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VOLUME 22 , ISSUE 3 ( March, 2021 ) > List of Articles


Effect of Different Resin Cements on the Bond Strength of Custom-made Reinforced Glass Fiber Posts—A Push-out Study

Patrícia MC Soares, Luis FSA Morgan, Stéphanie Q Tonelli, Francisco IR Limeira, Fábio FB Bruzinga, Paulo I Seraidarian, Rodrigo C Albuquerque, Frank F Silveira

Keywords : Bond strength, Endodontically treated teeth, Glass fiber post, Push-out, Resin cements

Citation Information : MC Soares P, Morgan LF, Tonelli SQ, Limeira FI, Bruzinga FF, Seraidarian PI, Albuquerque RC, Silveira FF. Effect of Different Resin Cements on the Bond Strength of Custom-made Reinforced Glass Fiber Posts—A Push-out Study. J Contemp Dent Pract 2021; 22 (3):219-223.

DOI: 10.5005/jp-journals-10024-3058

License: CC BY-NC 4.0

Published Online: 27-01-2021

Copyright Statement:  Copyright © 2021; Jaypee Brothers Medical Publishers (P) Ltd.


Aim and objective: This study aims to evaluate the effect of different resin cements on the bond strength (BS) of custom-made glass fiber posts (GFPs) using the push-out test. Materials and methods: Twenty-four uniradicular bovine teeth were selected. The crowns were sectioned at the cementoenamel junction, and the root canals were treated. The post spaces of the teeth were prepared to a length of 12 mm to receive a GFP. The specimens were randomly assigned to three experimental groups (n = 8), according to the resin cement used to fix the GFPs: RelyX U200 (U200), Allcem Core (ACC), and Allcem Dual (ACD). Each specimen was sectioned into six slices per root third (cervical, middle, and apical), which were subjected to the push-out test. BS values were calculated and compared using the Kruskal–Wallis and Friedman tests. Results: There were significant differences in the middle third, according to the resin cement type used (p < 0.05). ACD showed lower BS values (p < 0.05). Significant differences were observed for ACD among the thirds of the slices, with the lowest values also observed for the middle third (p < 0.05). Conclusion: The present study shows that ACC and U200 showed higher BS values compared with ACD, and were also less influenced by the depth of the root dentin. Clinical significance: The restoration of endodontically treated teeth is a challenge in dentistry, and, in most cases, will require installation of fiberglass pins. In this respect, several types of resin cements are indicated for cementation of these pins; for this reason, their adhesiveness must be adequately investigated. Conventional cements and self-adhesive cements have shown satisfactory performance in cementing the custom-made GFPs, thereby making these cements satisfactory clinical choices. The present study suggests that ACD had lower performance than the other two cements evaluated.

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