Influência do protocolo de remoção de resíduos de cimentos à base de resina epóxi sobre a interface de adesão com o adesivo universal, utilizado na estratégia condiciona-e-lava

• Paulo Firmino da Costa Neto ^[1] ; Mariana Bena Gelio ^[1] ; Elisângela Maria Pereira de Souza ^[1] ; Jardel Camilo do Carmo Monteiro ^[1] ; Adirson Jorge Júnior ^[1] ; Thais Piragine Leandrin ^[1] ; José Roberto Cury Saad ^[1] ; Milton Carlos Kuga ^[1]
  1. [1] Universidade Estadual Paulista

     Universidade Estadual Paulista

     Brasil

     
• Localización: Cuadernos de Educación y Desarrollo, ISSN-e 1989-4155, Vol. 15, Nº. 5, 2023, págs. 4802-4816
• Idioma: portugués
• DOI: 10.55905/cuadv15n5-048
• Enlaces
  • Texto completo
• Resumen
  • English

    Objective: To evaluate the influence of the removal of residues of two epoxy resin-based cements (SPL, Sealer Plus or S26, Sealer 26), with 95% ethanol (ETA) or xylene (XIL), on the adhesion interface between the universal adhesive system (SBU, Scotchbond Universal), used in the condition-and-wash strategy, and the dentin substrate of the dental crown, by evaluating the bond strength (BR), assessed by the microshear test, and analyzing the pattern of adhesive failure. Materials and methods: The buccal surface of forty ex vivo bovine crowns were prepared and divided into four groups (n=10) according to the chemical composition of the endodontic cement (SPL or S26) and the residue removal protocol (ETA or XIL): SPL+ETA, SPL+XIL, S26+ETA and S26+XIL. Immediately after dentin impregnation and cement residue removal, according to the selected protocols, the dentin surface was conditioned with 27% phosphoric acid and universal adhesive (SBU) was applied. Then, 4 composite resin specimens were fixed in place and 24hlater subjected to micro shear test and fracture pattern analysis. The bond strength data were analyzed by the 2-criteria ANOVA test. Results: S26+ETA and S26+XIL showed lower RU values compared to SPL+XIL and S26+XIL (P < 0.05). There was no difference between SPL+ETA and S26+S26 or SPL+XIL and S26+S26 (P > 0.05). Conclusion: Xylol is the most favorable protocol for the removal of epoxy-based cement residues, regardless of the chemical composition of the material, on the bond interface with the universal adhesive (SBU), used in the condition-and-wash strategy.

  • português

    Objetivo: Avaliar o a influência da remoção de resíduos de dois cimentos à base de resina epóxi (SPL, Sealer Plus ou S26, Sealer 26), com etanol a 95% (ETA) ou xilol (XIL), na interface de adesão entre o sistema adesivo universal (SBU, Scotchbond Universal), utilizado na estratégia condiciona-e-lava, e o substrato dentinário da coroa dental, por meio da avaliação da resistência de união (RU), avaliada pelo teste de microcisalhamento, e análise do padrão de falha adesiva. Materiais e métodos: A face vestibular de quarenta coroas de dentes bovinos ex vivo foram preparadas e dividas e quatro grupos (n=10), de acordo com a composição química do cimento endodôntico (SPL ou S26) e protocolo de remoção dos resíduos (ETA ou XIL): SPL+ETA, SPL+XIL, S26+ETA e S26+XIL. Imediatamente após a impregnação da dentina e remoção dos resíduos do cimento, de acordo com o protocolos selecionado, a superfície dentinária foi condicionada com ácido fosfórico a 27% e aplicado o adesivo universal (SBU). Em seguida, 4 corpos de prova de resina composta foram fixados no local e, 24h após, submetidos ao teste de microcisalhamento e análise do padrão de fratura. Os dados de resistência de união foram analisados pelo teste de ANOVA a 2 critérios. Resultados: S26+ETA e S26+XIL demonstraram menores valores de RU em relação a SPL+XIL e S26+XIL (P < 0,05). Não houve diferença entre SPL+ETA e S26+S26 ou SPL+XIL e S26+S26 (P > 0,05). Conclusão: O xilol é o protocolo mais favorável para a remoção de resíduos do cimento à base de resina epóxi, independentemente da composição química do material, sobre a interface de adesão com o adesivo universal (SBU), utilizado na estratégia condiciona-e-lava.

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