The effect of adhesive resin cement, obturation material and root dentin location on the retention of glass fiber-reinforced composite resin posts.

Purpose: To assess the effects of adhesive resin cement, obturation material and dentin location on the retention of glass fiber-reinforced resin composite (FRRC) posts.

Methods: 60 root canals in single rooted teeth were obturated with three different protocols (n= 20), including no obturation material (Control), GuttaFlow and Gutta-percha. Spaces were prepared for glass (FRCR) posts.