Evaluation of the push-out bond strength of an adjustable fiberglass post system to an endodontically treated oval root canal

Guilherme Nilson ALVES DOS SANTOS; Yara Teresinha Corrêa SILVA-SOUSA; Ana Laura Lima ALONSO; Aline Evangelista SOUZA-GABRIEL; Alice Corrêa SILVA-SOUSA; Fabiane Carneiro LOPES-OLHÊ; Renato ROPERTO; Jardel Francisco MAZZI-CHAVES; Manoel Damião SOUSA-NETO

doi:10.4012/dmj.2022-248

Original Paper

Evaluation of the push-out bond strength of an adjustable fiberglass post system to an endodontically treated oval root canal

Guilherme Nilson ALVES DOS SANTOS, Yara Teresinha Corrêa SILVA-SOUSA, Ana Laura Lima ALONSO, Aline Evangelista SOUZA-GABRIEL, Alice Corrêa SILVA-SOUSA, Fabiane Carneiro LOPES-OLHÊ, Renato ROPERTO, Jardel Francisco MAZZI-CHAVES, Manoel Damião SOUSA-NETO

Author information

Guilherme Nilson ALVES DOS SANTOS
Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo (USP)
Yara Teresinha Corrêa SILVA-SOUSA
Faculty of Dentistry, University of Ribeirão Preto (UNAERP)
Ana Laura Lima ALONSO
Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo (USP)
Aline Evangelista SOUZA-GABRIEL
Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo (USP)
Alice Corrêa SILVA-SOUSA
Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo (USP)
Fabiane Carneiro LOPES-OLHÊ
Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo (USP)
Renato ROPERTO
Adult Restorative Dentistry Department, College of Dentistry, University of Nebraska Medical Center (UNMC)
Jardel Francisco MAZZI-CHAVES
Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo (USP)
Manoel Damião SOUSA-NETO
Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo (USP)

Keywords: Root canal obturation, Endodontically, Fiberglass, Adaptation

JOURNAL FREE ACCESS

2023 Volume 42 Issue 4 Pages 532-541

DOI https://doi.org/10.4012/dmj.2022-248

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Abstract

To evaluate the push-out bond strength of the adjustable fiberglass post system to dentin. Twenty maxillary canine roots were endodontically treated and divided into two groups (n=10): conventional fiberglass posts (CFPs) and with single adjustable post (SAP) system. Two slices of each third were subjected to the push-out and failure pattern test and the most apical slice was subjected to analysis of the adhesive interface by scanning electron microscopy (SEM). Data were analyzed by the three-way analysis of variance, Tukey, and Friedman tests, and linear regression (α=0.05). The results showed higher push-out bond strength in the initial time interval for SAP (10.3±5.3, p<0.01). After 6 months, there was reduction in push-out bond strength for both (p<0.001). A higher percentage of adhesive and cohesive failures to dentin. After 6 months areas of maladaptation were noted (p=0.000). The SAP is completed to the promissory root canal in relation to alternative CFP.

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