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      Caracterización de la capa híbrida en dentina intraradicular pretratada con hipoclorito de sodio al 5,25% usando dos agentes cementantes con sistemas adhesivos de auto y grabado convencional Translated title: Characterization of hybrid layer intraradicular dentin pretreated with sodium hypochlorite 5.25% using two cementing agents with auto adhesives and conventional engraving

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          Abstract

          Resumen Introducción y objetivo: En la actualidad, la rehabilitación de dientes tratados endodónticamente representa una gran demanda para el ejercicio profesional del rehabilitador oral. Por esta razón, surge la necesidad de identificar y manejar los procesos básicos y los determinantes biológicos que influencian un buen proceso de adhesión dentinal. El objetivo de este estudio fue caracterizar la capa híbrida en dentina intraradicular pretratada con hipoclorito de sodio (NaClO) al 5,25% usando dos agentes cementantes con sistemas adhesivos de auto y grabado convencional. Materiales y métodos: Se seleccionaron 40 dientes premolares unirradiculares que fueron distribuidos aleatoriamente en 4 grupos. Grupo A (dentina pretratada con NaClO al 5,25% y cementado con cemento Relyx® Ultimate (3M), grupo B (control del grupo A, sin pretratamiento de dentina); grupo C (dentina pre-tratada con NaClO al 5,25% y cementado con cemento paraCore®) y grupo D: Control del grupo C, sin pretratamiento de dentina. Los dientes fueron seccionados transversalmente y se analizó la presencia de capa híbrida en los tercios cervical y medio radicular a través de microscopia electrónica de barrido. Resultados: Se encontraron diferencias estadísticamente significativas en el grosor de la capa híbrida de dientes pretratados con NaClO al 5,25% y cementados con paraCore® en comparación a los cementados con Relyx® ultimate valor p = 0,023 para la prueba de Anova.

          Translated abstract

          Abstract Introduction and objective: At present, the rehabilitation of endodontically treated teeth is a huge demand for professional in oral rehabilitation. For this reason, the need to identify and manage the core processes and biological determinants that influence a good process of dentinal adhesion. The aim of this study was to characterize the hybrid layer in dentin intraradicular pretreated with sodium hypochlorite (NaClO) 5.25 % using two cementing agents with self adhesive systems and conventional etching. Materials and Methods: 40 single-rooted premolar teeth which were randomized into 4 groups were selected. Group A: dentin pretreated with 5.25% NaClO 5.25% and RelyX® Ultimate cemented with cement (3M). Group B: (control group A, without pretreated dentin). Group C: dentin pretreated with NaClO 5.25% and cemented with cement ParaCore® and group D: Control group, not pretreated of dentin. The teeth were transected and the presence of hybrid layer was analyzed in cervical thirds and root medium by scanning electron microscopy. Results: Statistically significant differences in the thickness of the hybrid layer of teeth pretreated with NaClO 5.25% met and bonded with paraCore® compared to cementated with RelyX® Ultimate value p = 0.023 Anova test.

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          Dental adhesion review: aging and stability of the bonded interface

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            Hybrid layers of etch-and-rinse versus self-etching adhesive systems.

            To evaluate the effectiveness in the formation of resin tags, adhesive lateral branches and hybrid layers of five adhesive systems, when bonding to dentine.
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              Comparative evaluation of effects of different surface treatment methods on bond strength between fiber post and composite core

              PURPOSE Debonding of a composite resin core of the fiber post often occurs at the interface between these two materials. The aim of this study was to evaluate the effects of different surface treatment methods on bond strength between fiber posts and composite core. MATERIALS AND METHODS Sixty-four fiber posts were picked in two groups (Hetco and Exacto). Each group was further divided into four subgroups using different surface treatments: 1) silanization; 2) sandblasting; 3) Treatment with 24% H2O2, and 4) no treatment (control group). A cylindrical plexiglass matrix was placed around the post and filled with the core resin composite. Specimens were stored in 5000 thermal cycles between 5℃ and 55℃. Tensile bond strength (TBS) test and evaluation using stereomicroscope were performed on the specimen and the data were analyzed using two-way ANOVA, Post Hoc Scheffe tests and Fisher's Exact Test (α=.05). RESULTS There was a significant difference between the effect of different surface treatments on TBS (P<.001) but different brands of post (P=.743) and interaction between the brand of post and surface treatment (P=.922) had no significant effect on TBS. Both silanization and sandblasting improved the bonding strength of fiber posts to composite resin core, but there were not any significant differences between these groups and control group. CONCLUSION There was not any significant difference between two brands of fiber posts that had been used in this study. Although silanization and sandblasting can improve the TBS, there was not any significant differences between surface treatments used.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                ceso
                CES Odontología
                CES odontol.
                Universidad CES - Facultad de Odontología (Medellìn, Antioquia, Colombia )
                0120-971X
                June 2018
                : 31
                : 1
                : 11-21
                Affiliations
                [1] Barranquilla Mayagüez orgnameUniversidad Metropolitana Puerto Rico
                [3] Barranquilla orgnameUniversidad Metropolitana
                [2] Barranquilla Mayagüez orgnameUniversidad Metropolitana Puerto Rico
                [4] Puerto Colombia Bogotá orgnameUniversidad San Martín Colombia
                Article
                S0120-971X2018000100011
                10.21615/cesodon.31.1.2
                6668c18b-1f56-4611-a553-cd3a4ab1ccdd

                This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

                History
                : August 2015
                : February 2018
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 15, Pages: 11
                Product

                SciELO Colombia


                oral rehabilitation,hybridized dentin pretreated layer,agentes cementantes,rehabilitación oral,capa híbrida,dentina pretratada,cementing agents

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