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Effect of time interval between core preparation and post cementation on pushout bond strength of glass fiber-reinforced posts

INTRODUCTION: The aim of this study was to investigate the effect of timing of coronal preparation on the pushout bond strength of fiber postluted with resin cement in the root canal. MATERIALS AND METHODS: In this experimental study, 48 mandibular human premolars were selected in a 3-week range. Af...

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Autores principales: Niakan, Mahsa, Mosharraf, Ramin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Medknow Publications & Media Pvt Ltd 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5730923/
https://www.ncbi.nlm.nih.gov/pubmed/29249882
http://dx.doi.org/10.4103/jips.jips_36_17
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author Niakan, Mahsa
Mosharraf, Ramin
author_facet Niakan, Mahsa
Mosharraf, Ramin
author_sort Niakan, Mahsa
collection PubMed
description INTRODUCTION: The aim of this study was to investigate the effect of timing of coronal preparation on the pushout bond strength of fiber postluted with resin cement in the root canal. MATERIALS AND METHODS: In this experimental study, 48 mandibular human premolars were selected in a 3-week range. After root canal treatment and postspace preparation, a post #2(Angelus, Brazil) was cemented into the canal by a resin-based cement (Bifix SE, VOCO, Germany). Cylindrical resin composite cores were built on the posts. Then, the specimens were divided into 4 groups of 12 specimens each: one control group without core preparation and 3 experimental groups with core preparation that was done 15 min, 1 h, and 24 h after postcementation. One day after postcementation, each root was sectioned into 3 segments. Each slice was connected to universal testing machine. The load was applied at the speed of 0.5 mm/min till failure happened. The collected data were analyzed (SPSS/PC 20.0; SPSS Inc., Chicago, IL, USA) using two-way ANOVA and post hoc Tukey test at P < 0.05 level of significance. RESULTS: Mean shear bond strength differences among interventional groups were not statistically significant (P > 0.05). Nevertheless, there were significant differences among root regions (P < 0.001). CONCLUSION: It was concluded that core preparation and its timing does not affect adversely retention of fiber post and bond strength is higher in the cervical segment.
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spelling pubmed-57309232018-10-01 Effect of time interval between core preparation and post cementation on pushout bond strength of glass fiber-reinforced posts Niakan, Mahsa Mosharraf, Ramin J Indian Prosthodont Soc Original Article INTRODUCTION: The aim of this study was to investigate the effect of timing of coronal preparation on the pushout bond strength of fiber postluted with resin cement in the root canal. MATERIALS AND METHODS: In this experimental study, 48 mandibular human premolars were selected in a 3-week range. After root canal treatment and postspace preparation, a post #2(Angelus, Brazil) was cemented into the canal by a resin-based cement (Bifix SE, VOCO, Germany). Cylindrical resin composite cores were built on the posts. Then, the specimens were divided into 4 groups of 12 specimens each: one control group without core preparation and 3 experimental groups with core preparation that was done 15 min, 1 h, and 24 h after postcementation. One day after postcementation, each root was sectioned into 3 segments. Each slice was connected to universal testing machine. The load was applied at the speed of 0.5 mm/min till failure happened. The collected data were analyzed (SPSS/PC 20.0; SPSS Inc., Chicago, IL, USA) using two-way ANOVA and post hoc Tukey test at P < 0.05 level of significance. RESULTS: Mean shear bond strength differences among interventional groups were not statistically significant (P > 0.05). Nevertheless, there were significant differences among root regions (P < 0.001). CONCLUSION: It was concluded that core preparation and its timing does not affect adversely retention of fiber post and bond strength is higher in the cervical segment. Medknow Publications & Media Pvt Ltd 2017 /pmc/articles/PMC5730923/ /pubmed/29249882 http://dx.doi.org/10.4103/jips.jips_36_17 Text en Copyright: © 2017 The Journal of Indian Prosthodontic Society http://creativecommons.org/licenses/by-nc-sa/3.0 This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as the author is credited and the new creations are licensed under the identical terms.
spellingShingle Original Article
Niakan, Mahsa
Mosharraf, Ramin
Effect of time interval between core preparation and post cementation on pushout bond strength of glass fiber-reinforced posts
title Effect of time interval between core preparation and post cementation on pushout bond strength of glass fiber-reinforced posts
title_full Effect of time interval between core preparation and post cementation on pushout bond strength of glass fiber-reinforced posts
title_fullStr Effect of time interval between core preparation and post cementation on pushout bond strength of glass fiber-reinforced posts
title_full_unstemmed Effect of time interval between core preparation and post cementation on pushout bond strength of glass fiber-reinforced posts
title_short Effect of time interval between core preparation and post cementation on pushout bond strength of glass fiber-reinforced posts
title_sort effect of time interval between core preparation and post cementation on pushout bond strength of glass fiber-reinforced posts
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5730923/
https://www.ncbi.nlm.nih.gov/pubmed/29249882
http://dx.doi.org/10.4103/jips.jips_36_17
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