bulk density 10 Article 8 human 8 controlled study 7 Bulk density 6 Humans 6 article 5 Density functional theory 4 Electric fields 4 Liquids 4 Soils 4 Topology 4 in vitro study 4 moisture 4 Bulk state 3 Composite Resins 3 Computation theory 3 Cost effectiveness 3 Dental Leakage 3 Dental Restoration, Permanent 3 Electrodes 3 Heterojunctions 3 Ions 3 Microleakage 3 Scanning electron microscopy 3 Textures 3 X ray diffraction 3 adsorption 3 dental restoration 3 drug formulation 3