Evaluation of bond strength of self-adhesive resin composite repairs

João Victor Gonçalves Da Silva,Rodivan Braz,Jonathas José De Paulo,Márcia De Almeida Durão,Rodolfo Scavuzzi Carneiro Da Cunha

doi:10.1590/1981-863720210004220190180

João Victor Gonçalves Da Silva, Rodivan Braz + Show 3 more

Open Access

https://doi.org/10.1590/1981-863720210004220190180

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Abstract

ABSTRACT Objective: To evaluate the bond strength of repairs with the self-adhering flowable composite Vertise Flow (Kerr) and a conventional composite resin Filtek Z350 (3M ESPE) subjected to different surface treatments. Methods: Forty specimens were divided into four groups: ZV (Filtek Z350 + Vertise Flow, without prior treatment); ZAV (Z350 + Vertise Flow with prior treatment with Single Bond Universal Adhesive System (3M ESPE)); ZAZ (Filtek Z350 + Filtek Z350 with prior treatment with Single Bond Universal Adhesive System (3M ESPE)); VV (Vertise Flow + Vertise Flow, without prior treatment). After 15 days of storage, the specimens were subjected to microtensile tests (Kratos IKCL3-USB, SP, Brazil), with speed of 0.5 mm/min and 20kg load. For statistical analysis, ANOVA with Tukey tests were used (p < 5%). Results: The mean values of the bond strength were highest respectively in the groups: ZV (36.07 ± 37.63); ZAZ (24.04 ± 28.51); VV (19.39 ± 28.24) and ZAV (16.06 ± 15.66). The bond strength of the repairs between the groups presented satisfactory results. Conclusion: The self-adhesive composite resin Vertise Flow seems to be a viable and fast alternative for composite resins repairs.

Highlights

After the 60’s with Bowen advents [4], intense changes have occurred in the composition of the composite resins, initially in their inorganic fillers both in concentration, distribution, size and shape, culminating with the development of nanometric particles [5]
In order to simplify the technique and optimize the clinical time, self-adhesive composite resins of low viscosity were introduced to dental market
Mean and median values were higher in the ZV group and lower in the ZAV group; the mean values in the ZAZ and VV groups varied from (24.04 to 28.51 MPa) and the medians (19.39 to 28.24 MPa)

Summary

Introduction

The incorporation of new monomers to the organic matrix, besides Bis-GMA was done, which allowed greater incorporation of filler particles, handling, viscosity and degree of conversion, and in better mechanical properties of composite resins [6,7]. In order to simplify the technique and optimize the clinical time, self-adhesive composite resins of low viscosity were introduced to dental market. It is chemically bond to dental structures through functional phosphate monomer GPDM (glycerophosphate dimethacrylate) and calcium ions of enamel and dentin. This reduces postoperative sensitivity and clinical time [8] The Self-Adhering Flowable Composite Vertise Flow has multiple indications such as small class I restorations, base/liner for class I and II restorations, sealant and repair of composite and ceramic restorations [9]

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