Faculty Publications
Permanent URI for this communityhttps://idr.nitk.ac.in/handle/123456789/18736
Publications by NITK Faculty
Browse
2 results
Search Results
Item Processing and characterization of egg shell derived nano-hydroxyapatite synthetic bone for Orthopaedic and Arthroscopy implants and substitutes in dentistry(Elsevier Ltd, 2023) Santosh Kumar, B.Y.; Kumar, G.C.; Shahapurkar, K.; Tirth, V.; Algahtani, A.; Al-Mughanam, T.; Alghtani, A.H.; Murthy, H.C.The present work is focused on the nano-Hydroxyapatite (nHAp) synthesis with two different Indian breed Aseel and Kadaknath eggshells. The alloplast implants were developed through the foam replica method with polyurethane 45-PPI as a porous template. The synthesized nHAp was characterized by Field Emission Scanning Electron Microscopy (FE-SEM), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The FE-SEM images of the nHAp showed the one dimensional clustered nanoparticles and the X-ray diffraction spectrum confirms that the major phase was hydroxyapatite with a small trace of β-tricalcium phosphate. The maximum compression strength of the sample was 5.49 ± 0.12 MPa which is in the range of the compression strength of human trabecular bone. The thermal and degradability studies results confirmed that these are highly stable and provides necessary a resorption needed for new bone tissue formation. Besides, the antimicrobial activity against tested human microbiome are satisfactory and the cell viability towards MG 63 human osteoblast-like cells provides a potential pathway for developing the nHAp implants for bone tissue engineering. © 2023 Elsevier LtdItem Optimizing dental implant design parameters through orthotropic properties of bone: a DOE-based approach(Springer-Verlag Italia s.r.l., 2025) Singh, R.K.; Verma, K.; Kumar, G.C.; Doddamani, S.Dental implant research has provided insights into the effects of thread design and occlusal loading rate on stress distribution within implants and adjacent bone structures. However, ongoing advancements in materials necessitate further investigation to optimize implant performance through a thorough understanding of design parameters. This study developed a comprehensive three-dimensional CAD model of dental implants, incorporating cortical and cancellous bone, crown, and various thread types (V type, buttress, and trapezoidal threads). Multiple thread design parameters (pitch, length, angle, and depth) were varied to analyze their impact on stress distribution. Taguchi's design of experiments, combined with finite element analysis, was employed to explore stress distribution around dental implants. The implant material used was Ti6Al7Nb alloy, comprising 90% titanium, 6% aluminium, and 7% niobium. Von Mises stresses were compared to identify the optimal design. Taguchi's analysis revealed that raising all parameters except pitch reduced implant stress. However, for trapezoidal and buttress designs, increasing pitch resulted in higher stress levels. A confirmation experiment, utilizing the developed regression equation, validated these findings. Comparative analysis between simulation and statistical results showed a close match across all cases; with an error rate of less than 10%. These findings underscore the reliability and accuracy of the research outcomes, emphasizing the significance of identified thread types and their impacts on implant stress. Further research in this area could lead to advancements in dental implant design, enhancing patient outcomes and implant longevity. © The Author(s), under exclusive licence to Springer-Verlag France SAS, part of Springer Nature 2025.