Iranian Dental Association Journal of Iranian Dental Association 3060-8201 23 1 2011 06 01 Effects of different surface treatments on bond strengths of a non-metallic post in root’s canal 38 48 EN Mansoreh Mirzaei Ayub Pahlevan Masoumeh Hasani-Tabatabaei Mahdi Abbasi Journal Article 2011 05 30 2013 02 23  Effects of different surface treatments on bond strengths of a non-metallic post in root’s canal  Dr. Mirzaei M .,1 <u>Dr. </u><u>Pahlevan </u><u>A </u><u>.,2 </u>Dr. Hasani-Tabatabaei M .2 Dr. Abbasi M. 1  1 Assistant Professor, Department of Operative Dentistry , School of Dentistry, Tehran University of Medical Sciences. Tehran , Iran. 2 Associate Professor, Department of Operative Dentistry , School of Dentistry, Tehran University of Medical Sciences. Tehran , Iran.   <i> (Received 24 May, 2010 Accepted 12 Jan, 2011) </i>   <i> Abstract </i> <i> </i> <i> Background and Aim </i>: The establishment of reliable bonds at root-post-core interfaces is critical for the clinical success of post retained restorations. Severe stress concentration at post-cement interface increases the probability of post debonding from the root. The aim of this study was to investigate the effects of different surface treatments on bond strengths of a non-metallic post in the root.  <i> Materials </i><i>and </i><i>Methods </i>: Fifty extracted human canines or premolars that had just one root canal were endodontically treated. D.T Light Posts (RTD/France) recieved surface treatments in five categories:  1) Application of silane  2) Sandblast with Alumina particles  3) Sandblast with Alumina particles + application of silane  4) Etching with hydrofluoric acid + application of silane  The posts were cemented in roots using panavia F 2.0 resin cement. A push-out test was performed on three different sections of each root to measure bond strengths.  Data were analyzed with ANOVA and Post hoc tests at P<0.05.  Failure modes were observed under a stereomicroscope (10 ×).  <i> Results </i>: Surface treatments used in this study (silane application, sandblast, sandblast + silane, HF etching + silane) did not increase the push-out bond strengths of fiber post used in this study. (P>0.05)  The most failures in different groups of surface treatments occurred at the cement material-post interface.  <i> Conclusion </i>: <i />The use of silane, sandblast method and etching with HF did not increase the push-out bond strength of fiber post used in this study .<i />  <i> </i> <i> Key words </i>: Fiber – Post - Quartz-fiber post - Bond strength - Surface treatment   <i> Corresponding Author </i><i>: </i><i /><i>Dr. </i><i>Pahlevan </i><i>A </i><i>., </i><i /><i>Associate </i><i>Professor, Department of </i><i>Operative Dentistry </i><i>, School of Dentistry, </i><i>Tehran </i><i>University of </i><i>Medical Sciences. </i><i /><i>Tehran </i><i>, Iran. </i><i /> <i> e.mail: </i><i /><i>ayoubpahlevan@yahoo.com </i>Â