Natural Sciences, Stomotology, 2026
ISSN: 1829-006X
EVALUATION OF PUSH-OUT BOND STRENGTH OF GLASS FIBER POSTS USING DIFFERENT LUTING CEMENTS
This is an open access article distributed under the
Creative Commons Attribution License, which permits unrestricted use, distribution,
and reproduction in any medium, provided the original work is properly cited.
Submitted: 2026-04-08
© 2026 by author(s) and The Gufo Inc.
This work is licensed under Creative Commons Attribution–NonCommercial International License
(CC BY-NC 4.0).
Abstract
Objective:To evaluate the push-out bond strength of glass fiber posts (GFPs) luted with three different materials—bulkfill resin composite, resin-modified glass ionomer cement (RMGIC), and self-adhesive resin cement—across various root canal regions.
Materials and Methods:Thirty extracted human mandibular premolars were decoronated and endodontically treated.
Specimens were divided into three groups based on the luting agent (n = 10). After post cementation, the roots were
transversely sectioned into coronal, middle, and apical thirds. Tukey’s post hoc test (p < 0.05) and two-way ANOVA
were used to examine the results after push-out bond strength was determined using a universal testing machine.
Results:Bond strength was strongly impacted by the type of luting agent and the root canal area (p < 0.001). The highest mean bond strength was found in the apical third luted with bulk-fill resin (27.20 ± 1.20 N), while the middle third luted with self-adhesive resin exhibited the lowest (8.16 ± 1.20 N).
Conclusion:Bulk-fill resin composite demonstrated superior bonding performance across all root levels. The interaction between anatomical location and luting agent should be carefully considered in clinical post-endodontic restorations.