Among many lightweight materials used in marine applications, sandwich structures with syntactic foam core are promising because of lower water uptake amid face-sheets damage. HDPE (high-density polyethylene) filament is to 3D print skin, and glass microballoon (GMB) reinforced filaments for the core. The optimized parameters prepare blends 20, 40, 60 volume % GMB HDPE. These foamed extruded fo...

background: the clinical success of sandwich technique depends on the strength of resin-modified glass ionomer cement (rmgic) bonding to both dentin and resin composite. therefore, the shear bond strength (sbs) of resin composite bonded to rmgic utilizing different resin adhesives versus a gic-based adhesive was compared. materials and methods: in this in vitro study, 84 holes (5×2 mm) were pre...