Corrosion behavior of a new titanium alloy for dental implant applications in fluoride media

Electrochemical behavior of three CP titanium dental implants in artificial saliva

“…A comparison of the implants corrosion potentials in artificial saliva with published data is a difficult task as the OCP of CP-Ti is highly dependent on heat-and mechanical treatments, surface preparation of the samples and exposure time. For example Schiff 14 and Al-Mayouf 15 reported OCPs of +0.025 V/SCE and -0.331 V/SCE for CP-Ti in Fusayama artificial saliva, respectively. Figure 3 shows the polarization curves of the three Ti implants in artificial saliva.…”

Improvement in Surface Properties of Ti6Al4V Alloy by ZrN Thin Film

“…It is widely recognized that the wear and corrosion of a bio metallic is one of the most important parameters of implant surgery. Due to the optimum properties like corrosion resistance and biocompatibility [1][2][3], Ti6Al4V alloys are widely used in various areas such as artificial hip joints, bone plates, dental implants and aerospace [4][5][6]. The fundamental requirement of biomaterial is that the material and the tissue environment of the body should be coexisting without having any undesirable or inappropriate effect on each other.…”

Analysis of tribocorrosion behavior of biomedical powder metallurgy titanium alloys

“…Their study revealed that the amount of fluorides needed to hinder the integrity of the passive film Al-Mayouf et al [63] also observed high corrosion rates in neutral solutions with high fluoride concentrations and in acidic solutions with low fluoride concentrations while studying the corrosion behavior of Ti, Ti6Al4V and Ti-30Cu-10Ag in artificial saliva varying pH (3-7) and NaF concentration (0, 0.01, 0.05 and 0.5 M). Boere [64] observed a large decrease in polarization resistance with increasing fluoride concentration at pH 4 while no change was observed at pH7.…”

“…The presence of fluoride ions in the solution has been reported to alter the structure of the oxide layer causing it to be porous [63]. HF molecules can react on the titanium surface to give rise to titanium oxyfluorides in solid state.…”

“…HF molecules can react on the titanium surface to give rise to titanium oxyfluorides in solid state. The lattice parameter of these compounds is such that they induce many structural defects in the oxide coating, whose protection is considerably loosened [63]. …”