ArticleActa odontologica latinoamericana : AOL2025
Influence of Bio-C and AH Plus sealers on bond strength determined by push-out of a fiberglass post installed with self-adhesive sealer.
Article in Acta odontologica latinoamericana : AOL, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Given the limitations of the intrarradicular adhesion procedure and the significant challenge of achieving effective bonding, it is essential to assess the potential impact of various endodontic sealers on the bond strength between fiberglass posts and root dentin.
aimThe aim of this study was to evaluate the bond strength of fiberglass posts to the root dentin of teeth filled with different endodontic sealers. MATERIAL AND
methodsForty-five single-rooted teeth were instrumented, filled using the single-cone technique, and divided into three groups according to the selected sealer (n=15): Bio-C sealer (GBC), AH Plus (GAH), and control group without sealer (GC). The post was installed using RelyX U200 self-adhesive resin sealer. Specimens were cut into a cervical, middle and apical thirds, to analyze one slice per third. Bond strength was evaluated using a push-out extrusion test. The failure modes in each third were observed under the microscope, and classified as adhesive, cohesive or mixed.
resultsIt was found a difference between groups in the cervical and apical thirds, with GAH having stronger adhesion in the cervical third than GBC (p=0.0015), although there was no difference with GC. In the apical third, GAH had higher adhesion values than GBC (p=0.0014) and GC (p=0.0005). In the middle third, there was no difference between groups (p=0.1386). The same sealer in the different thirds only differed significantly in the GBC group, where bond strength was higher in the middle and apical thirds, with a significant difference from the cervical third (p<0.05). There was no difference between failure types in any of the groups (p>0.05).
conclusionThe predominant failure between dentin and sealer was adhesive. It was concluded that the use of AH Plus endodontic sealer resulted in less impairment of the bond strength of resin cemented fiberglass posts compared to bioceramic sealer.
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