RT Journal Article
T1 Metal release from ceramic coatings for dental implants
A1 Mohedano Sánchez, Marta
A1 Matykina, Endzhe
A1 Arrabal Durán, Raúl
A1 Merino Casals, María Concepción
AB ObjectivesTwo types of ceramic coatings on commercially pure titanium for dental implant applications with different Ca/P ratios in the range from 1.5 to 4.0, and two different thicknesses (∼5 and ∼15 μm) were examined with the aim of underpinning the effect of coating composition, thickness and microstructure on the corrosion behavior and hydroxyapatite forming ability in SBF.MethodsBioactive coatings were formed on Ti by plasma electrolytic oxidation (PEO). The composition, structure, and morphology of the materials were characterized before and after the immersion in simulated body fluid solution (SBF) at 37 °C for up to 4 weeks. All the materials were screened with respect to metal ion release into SBF.ResultsOnly thick PEO coating with overstoichiometric Ca/P ratio of 4.0 exhibited capacity to induce the precipitation of hydroxyapatite over the short period of 1 week. Long term Ti4+ ion release from all PEO-coated materials was 2–3 times lower than from the uncoated Ti. Metal ion release is attributed mostly to chemical dissolution of the coating at initial stages of immersion.SignificanceThe long term stability was greater for thin PEO coating with overstoichiometric Ca/P ratio of 2.0, which exhibited ∼95 ng cm−2 of Ti4+ ions release over 4 weeks. Thin PEO coatings present economically more viable option.
PB Elsevier
YR 2014
FD 2014
LK https://hdl.handle.net/20.500.14352/124139
UL https://hdl.handle.net/20.500.14352/124139
LA eng
NO M. Mohedano, E. Matykina, R. Arrabal, A. Pardo, M.C. Merino, Metal release from ceramic coatings for dental implants, Dental Materials, Volume 30, Issue 3, 2014, Pages e28-e40, ISSN 0109-5641, https://doi.org/10.1016/j.dental.2013.12.011.
DS Docta Complutense
RD 12 abr 2026