Effect of Surface Treating Fibre Posts on Shear Bond Strength of Composite Resin-An In vitro Study

• Main Authors: Bethu Mohana Bindu, Basapogu Sreeramulu, Talari Ramesh, Karnati Rajeev Kumar Reddy, Thommandru Mani Victor, Ganta Rajendra Naidu
• Format: Article
• Language: English
• Published: JCDR Research and Publications Private Limited 2018-03-01
• Series: Journal of Clinical and Diagnostic Research
• Subjects: dual cure adhesive resin cement; silanization; universal testing machine
• Online Access: https://jcdr.net/articles/PDF/11308/31787_270218_31787_CE[Ra1]_F(SL)_PF1(EK_SL)_PFA(EK_SL)_PB(EK_SL)_PN(AnG).pdf

Introduction: Fibre-reinforced post is a common choice for restoring endodontically treated teeth which are badly broken. To improve the retention of post, surface treatments are performed to modify the surface structure and to enhance the adhesion of fibre post and resin cement. Aim: To evaluate and compare the effect of three different surface treatment protocols on Fibre-Reinforced Composite (FRC) post to increase the bond strength between FRC post and dual cure adhesive resin luting agent using Universal Testing Machine (UTM). Materials and Methods: Sixty four radiopaque fibrereinforced posts were selected. The samples were divided into two groups of glass fiber (Group A) and carbon fiber (Group B) each (n=32) embedded into acrylic resin which were subdivided into four groups each [I-no surface treatment, II-ethyl alcohol and silanization, III-hydrogen peroxide and silanization, IV-sand blasting and silanization (n=8)]. A customised metal ring was placed around the exposed fibre post surfaces after surface treatment. The dual cure adhesive resin cement was loaded in the ring and polymerised with halogen polymerising light. Observations were then statistically analysed using (One-way ANOVA) to evaluate the mean difference among four groups and Tukey’s Post-Hoc test to determine inter group comparisons. Results: Statistically significant difference was found among all groups with sub-group IV of A and B i.e., both carbon and glass fibre posts treated with sand blasting and silanization showing significantly higher value (p<0.05) compared to all other groups and glass fibre posts showed significantly higher value than carbon fibre posts. Conclusion: Sand blasting followed by silanization is the most effective surface treatment than other treatments done for improving the bond strength of resin cement to the fibre post surface.