State of the art of self-etch adhesives
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252 citations
Cites background from "State of the art of self-etch adhes..."
...Although the deposition of water-insoluble 10-MDP-calcium salts has minimal effect on the immediate bond strength of self-etched dentin, proponents of the A-D concept claim that these salts contribute to bond durability by protecting the hybrid layer from hydrolytic degradation.(10) Nevertheless, the validity of this claim requires substantiation....
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...Although self-etch adhesives do not require bonding to moist dentin and are less technique sensitive, they invariably contain water for ionization of the acidic resin monomers.(10) Whereas water incorporated in self-etch adhesives may be removed by evaporation prior to polymerization of the adhesive monomers, the high concentration of ionic resin monomers in these adhesives...
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...5-1 m interaction depth), intermediate (pH, 1–2; 1–2 m interaction depth), and strong (pH ≤ 1, ≥ 5 m interaction depth, similar to etching with phosphoric acid).(10) The more aggressive self-etch adhesives that contain substantial amounts of highly acidic resin monomers can induce continued etching along the base of hybrid layers after polymerization of those adhesives....
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251 citations
Cites background from "State of the art of self-etch adhes..."
..., sound, carious, sclerotic dentin, as well as enamel) (78)....
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244 citations
Cites background from "State of the art of self-etch adhes..."
...One of the keys of success with self-etching adhesives is he chemical bonding capability of their functional monomers o hydroxyapatite (HAp),1 as described by the ‘‘adhesion/ ecalcification concept’’.9,10 Among the currently used funcional monomers, 10-methacryloyloxydecyl dihydrogenphophate (MDP) has demonstrated a very effective and durable ond to dentine,11,12 due to the low solubility of the calcium alt that forms on the hydroxyapatite surface.12 On the other and, micromechanical interlocking by means of good entine hybridization (i.e. resin tags and hybrid layer), has een proposed to improve the bond strength of SEAs.13 hosphoric acid etching of dentine prior to application of EAs significantly improves the interface infiltration morpholgy, by generating thicker hybrid layers14,15 and longer resin ags.16 Removal of the smear layer and smear plugs by this prereatment17 facilitates the adhesive penetration, especially in ild SEAs....
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...his ‘‘etching aggressiveness’’ is strongly related with their nteraction depth in dentine,(19) which varies from few anometers in ultra-mild SEAs(20) to several micrometres, in he strong SEAs.(1) Thus, hybrid layers of mild SEAs are much hinner than those generated by stronger SEAs or etch-andinse adhesives, although hybrid layer thickness may not be of ajor importance to bonding efficacy....
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...5).(1) his ‘‘etching aggressiveness’’ is strongly related with their nteraction depth in dentine,(19) which varies from few anometers in ultra-mild SEAs(20) to several micrometres, in he strong SEAs....
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...Although there as a better interface morphology after acid etching, its orrelation to better mTBS values in self-etch adhesives has een brought into question.18 In one study, the use of hosphoric acid prior to self-etch application in dentine reated well impregnated hybrid layers, which were associatd to significantly improved mTBS values when compared to onventional application of the same 1-SEAs.13 On the other and, despite the fact that the application of the etching step rior to self-etch adhesives has shown to improve the hybrid ayer thickness and resin tag formation, these interfaces Please cite this article in press as: Wagner A, et al. Bonding performance (2014), http://dx.doi.org/10.1016/j.jdent.2014.04.012 showed significantly decreased bond strengths, with an increased number of adhesive failures.5,14,37 The lower bond strength has been attributed to an incomplete infiltration of the demineralized collagen network by the bonding resin.38 This shortcoming has been overcome in UAs through the addition of low viscosity monomers like HEMA, that increase the affinity to the hydrophilic wet collagen network, as has been done earlier for one-step etch-and-rinse adhesives....
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...Nevertheless, a clear correlation to higher bond trengths by these enhanced interfaces has not been estabished.18 According to their ability to demineralize dentine, SEAs ave been classified into strong (pH 1), intermediately strong pH between 1 and 2), mild (pH 2) and ultra-mild (pH >2.5).1 his ‘‘etching aggressiveness’’ is strongly related with their nteraction depth in dentine,19 which varies from few anometers in ultra-mild SEAs20 to several micrometres, in he strong SEAs.1 Thus, hybrid layers of mild SEAs are much hinner than those generated by stronger SEAs or etch-andinse adhesives, although hybrid layer thickness may not be of ajor importance to bonding efficacy.2 By demineralizing entine only incompletely, mild SEAs leave HAp partially ttached to collagen, so it is available for chemical interction12 and protective nanolayering.21 At present, there is only sparse literature reporting on the mode,7,22 although bond strength degradation has been observed after ageing for pre-etched Q9samples.23 The aim of the present study was to compare the bond strength and resin penetration pattern into dentine of three commercial UAs applied in two different etching modes (i.e. SE or ER)....
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236 citations
217 citations
References
1,721 citations
"State of the art of self-etch adhes..." refers background in this paper
...[27] Van Meerbeek B, De Munck J, Yoshida Y, Inoue S, Vargas M, Vijay P, et al....
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...On the other hand, it also underlines the great advanage of mild self-etch adhesives as they keep collagen not only ncapsulated and thus protected by HAp, but also provide the otential to chemically interact with HAp [27,29]....
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...The resultant two-fold micro-mechanical and chemial bonding mechanism of mild self-etch adhesives closely esembles that of glass-ionomers [27,45]....
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...echanically interlocked in the created porosities [27]....
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1,086 citations
"State of the art of self-etch adhes..." refers background in this paper
...[38] Breschi L, Mazzoni A, Ruggeri A, Cadenaro M, Di Lenarda R, De Stefano DE....
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1,035 citations
"State of the art of self-etch adhes..." refers background in this paper
...micro-mechanical interlocking is a prerequisite to achieve good bonding (certainly within clinical circumstances), the potential benefit of additional chemical interaction between functional monomers and tooth substrate components has recently regained attention [28,29]....
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...In this sense, the chemical bonding promoted by 10-MDP is not only more effective, but also more stable in water than that provided by 4-MET and phenyl-P, in this order [29]....
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...[29] Yoshida Y, Nagakane K, Fukuda R, Nakayama Y, Okazaki M, Shintani H, et al....
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...On the other hand, it also underlines the great advanage of mild self-etch adhesives as they keep collagen not only ncapsulated and thus protected by HAp, but also provide the otential to chemically interact with HAp [27,29]....
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...in 2004 using XPS (or X-ray photo-electron spectroscopy) [29]....
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962 citations
"State of the art of self-etch adhes..." refers background in this paper
...[40] Pashley DH, Tay FR, Yiu C, Hashimoto M, Breschi L, Carvalho RM, et al....
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744 citations
"State of the art of self-etch adhes..." refers background in this paper
...[1] Peumans M, Kanumilli P, De Munck J, Van Landuyt K, Lambrechts P, Van Meerbeek B....
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...Glass-ionomers have indeed been ecorded with the lowest annual failure rate with regard to lass-V adhesive restorations [1,26]....
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...Finally, inferior clinical performance of one-step adhesives confirmed the less favorable laboratory findings, while it must also be said that the latest generation of one-step adhesives definitely perform better [1,26]....
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