Marginal porosity of light activated composites in relation to use of intermediate low‐viscous resins

The marginal porosity of four light activated restoratives (Command, Durafill, Prismafill and Silux) was investigated in extracted human teeth. It was found that the use of a low-viscous resin prior to application of the restorative materials significantly reduced the marginal porosity in both acid etched enamel cavities and EDTA-cleaned dentin cavities.