State of the art of self-etch adhesives
TL;DR: The major shortcomings of the most simple-to-use one-step (self-etch) adhesives are addressed and special attention is devoted to the AD-concept and the benefit of chemical interfacial interaction with regard to bond durability.
About: This article is published in Dental Materials.The article was published on 2011-01-01. It has received 1059 citations till now.
Citations
More filters
TL;DR: The bonding agents DMADDM and NAg are promising to combat residual bacteria in tooth cavity and invading bacteria at tooth-restoration margins to inhibit caries and are promising for use into a wide range of dental adhesive systems and restoratives.
131 citations
TL;DR: By combining nanoparticles of silver/QAM/NACP, a new class of composites and adhesives with antibacterial and remineralization double benefits was developed and has potential to significantly improve restorative and preventive dentistry.
131 citations
TL;DR: This review is focused on the analysis of factors that have a potential role in the setting of adhesive materials and thus the ultimate characteristics of the adhesive layer and the stability of the resin-dentin interface.
128 citations
TL;DR: Although Universal Adhesives can chemically bond to various tooth and direct/indirect restorative substrates, the stability of this bond is material-dependent and subject to hydrolytic degradation, which undermines the versatility of UAs.
Abstract: Increasing demand for simplified and user-friendly adhesive systems has led to the development of a new class of adhesives termed as Universal Adhesives (UAs). The term "Universal" reflects manufacturers' claims that these adhesives can be applied with any adhesion strategy and offer the versatility of use with a variety of direct and indirect restorative materials. The aim of this review was to synthesize the literature regarding the current status of UAs, their adhesion potential to various substrates and their performance in different restorative situations. In vitro studies, clinical trials and systematic reviews were identified utilizing controlled vocabulary and keyword searches in Medline and EMBASE databases. About 282 studies (272 in vitro studies; 11 clinical studies) were included. Available laboratory and clinical evidence does not support the claim that UAs can be used with any adhesive strategy. Although, they can chemically bond to various tooth and direct/indirect restorative substrates, the stability of this bond is material-dependent and subject to hydrolytic degradation. Hence, additional measures are still needed to ensure long-term durability. which undermines the versatility of UAs. The lack of long-term data regarding the clinical performance of UAs further complicates clinical decision-making. © 2019 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 107B: 2121-2131, 2019.
128 citations
TL;DR: The bonding effectiveness of flowable SACs underscores that of 1-SEa's and one 'gold-standard' 3-E&Ra when combined with their proprietary flowable composite.
123 citations
References
More filters
Journal Article•
TL;DR: The basic bonding mechanism to enamel and dentin of these three approaches is demonstrated by means of ultramorphological and chemical characterization of tooth-biomaterial interfacial interactions and confirms that conventional three-step etch&rinse adhesives still perform most favorably and are most reliable in the long-term.
Abstract: Bonding to tooth tissue can be achieved through an "etch&rinse," "self-etch" or "glass-ionomer" approach. In this paper, the basic bonding mechanism to enamel and dentin of these three approaches is demonstrated by means of ultramorphological and chemical characterization of tooth-biomaterial interfacial interactions. Furthermore, bond-strength testing and measurement of marginal-sealing effectiveness (the two most commonly employed methodologies to determine "bonding effectiveness" in the laboratory) are evaluated upon their value and relevance in predicting clinical performance. A new dynamic methodology to test biomaterial-tooth bonds in a fatigue mode is introduced with a recently developed micro-rotary fatigue-testing device. Eventually, today's adhesives will be critically weighted upon their performance in diverse laboratory studies and clinical trials. Special attention has been given to the benefits/drawbacks of an etch&rinse versus a self-etch approach and the long-term performance of these adhesives. Correlating data gathered in the laboratory with clinical results clearly showed that laboratory research CAN predict clinical effectiveness. Although there is a tendency to simplify bonding procedures, the data presented confirm that conventional three-step etch&rinse adhesives still perform most favorably and are most reliable in the long-term. Nevertheless, a self-etch approach may have the best future perspective. Clinically, when adhesives no longer require an "etch&rinse" step, the application time, and probably more importantly, the technique-sensitivity are substantially reduced. Especially "mild," two-step self-etch adhesives that bond through a combined micromechanical and chemical interaction with tooth tissue closely approach conventional three-step systems in bonding performance.
