The bio-compatible dental implant designed by using non-stochastic porosity produced by Electron Beam Melting (EBM)

摘要

The application of non-stochastic lattice structures for building a bio-compatible dental abutment is investigated. The bio-compatible dental implant should mimic the micro-motion of the natural tooth. Three different lattice structures including cross, honeycomb, and octahedral structures with different unit cell sizes were employed to produce lattice abutment made of Ti-6Al-4V by Electron Beam Melting (EBM). According to the results, by increasing the unit cell size, abutments showed more deformation; however, the maximum tolerated normal force decreased. The octahedral lattice structure with 2mm unit cell size showed the best mechanical behavior under 400 N normal biting force, and was selected to investigate the effect of biting force angle on the stress distribution developed in lattice abutment. Numerical analysis showed that α = 30° is a critical biting force angle, for which the maximum equivalent stress increased noticeably.