An In-Vitro Study Comparing The Push Out Bond Strength Of A Fiber Post System Employing Four Different Resin Cements.

Abstract

Background: Debonding is one of the common reasons for failure in fiber-reinforced composite posts, and it tends to occur at the post
space-dentin adhesive contact. The goal of this investigation was to evaluate the push-out bond strength of a fiber-reinforced post system
by using four distinct types of resin cement.
Materials and Methods: This in-vitro research used a decoronation technique on forty mandibular premolars, and endodontic treatment
was performed on the roots. After the post space preparation was complete, the root specimens were divided up into four groups of ten
each and categorized accordingly. The following are the names of the four resin cement systems that were used to cement fiber-reinforced
composite posts: (a) Multilink Speed, (b) Rely X Unicem, (c) Calibra, and (d) Permaflo DC. Three portions of each root were cut to a
thickness of three millimeters, and these parts were prepared. The bond strength values were determined by performing a push-out test
using a universal testing machine at a crosshead speed of one millimeter per minute (mm/min). After compiling the results, a post-hoc
Scheffe test and multivariate analysis of variance (MANOVA) were carried out on the data.
Result: The product with the greatest mean push-out bond strength was Rely X Unicem, followed by Multilink Speed and then Permaflo
DC. Calibra was found to have the mean push-out bond strength that was the lowest. Using the MANOVA and post-hoc Scheffe tests, we
discovered that the push-out bond strength of resin cement varied significantly across the various root canal areas. These variations were
statistically significant.
Conclusion: The mean push-out bond strength of Rely X Unicem was the greatest, followed by Multilink Speed and Permaflo DC in that
order. When compared to Calibra, the mean push-out bond strength was found to be the weakest.