In vitro evaluation of dentine adhesive resistance after applying two irrigation sequences

• Marchant, Carlos ^[1] ; Brito, Daniela ^[2] ; Durán, Bruno ^[2] ; Vidal, Juan Carlos ^[3] ; Navarrete, Ángel ^[1]
  1. [1] Universidad de Valparaíso

     Universidad de Valparaíso

     Valparaíso, Chile

     
  2. [2] DDS Private Practice, Olmué
  3. [3] DDS - CMD Carabineros de Chile

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• Localización: Applied Sciences in Dentistry, ISSN-e 0719-5761, Vol. 1, Nº. 2, 2020
• Idioma: inglés
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  • Objective: To evaluate the bond-strength (MPa) of an adhesive system to intracameral dentin after 2 different endodontic irrigation sequences.  Material and Methods: An in vitro double-blinded experimental cross-over study was conducted. 23 teeth were extracted, and sectioned, exposing the pulp chamber. Samples were separated into three groups: the first group (control) used a 0.9% saline solution; in the second group, the conventional sequence of irrigation of the University of Valparaíso was employed (5% NaOCl -18% EDTA-0.9% saline solution); and finally the third group, the experimental sequence was employed (5% NaOCl, 18% EDTA and 15% saline solution). The sealing technique was then conducted using universal 3M ESPE Single Bond adhesive and Filtek Z350 resin. Subsequently, the bond-strength test was performed in a microtensile, until fracture. Results: The control group had the highest values of frequency of adhesive and cohesive failure compared to the conventional and experimental group but presented a statistically non-significant association. As for the irrigation protocols, they did not show a major difference in their adhesive bond-strength when compared. Conclusion: The results of this study conclude that the adhesive resistance is not significantly modified by different irrigation protocols.