Universal Adhesive Systems in Class II Amalgam Restorations

Armiliana Soares Nascimento,Eliana Alves De Lima,Yasmine De Carvalho Souza,Marcia De Almeida Durão,Joseane Delfino Canto,Rodivan Braz

doi:10.15448/1980-6523.2016.3.21397

Armiliana Soares Nascimento, Eliana Alves De Lima + Show 4 more

Open Access

https://doi.org/10.15448/1980-6523.2016.3.21397

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Abstract

Objective: to assess the effectiveness of adhesive system in reducing microleakage in Class II amalgam restorations.Methods: The teeth were divided randomly into 3 equal groups: Group I was the control experiment (Copal Vanish); Group II: single Bond Universal 3M-ESPE (with and without acid – 37%); and Group III: All Bond Universal – BISCO (with and without acid – 37%), after the amalgam was condensed. The root apices were then sealed with acrylic resin and stored for 24 hours in 100% humidity. After storage, the specimens were subjected to 500 cycles of thermocycling (5°C and 55°C). The teeth were isolated with cosmetic nail polish and were immersed in 0.5 basic fuchsin dye for 24 hours. The teeth then were sectioned with a diamond disc and observed under a stereomicroscope. Microleakage was assessed using a 0-3 scale of dye penetration. The data was analyzed using the Kruskal-Wallis test (p<0.05).Results: The microleakage scores revealed less leakage in the experimental groups than in the control group. The microleakage for the adhesives without acid conditioning was reduced, although no statistical significance was recorded (p<0.05).Conclusion: The immediate adhesive material acted effectively as a barrier for microleakage when it was applied without acid.

Highlights

The penetration of fluids and bacteria in the restorative interface remains one of the principal problems of odontology and is directly associated with the longevity of restorations
Objetivo: Avaliar a eficácia do sistema adesivo na redução da microinfiltração em restaurações de amálgama classe II
Several approaches have been proposed for the use of amalgam restorations in an attempt to reduce marginal infiltration

Summary

Introduction

The penetration of fluids and bacteria in the restorative interface remains one of the principal problems of odontology and is directly associated with the longevity of restorations. Marginal micro-infiltration leads to problems such as the early loss of the restoration due to recurring caries, postoperative sensitivity or pulpal damage [1,2,3]. Several approaches have been proposed for the use of amalgam restorations in an attempt to reduce marginal infiltration. The use of adhesive systems is supported by the results of in vivo [6,7] and in vitro studies [4,5,6,7,8], which reported significantly greater reductions in micro-infiltration with adhesive systems than with varnish [9,10,11]. Adhesives form a bond and/or molecular interaction between the amalgam and the dental structure, unlike varnish which only establishes a mechanical connection [12]

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Discussion

Conclusion