الفهرس 
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Abstract
Several post surface treatments have been recommended to improve the bond strength of resin cements to glass fiber-reinforced composite resin posts in primary teeth root canals. Objective:To evaluate the influence of chemical post surface treatment methods on topography and retention of adhesively luted glass fiber-reinforced composite posts in primary teeth. Materials andMethods: Fifty endodontically treated primary anterior incisors prepared for glass fiber-reinforced composite posts. The posts were submitted to 5 different surface treatments (n = 10): no treatment , silanization , etching with 37% phosphoric , etching with 10% hydrogen peroxide and etching with21% sodium ethoxide. The posts’ surfaces were examined using an Environmental Scanning Electron Microscope (ESEM) then bonded with self-adhesive resin cement (Relay X) and stored in water at 37°C for 24 hours.Post retention was measured with push out test at a crosshead speed of 0.5 mm/min using a universal testing machine. Data were analyzed with 1-way ANOVA and the multiple comparisons using
Tukey post hoc test between the different groups. Results: Both H2O2 and sodium ethoxide treatmentscaused differential dissolution of the epoxy resin with increased exposed surface fiber glass and significantly improved the bond strength between fiber post and resin cement (p<0.05), there was no difference between the effect of silanization alone and phosphoric acid combined with silanizationon post surface topography or retention (p>0.05).Conclusion:Chemical surface treatments that selectively react with the epoxy-resin matrix improve the retention of the fiber reinforced composite posts in primary teeth.