Micromorphological spectrum from overdrying to overwetting acid-conditioned dentin in water-free, acetone-based, single-bottle primer/adhesives

Tay, Franklin R.; Gwinnett, John; Wei, Stephen H.Y.

doi:10.1016/s0109-5641(96)80029-7

Cited by 223 publications

(151 citation statements)

References 22 publications

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“…213,214,215 Basically, ethanol dehydrates the demineralized collagen matrix and coaxes hydrophobic monomers into it. 216 This technique also prevents phase separation of hydrophobic resin monomers in the presence of water, 217,218,219 since the latter is completely replaced by ethanol prior to the application of the ethanolsoluble monomers. 220,221 Additionally, the elimination of residual water seems to contribute to decrease or even eliminate hydrolytic enzymatic degradation of collagen fibrils, 212,222 thereby increasing bond durability and stability.…”

Section: Ethanol -Wet Bondingmentioning

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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Section: Ethanol -Wet Bondingmentioning

confidence: 99%

Bonding efficiency and durability: current possibilities

et al. 2017

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“…The conversion of the resin decreased from ~54% to ~25% when more than 20% water was added [17]. The extent of monomer conversion [19][20][21][22] and the presence of phase separations in the presence of water [6,[23][24][25][26] during polymerization are very influential on the structure and properties of the resulting polymer.…”

Section: Introductionmentioning

confidence: 99%

Effects of water content and initiator composition on photopolymerization of a model BisGMA/HEMA resin

Guo¹,

Wang²,

Spencer³

et al. 2008

Dental Materials

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Aims-The purpose of this study was to evaluate the effects of photoinitiator type and water content on the polymerization rate (R p ) and degree of conversion (DC) of a model BisGMA/HEMA-based resin.Materials and methods-The comonomer mixture consisted of BisGMA/HEMA (60/40 by weight). Different two-or three-component photoinitiator systems were incorporated. Twocomponent systems were 0.5% CQ (camphorquinone) and 0.5% DMAEMA (2-(dimethylamino) ethyl methacrylate) or 0.5% CQ and 0.5% 4E (Ethyl 4-dimethylaminobenzoate). The threecomponent systems were added 1% DPIHP (diphenyliodonium hexafluorophosphate) to the above systems. Each system was tested as made, or after addition of 5, 10, 15wt% water. When cured under a conventional dental light, the R p and DC of each formulation was determined using time-resolved attenuated total reflection (ATR)-Fourier transform infrared (FTIR) spectroscopy.Results-For mixtures containing two-component initiator systems, when the hydrophobic initiator CQ was used in combination with hydrophilic DMAEMA, R p s and DCs were dramatically decreased as a function of water content. The R p s and DCs of the hydrophobic CQ/4E system were higher than those of the CQ/DMAEMA system in the presence of water. For three-component initiator systems, incorporation of DPIHP enhanced the polymerization of all mixtures in the presence of water compared to their counterpart two-component initiators. Interestingly, the CQ/DMAEMA caused greater DC and Rp when DPIHP was used.Significance-The hydrophobicity/hydrophilicity of photoinitiator components significantly affects both the DC as well as R p when in the presence of water. The results indicate that formulation of photoinitiator components should be based on the effectiveness of the bonding systems under both dry and wet conditions.

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“…Dentin surfaces were conditioned with a universal adhesive (Single Bond Universal, 3M 7 ESPE, Seefeld, Germany, SBU). Application protocols of the materials according to the manufacturers` instructions are presented in Table 1.…”

Section: Experimental Groupsmentioning

confidence: 99%

“…Subsequently, adhesive resin, hydrophobic cross-linker resin, is applied as the third step separately in a single solution [6]. The main disadvantage of TE system is that there is a risk of collagen fibre collapse during drying the demineralized dentin that leads to a decrease in bond strength [7,8]. The incomplete impregnation of collagen fibers and the need to protect them against the degrading mechanisms led to the development of another category of adhesive system, namely SE adhesives.…”

Section: Introductionmentioning

confidence: 99%

Does 2% chlorhexidine digluconate cavity disinfectant or sodium fluoride/hydroxyethyl methacrylate affect adhesion of universal adhesive to dentin?

Kuşdemir

Çetin

Özsoy

et al. 2015

Journal of Adhesion Science and Technology

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Abstract:The objectives of this study were to investigate the adhesion of a universal adhesive used either in total-etch or self-etch mode with and without 2% chlorhexidine digluconate cavity disinfectant (CHX) or sodium fluoride/hydroxyethyl methacrylate (NaF/HEMA) to dentin. Dentin surfaces of extracted human non-carious third molar teeth (N=18) were exposed and randomly assigned to two groups. Half of the teeth were conditioned with total-etch and the other with self-etch adhesive mode. The teeth were then randomly divided into two groups where half were cleaned with 2% CHX (Cavity Cleanser, Bisco, CC) and the other half with NaF/HEMA (Aqua Prep F, Bisco, APF). Control groups in total-etch (C1) and self-etch (C2) adhesive system did not receive any cavity disinfectant.Dentin surfaces were conditioned with universal adhesive (Single Bond Universal, SBU) and resin composite blocks (3M Z550) were bonded incrementally on the conditioned dentin using a mould. The teeth were stored in water for 48 h and from each tooth beam-shaped specimens (1 mm 2 ) were prepared (n=14, per group). Microtensile bond strength (MBS) was were predominantly adhesive between the dentin and the adhesive resin. Mixed failures were more common for both C1 and C2 and total etch-CC combination.

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Micromorphological spectrum from overdrying to overwetting acid-conditioned dentin in water-free, acetone-based, single-bottle primer/adhesives

Cited by 223 publications

References 22 publications

Bonding efficiency and durability: current possibilities

Bonding efficiency and durability: current possibilities

Effects of water content and initiator composition on photopolymerization of a model BisGMA/HEMA resin

Does 2% chlorhexidine digluconate cavity disinfectant or sodium fluoride/hydroxyethyl methacrylate affect adhesion of universal adhesive to dentin?

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