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Journal : IPTEK The Journal for Technology and Science

The Effect of Gamma Irradiation on HDPE/HA Composite as Candidate Material Dental Implant Pormauli Gultom; Sigit T. Wicaksono; Agung Purniawan; Sudirman Sudirman; Sulistiyoso Giat Sukaryo
IPTEK The Journal for Technology and Science Vol 31, No 1 (2020)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (604.557 KB) | DOI: 10.12962/j20882033.v31i1.5628

Abstract

Hydroxyapatite (HA) Ca10.P O4/6.OH/2 is the main component of calcium phosphate-based bone, which is most widely used in biomaterial applications because it has non-toxic and biocompatible properties. But if used alone, HA does not have excellent mechanical strength and is not resistant to pressure. High-Density Polyethylene (HDPE) is a high density of synthetic polymers, and hydroxyapatite (HA) is a vital bone component. Composites of them will make synthetic bones, with HDPE as matrix and HA as fillers. HDPE/HA composites with a composition variation of 0%, 5%, 10% HA were compacted and heated at 180°C for 90 minutes, and then irradiated at a dose of 60 kGy. The effect of adding HA composition and gamma irradiation was observed by hardness testing and characterized using XRD and FTIR. The results showed that the addition of HA increased the hardness of HDPE. From the XRD and FTIR analysis, there was no change in the composite phase after irradiation.
Effect of Screw Diameter in Femoral Fracture Fixation Modeled by Finite Element Method Muhammad Nashrullah; Belladina Clara Shinta; Mas Irfan P. Hidayat; Agung Purniawan; Yuli Setiyorini
IPTEK The Journal for Technology and Science Vol 28, No 1 (2017)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (816.751 KB) | DOI: 10.12962/j20882033.v28i1.2219

Abstract

Research in the field of biomechanics related to orthopedic implants is rapidly growing in the world, especially for fixation of fractured bone. Fixation is a surgery to locate and attach a plate pressed by screws at the fractured bone. Most of the fracture bones sited in femur. This research focuses on modeling and simulation of plate and screw made of SS316L material for the fixation of the fractured femur using finite element method (FEM). SS316L is a material with good biocompatibility, cheap, and ductile enough. Modeling and simulation done using ANSYS 15.0 software. Simulation results are stress, strain, and total deformation. It is obtained that optimum diameter of screw is 4.5 mm with respect to minimum value of von Mises stress and deformation.