Influence of Conditioning Time of Universal Adhesives on Adhesive Properties and Enamel-Etching Pattern

Cardenas, AM; Siqueira, Fabiana Suelen Figuerêdo de; Rocha, Juliana Schaia; Szesz, Anna Luiza; Anwar, Mohammed N; El-Askary, Farid Sabry; Reis, Alessandra; Loguércio, Alessandro Dourado

doi:10.2341/15-213-l

Cited by 47 publications

(57 citation statements)

References 34 publications

(59 reference statements)

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“…Recently, some studies evaluated the performance of these adhesives to dental enamel and most of them indicated that etch-and-rinse strategy provided higher bond strength to enamel. 11,12,13,14,15 More attention has been given to the dentin-pulp complex when referring to the selective removal of carious tissue, including the arrest of the caries process 3,16 and preservation of pulp vitality. 2,3,4 However, bonding to enamel should be a concern, since the stability of the resin-bonded dentin 17 and effectiveness of marginal sealing 18 depends on the bonding to surrounding enamel.…”

Section: Introductionmentioning

confidence: 99%

Bonding of universal adhesive system to enamel surrounding real-life carious cavities

et al. 2019

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This study aimed to evaluate the bond strength of a universal adhesive system to enamel surrounding real-life carious cavities. Twentyeight permanent molars (n = 7) with carious lesions in dentin were subjected to selective carious tissue removal to firm dentin and had their crowns sectioned longitudinally. A universal adhesive system (Single Bond Universal [SBU] used in either etch-and-rinse and self-etch strategies) was compared with an etch-and-rinse Adper Single Bond 2 (ASB) and a selfetch Clearfil SE Bond (CSE) adhesive systems (control systems). Adhesives were applied on the enamel, assumed demineralized, surrounding the cavity margins and on sound enamel (control substrate). Composite cylinders were built (0.72 mm 2) and microshear bond strength (µSBS) test was performed after 24 h of water storage. The µSBS values (MPa) were analyzed using two-way ANOVA and Tukey's post hoc tests (α = 0.05). Bond strength values obtained in demineralized enamel surrounding carious cavity margins were significantly lower than that obtained in sound enamel (distant from carious cavity margins) (p = 0.035). The bonding strategy of the SBU did not influenced the bond strength values, which were higher than that obtained with ASB. CSE showed similar µSBS values to ASB and SBU in the self-etch mode. In conclusion, the bond strength to enamel assumed demineralized is lower than to sound enamel. The enamel surrounding carious cavities jeopardize the bonding of universal adhesive system. The bond strength of universal adhesive is similar, regardless to bonding strategy.

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Section: Introductionmentioning

confidence: 99%

Bonding of universal adhesive system to enamel surrounding real-life carious cavities

et al. 2019

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“…25,155,156,157,159,160,161,162,163,164 Hence, increasing its surface area and creating deep etch-pits remains important for the achievement of an effective and durable bond to enamel. 4,165,166,167,168 According to the buffering capacity that such substrate offers to the action of self-etch systems in general, it can be expected that they do have a lower demineralizing effect on the hydroxyapatite-rich enamel, which ultimately compromise their bonding effectiveness. 169,170 Several in vitro studies proved that higher bond strength of self-etch systems to enamel is achieved with the selective phosphoric acid etching technique.…”

Section: Selective Enamel Acid-etchingmentioning

confidence: 99%

“…161,171,172,173,174 The same proved true, in recent times, for universal adhesives. 17,168,170,175,176 Performing selective enamel etching implies in less marginal discoloration and better marginal adaptation. 24,177,178,179,180,181 Likewise, an interesting meta-analysis communicated by Peumans et al 28 showed that selective etching reduces the clinical annual failure rates of mild self-etch systems, notwithstanding this was not true when clinical trials were evaluated separately.…”

Section: Selective Enamel Acid-etchingmentioning

confidence: 99%

Bonding efficiency and durability: current possibilities

et al. 2017

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Bonding plays a major role in dentistry nowadays. Dental adhesives are used in association with composites to solve many restorative issues. However, the wide variety of bonding agents currently available makes it difficult for clinicians to choose the best alternative in terms of material and technique, especially when different clinical situations are considered. Moreover, although bonding agents allow for a more conservative restorative approach, achieving a durable adhesive interface remains a matter of concern, and this mainly due to degradation of the bonding complex in the challenging oral environment. This review aims to present strategies that are being used or those still in development which may help to prevent degradation. It is fundamental that professionals are aware of these strategies to counteract degradation as much as possible. None of them are efficient to completely solve this problem, but they certainly represent reasonable alternatives to increase the lifetime of adhesive restorations.

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“…In fact, a larger quantity of solvents and hydrophilic monomers in those adhesive formulations leads to a greater number of residual solvents to be entrapped in the adhesive layer, which may reduce dentin bond strengths, and increase the permeability of the adhesive layer after polymerization, reducing stability over time [129,130]. Therefore, likewise one-step self-etch adhesives, several modified application techniques to overcome these problems are being evaluated, such as extending solvent evaporation time, applying adhesives actively with extended times on enamel, and placing an additional hydrophobic resin coating to optimize bonding [137,[139][140][141][142].…”

Section: Universal Adhesive Systemsmentioning

confidence: 99%

“…However, when the self-etch mode is performed a more superficial interaction might reduce the risk of post-operative sensitivity and delay the inevitable degradation phenomenon, as chemical interaction is likely to occur [4,129,135]. Concerning the enamel substrate, the literature suggests that selective etching prior to the application of a mild universal adhesive is an advisable strategy to optimize bonding [4,132,[135][136][137]. Nevertheless, the clinical use of phosphoric acid only on enamel margins without accidentally reaching dentin is challenging, especially if low-viscosity etchants are used.…”

Section: Universal Adhesive Systemsmentioning

confidence: 99%

Adhesion in Restorative Dentistry

Vinagre¹,

Ramos²

2016

Adhesives - Applications and Properties

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Bonding agents play a crucial role in the effective sealing and retention of resin-based composite restorations, which have been increasingly placed and replaced by dentists in many countries around the world. In fact, direct adhesive restoration with composite resins has become the procedure of choice for the treatment of anterior and posterior teeth. However, long-term durability of those restorations may be compromised due to progressive loss of the integrity of adhesive interfaces. This means that no adhesive strategy is free from technique sensitivity. The specificity and proportion of different constitutive molecules, the interaction between them and substrates can differ greatly from one class of adhesive system to another, which can affect bond quality. Protocol simplification has been an inevitable trend that has boosted the use of self-etching and universal systems in adhesive dentistry. However, there is a lack of randomized clinical trials to prove the effectiveness of these systems. This chapter gives an overview of the most important issues in dental adhesion and adhesive systems, as well, discussing their composition and clinical use.

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Influence of Conditioning Time of Universal Adhesives on Adhesive Properties and Enamel-Etching Pattern

Abstract: The active and prolonged application of universal adhesives in the SE mode may be a viable alternative to increase the degree of conversion, etching pattern, and resin-enamel bond strength.

Cited by 47 publications

References 34 publications

Bonding of universal adhesive system to enamel surrounding real-life carious cavities

Bonding of universal adhesive system to enamel surrounding real-life carious cavities

Bonding efficiency and durability: current possibilities

Adhesion in Restorative Dentistry

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