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The effectiveness of EDTA 17% as a cleaning solution for the fiber post space after filling with cements
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Keywords

Tooth, nonvital
Endodontics
Zinc oxide-eugenol cement
Edetic acid

How to Cite

1.
Paula LAM de, Reis LC de A, Miranda JS, Verner FS, Junqueira RB, Carvalho RF de. The effectiveness of EDTA 17% as a cleaning solution for the fiber post space after filling with cements. Braz. J. Oral Sci. [Internet]. 2022 Nov. 1 [cited 2024 Jul. 14];22(00):e236508. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8666508

Abstract

Aim: To evaluate the resistance of the union between a glass fiber post and radicular dentine after cleaning the root with 17% EDTA and filling with different endodontic cements. Methods: Forty uniradicular bovine incisors were removed to obtain root lengths of 18 mm. Endodontic treatment was performed on all roots using different filling cements (zinc oxide and eugenol-based, OZE; cement based on epoxy resin, AH) and cleaning solutions (saline, SA or EDTA), which made it possible to obtain four groups: OZESA, OZEEDTA, AHSA and AHEDTA. Subsequently, 12 mm of filling material was removed from the roots, and they were prepared to receive fiber posts luted with resin cement. To execute the mechanical cycles (2x106 cycles, 90 N, 4 Hz), coronal reconstruction was performed with a silicon matrix. The roots were then sliced (2-mm thick) to perform the push-out test. The results were analyzed using analysis of variance (one factor and two factors) and Tukey’s test (α=0,05). Results: Bond strength (Mpa) was significantly higher for OZEEDTA (9,18) and AHEDTA (8,70) than for OZESA (6,06) AHSA (8,7). OZEEDTA also presented the highest values in the cervical region (15,18) but was significantly lower in the apical region (2,99). However, AHEDTA had a homogeneous bond strength in all thirds. Conclusion: Regardless of the endodontic cement used, EDTA was used as an irrigating solution, culminating in a higher bond strength between the glass fiber post and dentin.

https://doi.org/10.20396/bjos.v22i00.8666508
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Copyright (c) 2022 Luciana Arruda Mendes de Paula, Lohara Campos de Abreu Reis, Jean Soares Miranda, Francielle Silvestre Verner, Rafael Binato Junqueira, Rodrigo Furtado de Carvalho

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