Effect of Intracanal Medicaments on Pull-Out Bond Strength of Fiber Post Cemented with a Self-Adhesive System

Abstract

Objectives This study aimed to assess the effect of four intracanal medicaments on pull-out bond strength of fiber posts. Materials and Methods A total of 65 single-rooted, single-canal teeth were selected and decoronated. Root canals were prepared and after rinsing were randomly divided into five groups ( n = 13). G 1 : calcium hydroxide (CH), G 2: CH plus chlorhexidine (CH+CHX), G 3 : triple antibiotic paste (TAP), G 4 : double antibiotic paste (DAP) were applied in the canals in the four groups. The control group (G 5 ) received no medicament. After 4 weeks, the medicaments were rinsed off and the canals were filled with gutta-percha. Post space was then prepared in root canals for the placement of glass fiber posts and self-adhesive cement (Panavia F2). After cementation, they were subjected to pull-out bond strength test. Statistical Analysis Data were statistically analyzed using one-way analysis of variance and Tukey test.Results The pull-out bond strength values were significantly different in the groups ( p < 0.001). The highest values of bond strength were seen in G 2 , G 1 , and G 3 (359.97 ± 81.26, 333.79 ± 98.96, 309.27 ± 78.07), respectively. There was no significant difference between G 4 and G 5 ( p = 0.75). Conclusion The results showed that CH, CH+CHX, and TAP enhanced the pull-out bond strength of fiber post to root canal wall as compared to the control group.

Evaluation of medicaments and final irrigating strategies on resin cement penetration and the bond strength of prefabricated fiber posts in oval-shaped root canals

“…However, this study revealed that the use of root canal medicaments can have a negative impact on the bonding between the resin cement and dentin wall, which is consistent with previous ndings that such medicaments can reduce the bond strength between the root canal and resin cement [3,4]. On the contrary, certain studies have shown that the use of CH or antibiotic paste can enhance the push-out bond strength of ber post [21,22].…”

Effects of calcium hydroxide intracanal medicament on push‐out bond strength of endodontic sealers: A systematic review and meta‐analysis

“…This finding further supports the use of CH use as an intracanal medicament and refutes the concerns over its negative effect on the sealers bond. Factors that may contribute to the insignificant effect of intracanal medicaments on the push‐out bond strength is the possibility of the removal technique of the calcium hydroxide residual from the root canal 1,36 . An effective removal of calcium hydroxide may not interfere with the adhesion between endodontic sealer with root canal dentin.…”

“…47 The pooled data in the present study revealed no significant from the root canal. 1,36 An effective removal of calcium hydroxide may not interfere with the adhesion between endodontic sealer with root canal dentin. Thus, endodontic sealers could directly bond to the root canal dentin.…”

“…The success of root canal treatment is based on three main principles; instrumentation, disinfection, and three‐dimensional obturation of the canal 1 . The latter is essential for a tight seal throughout the root canal against microleakage and avoiding re‐infection of the canal 2,3 .…”

“…11 Despite the improvement of obturation materials and instrumentation techniques used for endodontic therapy, intracanal medications are still recommended to enhance the disinfection of the root canal and to prevent coronal leakage. 1 The intracanal medicament is defined as the temporary placement of materials that have good biocompatibility with the root canal in order to inhibit the coronal invasion of bacteria. 14 It can be used successfully to restrain bacterial regrowth and possibly improve bacterial suppression inside the root canal.…”