محمدمهدي اكبري عيدگاهي

In this research, the application of Monticellite with the chemical composition of CaO-MgO-SiO2 as a bioceramic in the field of dental implant coating was eva‎luated. First, Monticellite ceramic was synthesized by sol-gel method and then the optimization of electrolyte was investigated through the dispersion of Monticellite nanoparticles in ethanol with a 5:1 (g/L) ratio and zeta potential of +2.5 ± 0.56 mV and particle size of 0.565 ± 0.02 µm were chosen as the optimum parameters. During the optimization process, acids and bases were used to adjust the pH but the results demonstrated that Monticellite possesses a strong alkaline trait that can significantly alter the pH. Coating by electrophoretic was done using 20 V for 5 min. The results of surface analyses showed that Monticellite was absorbed on Ti substrate with approximately 20 μm thickness which has an irregular type of morphology without cracks. Moreover, the surface has a roughness in the nanoscale (Sa = 9 nm) and also increased the hydrophilicity of the surface. Further, the bioactivity of the surface was eva‎luated and it showed strong ability in apatite formation and the rate of biodegradation after immersion in HBSS buffer for 1 and 2 weeks was 0.02 and 0.03 mg of ceramic per day which is equal to 1.75 and 2.21 % of the coated mass, respectively. Moreover, the results of MTT tests showed that cells that were subjected to the ceramic had a higher proliferation rate than Ti and the control group. We concluded that Monticellite ceramic has high potential as dental implant ceramic and with further investigations, it can begin the new generation of coating ceramics.

مونتيسلايت , ايمپلنت , الكتروفورتيك , نانوتكنولوژي

Monticellite , Implant , Electrophoretic , Nanotechnology

Mohammadmahdi Akbari Edgahi

Seyed Morteza Naghib