless steel and CoCr alloys. However, when implanted into the human body these metals are problematic because they do not directly bond with living bone. Surface treatments play an important role in nucleating calcium phosphate deposition on a surgical titanium alloy implant. The purpose of this study is to examine whether the precipitation of apatite on Ti10Ta10Nb alloy is affected by surface modification in H 2 O 2 solution. Specimens were chemically treated with a solution containing 30 wt% H 2 O 2 at 80 °C for 1 h, and subsequently heat treated at 400 °C for 1 h. All specimens were immersed in SBF (Simulated Body Fluid) with a pH of 7.4 at 36.5 °C for seven days, and the surfaces were examined with XRD, SEM, EDX and in vitro testing. The microstructure analysis of the Ti10Ta10Nb alloy after etching with Keller's etchant showed a Widmanstatten pattern. The micro‐Vickers hardness number was 236.44 ± 4.99, and surface roughness was increased by the surface treatment. The wettability after surface treatment was better than on the nontreated surface. Resistance to cytotoxicity was decreased by the chemical surface treatment ( P < 0.05). Copyright © 2011 John Wiley & Sons, Ltd.