Influence of previous acid etching on dentin bond strength of self-etch adhesives

Ikeda, Masahiko; Kurokawa, Hiroyasu; Sunada, Noriatsu; Tamura, Yukio; Takimoto, Masayuki; Murayama, Ryosuke; Ando, Susumu; Miyazaki, Masashi

doi:10.2334/josnusd.51.527

Cited by 19 publications

(20 citation statements)

References 20 publications

(21 reference statements)

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“…[27][28][29][30][31] Incomplete infiltration of bonding agent into the demineralized collagen network might be the reason for decreased bond strength. 29,30,32 This phenomenon was confirmed by the results of the present study through observation of significantly lower bond strength in the phosphoric acid-conditioned group in comparison with the control group despite the fact that phosphoric acid removed Failure mode analysis revealed a case of cohesive failure in dentin, which was attributed to an extensively demineralized dentin into which the bonding resin could not penetrate properly, contributing to a formation of a prone-to-break weak zone. 33 Clearfil S3 Bond depends on its 10-MDP (10-methacryloyloxydecyl dihydrogen phosphate) monomer to decalcify, penetrate and create a bond with calcium ions and hydroxyapatite, simultaneously paving the way for the two-fold micromechanical and chemical bonding mechanism.…”

Section: Discussionsupporting

confidence: 76%

Effect of Three Different Contamination Removal Methods on Bond Strength of a Self-etching Adhesive to Dentin Contaminated with an Aluminum Chloride Hemostatic Agent

Oskoee¹,

Bahari²,

Ajami³

et al. 2013

The Journal of Contemporary Dental Practice

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Aim: This study evaluated the effect of three different contamination removal methods on bond strength of one-step self-etching adhesive to dentin contaminated with an aluminum chloride hemostatic agent. Materials and methods:One hundred noncarious adult molars were used in this study; 2-mm-thick dentin disks were prepared and randomly assigned to 5 groups (n = 20). Group I: control; group II: hemostatic agent-contaminated; group III: hemostatic agent-contaminated and rinsing with water; group IV: hemostatic agent-contaminated and ethylene diamine tetraacetic acid (EDTA) application; and group V: hemostatic agent-contaminated and phosphoric acid application. Clearfil S3 Bond was used to bond composite to dentin surfaces. Subsequent to adding composite cylinders the shear bond strength test was performed. Data were analyzed by one-way ANOVA and Tukey test. Two additional specimens from each group were prepared and evaluated under scanning electron microscope (SEM).Results: There were statistically significant differences in bond strength among the groups (p < 0.001). In two-by-two comparisons statistically significant differences were observed in bond strength values between all the groups (p < 0.001) except for groups I and IV (p = 0.933). Conclusion:Aluminum chloride hemostatic agent adversely affected the bond strength of self-etch adhesive to dentin. However, application of EDTA increased the bond strength to the level of normal dentin.Clinical significance: EDTA and phosphoric acid removed aluminum chloride hemostatic agent contamination of dentin surfaces. However, unlike EDTA phosphoric acid failed to increase the bond strength of self-etch adhesive to dentin to the level of the control group.

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Section: Discussionsupporting

confidence: 76%

Effect of Three Different Contamination Removal Methods on Bond Strength of a Self-etching Adhesive to Dentin Contaminated with an Aluminum Chloride Hemostatic Agent

Oskoee¹,

Bahari²,

Ajami³

et al. 2013

The Journal of Contemporary Dental Practice

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show abstract

“…When dentin is etched, collapse of the unsupported collagen network and air exposure reportedly inhibit resin monomer penetration, resulting in poor bonding [26,27]. This may explain the higher initial nominal HB% values when compared with the two-step self-etch adhesive CSEB.…”

Section: Xxxe8mentioning

confidence: 93%

Assessment of current adhesives in class I cavity: Nondestructive imaging using optical coherence tomography and microtensile bond strength

et al. 2015

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“…These conclusions are linked to the possibility of overly-aggressive dentin etching that might cause an excessive removal of the dentinal smear layer, hindering a complete monomer infiltration into the collagen network [28].…”

Section: Resultsmentioning

confidence: 99%

“…This additional acid etching step should work selectively on the enamel and determines increased bond strength values. It could be speculated that the better adhesive performances are linked to a micro-mechanical retention determined by enhanced enamel porosity [28].…”

Section: Resultsmentioning

confidence: 99%

Effects of Pre-Etching in Class V Cavities Restored with Silorane and Methacrylate-Based Composites

Giudice

Lizio

et al. 2016

Dent. Med. Probl.

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Self-etching adhesive (SEA) systems were recently introduced to simplify the bonding procedure, reducing the number of operative steps, and were initially considered a good replacement for the etch-and-rinse adhesive system that uses orthophosphoric acid (H₃PO₄) (PA) for enamel and dentin etching [1]. However, the recent literature underlines that the effectiveness of the enamel bonding with SEA is questionable [2]. This technique in fact provides a bond strength of compos- AbstractBackground. Self-etching adhesive (SEA) systems were recently introduced to simplify the bonding procedure and were initially considered a good replacement for the etch-and-rinse adhesive system that uses orthophosphoric acid (PA) for enamel and dentin etching. Siloranes, a new class of ring opening monomers, were synthesized to overcome the problems related to polymerization shrinkage. This new type of monomer is obtained from the reaction of oxirane and silorane molecules with a volumetric shrinkage determined to be 0.99%. Objectives. To assess the influence of preliminary phosphoric acid etching on the sealing ability of silorane-and methacrylate-based composites. Material and methods. Standard class V cavities were prepared on the buccal side of 48 extracted, sound, human premolars. The specimens were randomly divided in two groups: A) Silorane System ® /Filtek Silorane ® ; B) Scotchbond Universal ® /Filtek Supreme ® . Each group was divided in two subgroups. A1) and B1): no preetching was performed. A2) and B2): selective, enamel pre-etching was performed. The interfacial sealing ability of the materials was evaluated by scoring the depth of methylene blue penetration through optical microscope observations. The differences in infiltration scores recorded for the tested materials were evaluated for statistical significance (Kruskal-Wallis ANOVA, Mann-Whitney U test, p < 0.05).Results. No groups showed a "0" score, and group B2 had the lowest individual score, reaching at least a "2" score.In the silorane groups, pre-etching decreased the infiltration score but the result was not statistically significant. No statistically significant differences emerged among the tested materials except for the Bis-GMA composite restored group where the pre-etching significantly reduced the interfacial leakage (p < 0.05).Conclusions. Selective enamel pre-etching significantly reduced the marginal infiltration in class V cavities, restored with Bis-GMA composite and a self-etching adhesive system. The low-shrinking silorane composite achieved better sealing ability (Dent. Med. Probl. 2016, 53, 3, 365-372).

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Influence of previous acid etching on dentin bond strength of self-etch adhesives

Cited by 19 publications

References 20 publications

Effect of Three Different Contamination Removal Methods on Bond Strength of a Self-etching Adhesive to Dentin Contaminated with an Aluminum Chloride Hemostatic Agent

Effect of Three Different Contamination Removal Methods on Bond Strength of a Self-etching Adhesive to Dentin Contaminated with an Aluminum Chloride Hemostatic Agent

Assessment of current adhesives in class I cavity: Nondestructive imaging using optical coherence tomography and microtensile bond strength

Effects of Pre-Etching in Class V Cavities Restored with Silorane and Methacrylate-Based Composites

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