Single-step adhesives are permeable membranes

Tay, Franklin R.; Pashley, David H.; Suh, B.I.; Carvalho, Ricardo Marins de; Itthagarun, Anut

doi:10.1016/s0300-5712(02)00064-7

Cited by 517 publications

(491 citation statements)

References 23 publications

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“…Further experiments should also be performed to determine the electrical impedance of these hydrophilic adhesive layers, when they are employed according to the manufacturers' instructions, or in combination with more hydrophobic adhesive coatings. 26,36 The phenomenon of increased adhesive permeability is similar to what was previously reported for singlestep self-etch adhesives 16 , and appears to be a characteristic of simplified adhesives. This is probably caused by the absence of a more hydrophobic bonding resin layer that is employed in conventional total-etch and self-etch adhesives.…”

Section: Discussionsupporting

confidence: 77%

“…12,13 They may act as 'hydrophilic solids' that continues to draw water from the underlying vital dentine after polymerisation. 14 Because of their relatively high permeability, single-step self-etch adhesives were reported to behave as permeable membranes after polymerisation, 15,16 allowing the diffusion of water from the hybridised dentine to the adhesive surfaces. The phenomenon of increased adhesive permeability has also been recently reported for a single-bottle total-etch adhesive 17 , and was thought to contribute partially, apart from adverse acid-base reactions, for the incompatibility that was observed between acidic simplified-step adhesives and auto-cured resin composites that utilized basic tertiary amines as catalytic components.…”

Section: Introductionmentioning

confidence: 99%

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Single-bottle adhesives behave as permeable membranes after polymerization. I. In vivo evidence

Tay

Frankenberger

Krejci

et al. 2004

Journal of Dentistry

254

223

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Summary Objectives: This study tested the hypothesis that single-bottle total-etch adhesives are effective in reducing dentine permeability under in vivo conditions. Methods: Crown preparations on vital human teeth were performed under local analgesia as part of the treatment plan for prosthetic rehabilitation. Four singlebottle adhesives (Single Bond, 3M ESPE; Excite DSC, Ivoclar Vivadent; Prime and Bond NT Dual-Cure, Dentsply DeTrey and One-Step, Bisco Inc.) were applied to the cut dentine after acid-etching. Polyvinyl siloxane impressions were taken, using an ultralow viscosity impression material, of the smear layer-covered dentine before applying the adhesives to deep vital dentine, and after adhesive placement. Additional impressions were taken of the adhesive-sealed dentine following the removal of the provisional prostheses after a 7-10 day period. Epoxy resin replicas of the crown preparations were examined with scanning electron microscopy to evaluate the extent of dentinal fluid transudation during pre-bonded, immediately bonded and post-bonded periods. Results: Dentinal fluid transudation from localised areas that were close to the dental pulp was universally observed from all epoxy resin replicas, irrespective of the adhesive employed. The transudation of dentinal fluid from the control smear layer-covered dentine of each crown preparation was comparatively mild when compared to the extent that was observed after totaletching and application of the single-bottle adhesive. Dentinal fluid droplets were specifically located over the surface of the adhesive layer. of dentinal fluid occurred even after the removal of the provisional prostheses, and was considerably more profuse in subjects who opted for the fitting of the permanent prostheses without the use of a local anaesthetic solution. Conclusion: Single-bottle adhesives, because of their lack of a comparatively more hydrophobic bonding resin layer, behave as permeable membranes after polymerisation. They permit the continuous transudation of dentinal fluid and do not provide a hermetic seal in vital deep dentine. Although the relatively slow rate of diffusion of dentinal fluid is unlikely to result in post-operative cold sensitivity, it may interfere with the optimal polymerisation of dual-cured or auto-cured composites or resin cements in both direct and indirect restorations. q

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Section: Discussionsupporting

confidence: 77%

Section: Introductionmentioning

confidence: 99%

Single-bottle adhesives behave as permeable membranes after polymerization. I. In vivo evidence

Tay

Frankenberger

Krejci

et al. 2004

Journal of Dentistry

254

223

View full text Add to dashboard Cite

show abstract

“…[25][26] Incorporating high concentrations of acidic monomers might lead to water sorption, resulting in a decline in the marginal integrity of the adhesives. Water diffusion into the bonding interface created by adhesive and tooth substrate causes resin components to swell and plasticize.…”

Section: Discussionmentioning

confidence: 99%

Effect of Thermal Cycling on Enamel Bond Strength of Single-step Self-etch Systems

Amano

Yamamoto

Tsubota

et al. 2006

Operative Dentistry

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After thermal cycling, some recently introduced simplified bonding systems showed no change in enamel bond strengths. The systems used were Absolute, Clearfil tri-S Bond, G-Bond and One-Up Bond F Plus. Bovine mandibular incisors were mounted in self-curing resin, and the facial surfaces were wet ground with #600 SiC paper. Adhesives were applied on the prepared enamel surfaces and light irradiated according to each manufacturer's instructions. Resin composites were condensed into a mold (ø4x2 mm) and light irradiated for 30 seconds. Thirty specimens per adhesive systems were divided into 1 of 3 test groups (n=10) following storage in water at 37°C for 24 hours. The specimens were then stored in 37°C water for 24 hours, followed by thermal cycling 10,000 and 20,000 times between 5°C and 60°C. After each storage condition, the specimens were tested in shear mode at a crosshead speed of 1.0-mm/minute. One-way ANOVAs and Tukey HSD test at a level of 0.05 were conducted.After 24 hours of water storage, the mean enamel bond strengths ranged from 11.3 to 16.9 MPa, and Clearfil tri-S Bond showed significantly higher bond strength. After thermal cycling, the mean bond strengths ranged from 8.3 to 20.7 MPa. The changes in enamel bond strengths were different among the adhesive systems tested. Failure modes after the test were commonly adhesive failure associated with partial cohesive failure adhesive in resin.

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“…If this layer is porous, H 2 O molecules may penetrate and allow hydrolysis to occur. A possible reason for the decrease of shear bond strength of Panavia 21 after thermocycling could be explained by the fact, that the self-etching primer does not lead to the establishment of a dense hybridization layer [35,37]. The acid-base reaction between the acidic monomers of the self-etching primer with the amines used in the initiator system of the cement leads to a lower polymerization degree.…”

Section: The Relatively Low Bond Strength Values Of Relyx Unicem In Tmentioning

confidence: 99%

“…This enables hydrolysis of the cement bond and subsequently reduces bonding performance over time [37][38][39].…”

Section: The Relatively Low Bond Strength Values Of Relyx Unicem In Tmentioning

confidence: 99%

Shear bond strength of resin cements to human dentin

et al. 2008

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Single-step adhesives are permeable membranes

Cited by 517 publications

References 23 publications

Single-bottle adhesives behave as permeable membranes after polymerization. I. In vivo evidence

Single-bottle adhesives behave as permeable membranes after polymerization. I. In vivo evidence

Effect of Thermal Cycling on Enamel Bond Strength of Single-step Self-etch Systems

Shear bond strength of resin cements to human dentin

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