Water Concentration in Self-etching Primers Affects their Aggressiveness and Bonding Efficacy to Dentin

Hiraishi, Noriko; Nishiyama, Norihiro; Ikemura, Kunio; Yau, J. Y. Y.; King, Nigel M.; Tagami, Junji; Pashley, David H.; Tay, Franklin R.

doi:10.1177/154405910508400714

Cited by 86 publications

(64 citation statements)

References 24 publications

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“…With self-etching primers and adhesives, water is an indispensable component to the effective ionization of acidic adhesive monomers and suitable demineralization of dental hard tissues 5,23) . In the present study, the higher bond strength of SA-1 was suggested to be due to the ionized acidic adhesive monomers (i.e., 6-MHPA and 4-AET) that facilitated chemical interaction with hydroxyapatite [8][9][10] , thereby creating micromechanical retention [2][3][4][5] in the teeth to form strong adhesion.…”

Section: Discussionmentioning

confidence: 99%

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Design of a new self-etching HEMA-free adhesive

2009

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The effect of the pH value of single-bottle, self-etching 2-hydroxyethyl methacrylate (HEMA)-free adhesives on their shelf lives with bonding ability was investigated. Two experimental adhesives [SA-1 (pH=3.0); SA-2 (pH=2.1)] comprising 6-methacryloyloxyhexyl phosphonoacetate (6-MHPA), 4-acryloyloxyethyltrimellitic acid (4-AET), Bis-GMA, water, and acetone, in which the pH values were controlled with 1N NaOH, were stored for 6 weeks at 50°C in air. Shear bond strengths of aged adhesives to ground and unetched enamel and dentin were measured at a crosshead speed of 1.0 mm/min, and the data were analyzed by ANOVA. The resin-tooth bonding interfaces were further observed with SEM. With SA-1, the bond strengths to the tooth substrates were maintained throughout the 6 weeks. However, with SA-2, bond strength significantly degraded from weeks 4 to 6 (p<0.05). Based on SEM observation, non-aged and 6-week-aged adhesive SA-1 appeared to be strongly adhered to both enamel and dentin. It was found that the stability of the self-etching adhesive was influenced by its pH value.

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Section: Discussionmentioning

confidence: 99%

“…On the other hand, nanoleakage 23,24) defined as a leakage within hybrid layers, which occurred due to regions of incomplete resin infiltration has been reported. With regard to this problem, two-step self-etching primers and adhesives can adhere to enamel and dentin without the use of a separate acid-etching step [2][3][4][5] .…”

Section: Discussionmentioning

confidence: 99%

Design of a new self-etching HEMA-free adhesive

2009

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“…[5][6][7] The adverse effect of one-step self-etch adhesive hydrophilicity on bonding to dentin has been reported. [8][9][10][11][12] In vitro dentin bond strength tests indicate that the hydrophilicity of one-step self-etch adhesives is a contributive cause for reduced short-term 13 and medium-term values.…”

Section: Introductionmentioning

confidence: 99%

Clinical Effectiveness of a Hydrophobic Coating Used in Conjunction With a One-step Self-etch Adhesive: An 18-month Evaluation

Sartori

Peruchi²,

Guimarães

et al. 2013

Operative Dentistry

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This 18-month clinical evaluation showed that the use of a hydrophobic resin coat over a one-step self-etch adhesive does not improve clinical performance in noncarious cervical lesions. SUMMARYThe purpose of this randomized clinical trial was to evaluate the clinical performance of a one-step self-etch adhesive in noncarious cervical lesions with inclusion of a hydrophobic bonding layer not included in the original bonding system as a test of potentially improved bonding. Patients with noncarious cervical lesions received two or four restorations after being randomly assigned to two adhesive technique protocols (n=32): EB, application of Adper Easy Bond (3M ESPE) following manufacturer's instructions; and EB+B, application of Adper Easy Bond, immediately followed by the application of a hydrophobic resin coat (Scotchbond Multi-Purpose Bonding Agent, 3M ESPE). All restorations were restored with a microhybrid composite (Filtek Z250, 3M ESPE). Clinical effectiveness was recorded in terms of retention, marginal discoloration, marginal integrity, postoperative sensitivity,

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“…Increased water concentration may indeed dilute the adhesive monomers and lower their inward rate of diffusion as well as limit the degree of polymerization. 22 In the present study, intrapulpal pressure was simulated during bonding and storage, which could intensify the negative effect of residual water retention.…”

Section: Discussionmentioning

confidence: 96%

Bond Durability of Adhesives Containing Modified-monomer With/Without-fluoride After Aging in Artificial Saliva and Under Intrapulpal Pressure Simulation

El-Deeb¹,

Sherbiney

Mobarak

2013

Operative Dentistry

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Adhesives with hydrolytically stable modified monomers could be a promising approach to enhance bonding durability. SUMMARYObjective: To evaluate the dentin bond strength durability of adhesives containing modified-monomer with/without-fluoride after storage in artificial saliva and under intrapulpal pressure simulation (IPPS).Materials and Methods: The occlusal enamel of 48 freshly extracted teeth was trimmed to expose midcoronal dentin. Roots were sectioned to expose the pulp chamber and to connect the specimens to the pulpal-pressure assembly. Specimens were assigned into four groups (n=12) according to adhesive system utilized: a two-step etch-and-rinse adhesive system (SB, Adper Single Bond 2, 3M ESPE), a two-step self-etch adhesive system (CSE, Clearfil SE Bond, Kuraray Medical Inc), and two single-step self-etch adhesives with the same modified monomer (bis-acrylamide)-one with fluoride (AOF, AdheSE One F, Ivoclar-Vivadent) and the other without (AO, AdheSE One, Ivoclar-Vivadent). Bonding was carried out while the specimens were subjected to 15-mm Hg IPPS. Resin composite (Valux Plus, 3M ESPE) buildups were made. After curing, specimens were aged in artificial saliva and under 20-mm Hg IPPS at 378C in a specially constructed incubator either for 24 hours or six months prior to testing. Bonded specimens (n=6/group) were sectioned into sticks (n=24/ group) with a cross section of 0.9 6 0.01 mm 2 and subjected to microtensile bond strength (lTBS) testing using a universal testing machine. Data were statistically analyzed using two-way analysis of variance (ANOVA) with repeated measures, one-way ANOVA tests, and a t-test (p,0.05). Failure modes were determined using a scanning electron microscope.Results: The lTBS values of SB and CSE fell significantly after six-month storage in artificial saliva and under IPPS, yet these values remained significantly higher than those for the other two adhesives with modified monomers. There was no significant difference in the bond strength values between fluoridecontaining and fluoride-free self-etch adhesive systems (AOF and AO) after 24 hours or six months. Modes of failure were mainly adhesive and mixed.Conclusions: Based on the results of this study, 1) Fluoride addition did not affect dentin bond durability; and 2) despite the fact that the single-step adhesive system with modified monomer showed stability, bond strengths associated with these systems remained lower than those of multistep adhesive systems.

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Water Concentration in Self-etching Primers Affects their Aggressiveness and Bonding Efficacy to Dentin

Cited by 86 publications

References 24 publications

Design of a new self-etching HEMA-free adhesive

Design of a new self-etching HEMA-free adhesive

Clinical Effectiveness of a Hydrophobic Coating Used in Conjunction With a One-step Self-etch Adhesive: An 18-month Evaluation

Bond Durability of Adhesives Containing Modified-monomer With/Without-fluoride After Aging in Artificial Saliva and Under Intrapulpal Pressure Simulation

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