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....
[...]
...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]....
[...]
...The resultant two-fold micro-mechanical and chemial bonding mechanism of mild self-etch adhesives closely esembles that of glass-ionomers [27,45]....
[...]
...echanically interlocked in the created porosities [27]....
[...]
TL;DR: This study critically discusses the latest peer-reviewed reports related to formation, aging and stability of resin bonding, focusing on the micro and nano-phenomena related to adhesive interface degradation.
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....
[...]
TL;DR: Besides self-etching dentin, specific functional monomers have additional chemical bonding efficacy that is expected to contribute to their adhesive potential to tooth tissue.
Abstract: Mild self-etch adhesives demineralize dentin only partially, leaving hydroxyapatite around collagen within a submicron hybrid layer. We hypothesized that this residual hydroxyapatite may serve as a receptor for chemical interaction with the functional monomer and, subsequently, contribute to adhesive performance in addition to micro-mechanical hybridization. We therefore chemically characterized the adhesive interaction of 3 functional monomers with synthetic hydroxyapatite, using x-ray photoelectron spectroscopy and atomic absorption spectrophotometry. We further characterized their interaction with dentin ultra-morphologically, using transmission electron microscopy. The monomer 10-methacryloxydecyl dihydrogen phosphate (10-MDP) readily adhered to hydroxyapatite. This bond appeared very stable, as confirmed by the low dissolution rate of its calcium salt in water. The bonding potential of 4-methacryloxyethyl trimellitic acid (4-MET) was substantially lower. The monomer 2-methacryloxyethyl phenyl hydrogen phosphate (phenyl-P) and its bond to hydroxyapatite did not appear to be hydrolytically stable. Besides self-etching dentin, specific functional monomers have additional chemical bonding efficacy that is expected to contribute to their adhesive potential to tooth tissue.
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]....
[...]
...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]....
[...]
...[29] Yoshida Y, Nagakane K, Fukuda R, Nakayama Y, Okazaki M, Shintani H, et al....
[...]
...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]....
[...]
...in 2004 using XPS (or X-ray photo-electron spectroscopy) [29]....
[...]
TL;DR: It is hypothesized that collagen degradation occurred over time, via host-derived matrix metalloproteinases that are released slowly over time through proteolytic enzyme inhibitors or mineral oil.
Abstract: Incompletely infiltrated collagen fibrils in acid-etched dentin are susceptible to degradation. We hypothesize that degradation can occur in the absence of bacteria. Partially demineralized collagen matrices (DCMs) prepared from human dentin were stored in artificial saliva. Control specimens were stored in artificial saliva containing proteolytic enzyme inhibitors, or pure mineral oil. We retrieved them at 24 hrs, 90 and 250 days to examine the extent of degradation of DCM. In the 24-hour experimental and 90- and 250-day control specimens, we observed 5- to 6-microm-thick layers of DCM containing banded collagen fibrils. DCMs were almost completely destroyed in the 250-day experimental specimens, but not when incubated with enzyme inhibitors or mineral oil. Functional enzyme analysis of dentin powder revealed low levels of collagenolytic activity that was inhibited by protease inhibitors or 0.2% chlorhexidine. We hypothesize that collagen degradation occurred over time, via host-derived matrix metalloproteinases that are released slowly over time.
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....
[...]
TL;DR: Comparison of retention of class-V adhesive restorations as a measure to determine clinical bonding effectiveness of adhesives revealed that glass‐ionomers most effectively and durably bond to tooth tissue.
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....
[...]
...Glass-ionomers have indeed been ecorded with the lowest annual failure rate with regard to lass-V adhesive restorations [1,26]....
[...]
...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]....
[...]