three types of fibre post systems were selected for this study. ENA Post (Micerium), Anatomical Post (Dentalica), and Endo Light-Post (RTD) were luted in prepared root canals, using proprietary adhesive system and resin cement. Each group was divided into three subgroups (n=10). For each subgroup, a different technique was used to place the luting agent into post space: using a lentulo spiral; applying the cement onto the post surface; injecting the material with a specific syringe. A push-out test was performed on sections from apical, middle and coronal parts of each specimen. All fractured specimens were observed using a scanning electron microscope to identify the types of failure.
The best results with the push-out test were obtained when the luting agent was brought into the post space with lentulo spirals or specific syringes. Only ENA Post system showed similar bond strength values independently from the application method of the luting agent.
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