Compressive and flexural behaviour of fibre reinforced endodontic posts.

Objectives: The aim of this study was to investigate the mechanical properties of five types of fibre-reinforced composite (FRC) posts and compare them with traditional metal post.

Methods: Five FRC posts and a metallic post having different geometry and type of fibre (glass, carbon or quartz fibre) were loaded to failure in compression and bending. The transverse sections of FRC posts were observed using SEM to evaluate the fracture mode and the percentage of fibres (compared with burn-off test).

Hydrogenated amorphous carbon nanopatterned film designs drive human bone marrow mesenchymal stem cell cytoskeleton architecture.

The interaction between stem cells and biomaterials with nanoscale topography represents a main route in the roadmap for tissue engineering-based strategies. In this study, we explored the interface between human bone marrow-derived mesenchymal stem cells (hBM-MSCs) and hydrogenated amorphous carbon (a-C:H) film designed with uniform, groove, or grid nanopatterns. In either case, hBM-MSCs preserved growth rate and multi-differentiation properties, suggesting that the films were biocompatible and suitable for stem cell culture.