OICC Press Progress in Biomaterials 2194-0517 11 1 (March 2022) 2022 01 30 Drug infused Al2O3-bioactive glass coatings toward the cure of orthopedic infection 10.1007/s40204-022-00181-y EN P. Bargavi National Centre for Nanoscience and Nanotechnology, University of Madras, Chennai, 600 025, IN R. Riju Chandran National Centre for Nanoscience and Nanotechnology, University of Madras, Chennai, 600 025, IN D. Durgalakshmi Department of Medical Physics, Anna University, Chennai, 600 025, IN P. Rajashree CAS in Crystallography & Biophysics, University of Madras, Chennai, 600 025, IN R. Ramya Saveetha Dental College & Hospitals, SIMTS, Chennai, 600089, IN S. Balakumar National Centre for Nanoscience and Nanotechnology, University of Madras, Chennai, 600 025, IN Journal Article 2022 01 30 Abstract A unique implant coated substrate with dual-drug-eluting system exhibiting antibacterial, anti-inflammatory, and bone regenerative capacity has been fabricated using spray pyrolysis deposition (SPD) method. Bioglass (BG) and BG-alumina (BG-Al) composites coatings with different concentrations of Al incorporated on BG network over the Cp-Ti substrate were fabricated using SPD technique. Phase purity of BG and BG-Al composites were analyzed by XRD in which Na 2 Ca 2 Si 3 O 9 and β-Na 2 Ca 4 (PO 4 ) 2 SiO 4 ) and Na 7.15 (Al 7.2 Si 8.8 O 32 ) phases were formed. Surface morphology of the coated substrates was analyzed by SEM. Uniformity of the coatings were evaluated by surface profilometer and the uniform distribution the nanoparticles were confirmed with Elemental mapping. Systematically, each apatite layer formation on coated substrate was confirmed by immersing the samples for 1, 3, and 7 days in simulated body fluid and the needle-like structure was characterized using SEM. Cumulative release of Tetracycline hydrochloride (Tet) antibiotic and Dexamethasone (Dex) anti-inflammatory drug-loaded BG-Al and BG-Al composite-coated substrate were studied for 24 h. Antibacterial activity of the coated substrates were evaluated by time-dependent growth inhibition and minimal inhibitory concentration (MIC) assays in which BG-Al and BG-Al composite loaded with Tet showed considerable growth inhibition against S. aureus . Osteoblast-like cells (MG-63) exhibited profound proliferation with no cytotoxic effects which was due to release of Dex drug-coated substrates. Thus, surface modification of Cp-Ti substrate with BG, BG-Al composites coatings loaded with Tet and Dex drug can be considered for post-operative orthopedic implant infection application.