Endodontic treatment , method of cement application , and post pretreatment are factors that might significantly affect the retention of glass-fiber posts  into root canals mainly when cemented with regular resin cement .
Self-adhesive resin cements were found to be less technique-sensitive to luting procedures as compared with regular resin cements
This study aim ed to identify factors that can affect the retention of glass fiber posts to intra-radicular dentin based on in vitro studies that compared the bond strength ( BS ) of GFPs cemented with resin cements .
Effect of selective enamel etching on clinical performance of CAD/CAM partial ceramic crowns luted with a self-adhesive resin cement
Objectives This study was conducted to evaluate a self-adhesive resin luting cement [ RelyX Unicem 3MESPE – RXU ] for  luting partial ceramic crowns ( PCCs )  with and without selective enamel etching in a prospect i ve , r and omized clinical trial . Material s and methods Thirty-four patients had received the intended treatment . Two PCCs ( Vita Mark II ; Cerec 3D ; Sirona ) had been placed in a split-mouth design : one with RXU without enamel etching ( RXU ) , the other with RXU with selective enamel etching ( RXU + E ) . Restorations were evaluated at baseline ( BL ) and after 12 , 24 , and 36 months ( USPHS criteria ) . For statistical analysis , the Chi-square test was applied ( α = 0.05 ) . Clinical survival of all restorations ( n = 68 ) after 3 years was determined using Kaplan – Meier analysis . Results Twenty three patients ( 12 male/11 female ) were available for clinical evaluation after 3 years . 19 RXU-PCCs were placed in molars , four in premolars , 18 RXU + E – PCCs in molars , five in premolars . Concerning clinical changes , no significant differences were found between luting strategies RXU/RXU + E at all recalls . Statistically significant changes over time were observed for marginal adaptation and marginal discoloration between BL and 36 m for RXU and RXU + E. For RXU + E , postoperative hypersensitivities decreased significantly from BL ( n = 6 ) to 36 m ( n = 0 ) . Of the 68 restorations originally included , eight RXU and four RXU + E restorations failed . At 3 years , Kaplan – Meier survival  of RXU was 72.9 % , that of RXU + E 87.6 % . Survival rates were not statistically significant different . Conclusions Although clinical survival of RXU + E is slightly better at 3 years , restorations of both groups perform similar with respect to clinical changes over time as evaluated by modified USPHS criteria . Clinical relevance The self-adhesive resin cement RXU can be used in conjunction with selective enamel etching , because survival rates of PCCs in the RXU + E group were not lower but , as a trend , even better than without enamel etching
Endodontic treatment , method of cement application , and post pretreatment are factors that might significantly affect the retention of glass-fiber posts  into root canals mainly when cemented with regular resin cement .
Self-adhesive resin cements were found to be less technique-sensitive to luting procedures as compared with regular resin cements
This study aim ed to identify factors that can affect the retention of glass fiber posts to intra-radicular dentin based on in vitro studies that compared the bond strength ( BS ) of GFPs cemented with resin cements .