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The Use of Bulk-Fill Flow in the Customization of Glass Fiber Post.

Authors :
Silva CF
Martins VM
Melo AP
Martins LC
Santos-Filho PCF
Source :
European journal of dentistry [Eur J Dent] 2021 Feb; Vol. 15 (1), pp. 139-144. Date of Electronic Publication: 2020 Sep 15.
Publication Year :
2021

Abstract

Objectives:  The aim of this study is to evaluate the influence of different composite resin in the customization of glass fiber posts (GFPs) on bond strength and failure mode.<br />Materials and Methods:  Thirty bovine roots were selected. The wall roots were reduced so that each wall had a minimum dentin thickness of 1 mm. Thirty GFPs were divided into three groups ( n = 10), which received different types of customization. The first had the GFP relined by bulk-fill flowable composite resin (BF), the second group had the GFP customized by conventional regular composite resin (CR), and the third group was cemented with dual resin cements (DRC), without relining. The root were sectioned, resulting in two 1.0-mm thick slices from cervical root regions only and push-out bond strength test was performed (EMIC, Universal testing machine). To determine failure mode, a stereomicroscope was used at ×40 magnification, with a 2.5D analysis.<br />Statistical Analysis:  Data were analyzed using two-way ANOVA ( α = 0.05) and Tukey's test.<br />Results:  BF (9.08 ± 1.9) and CR (9.17 ± 3.00) did not show a statistically significant difference ( p = 0.961), regarding the bond strength test values. However, there was a statistically significant difference between DRC (5.44 ± 1.89) and the others ( p < 0.05). BF (66.66%) and the CR group (47.61%) presented a predominantly failure mode type 6: mixed between resin cement and composite. While the highest failure index of the DRC group was type 2: adhesive between resin cement and dentin (47.61%).<br />Conclusion:  BF can be an alternative for the customization of fiber posts, since it presented a similar behavior to the established technique with conventional composites.<br />Competing Interests: None declared.<br /> (European Journal of Dentistry. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/).)

Details

Language :
English
ISSN :
1305-7456
Volume :
15
Issue :
1
Database :
MEDLINE
Journal :
European journal of dentistry
Publication Type :
Academic Journal
Accession number :
32932532
Full Text :
https://doi.org/10.1055/s-0040-1716599