Shear bond strength of resin cements to human dentin

Holderegger, Claudia; Sailer, Irena; Schuhmacher, Caroline; Schläpfer, Ragna; Hämmerle, Christoph H.F.; Fischer, Jens

doi:10.1016/j.dental.2007.11.021

Cited by 98 publications

(84 citation statements)

References 29 publications

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“…This finding is in accordance to the results of other studies [20,30]. Water absorption of different self-adhesive resin cements varies [31].…”

Section: Discussionsupporting

confidence: 93%

“…At present, no scientific literature is available of the newly introduced self-adhesive resin cements and their bond strength after long-term aging. Whereas studies show that aging can have a negative impact on the shear bond strength of conventional resin cements [20], the bond strength of the newly introduced self-adhesive resin cements after long-term aging has not been investigated yet. [21].…”

Section: Introductionmentioning

confidence: 99%

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Are self-adhesive resin cements a valid alternative to conventional resin cements? A laboratory study of the long-term bond strength

et al. 2012

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OBJECTIVES: The aim of the study was to test whether or not the shear bond strengths of six self-adhesive resin cements to dentin and to glass-ceramic, 24h and long-term-aged, are similar to the one of a conventional resin cement. METHODS: Human molars (N=168, n=12 per group) and silicabased glass-ceramic specimens (N=168, n=12 per group) were embedded in acrylic resin and randomly divided into 28 groups. The following resin cements were luted according to the manufacturers' instructions: Clearfil SA (CSA), G-Cem (GCM), SmartCem2 (SMC), SpeedCEM (SPC), RelyX Unicem (RXU), RelyX Unicem2 (RXU2) and Panavia21 (control group, PAN). Shear bond strength was measured initially (24h of water storage 37°C) and after aging (24,000 thermal cycles, 5/55°C). The failure types (adhesive, and cohesive) were evaluated after debonding. The shear bond strength values were analyzed using three-way and one-way ANOVA, followed by a post hoc Scheffé and two-sample Student's t-tests. RESULTS: RXU, RXU2 and GCM showed similar after 24h and aged shear bond strength to dentin as the control group. CSA, SMC and SPC exhibited significantly lower values. Before aging, none of the bond strength values to glass-ceramic differed significantly from the other. After thermocycling, GCM showed higher results to glass-ceramic than CSA, SMC, RXU2 and the control group. Analyzing failure types after spontaneous debonding and shear bond test at dentin, solely adhesive failures were found, while at glass-ceramic only cohesive failures occurred. CONCLUSION: Not all self-adhesive resin cements can be a valid alternative to conventional resin cements in order to bond silica-based glass-ceramics to human dentin. Abstract (250 words)Objectives: The aim of the study was to test whether or not the shear bond strengths of six self-adhesive resin cements to dentin and to glass-ceramic, 24hours and long-termaged, are similar to the one of a conventional resin cement. Methods:Human molars (N=168, n=12 per group) and silica-based glass-ceramic specimens (N=168, n=12 per group) were embedded in acrylic resin and randomly divided into 28 groups. The following resin cements were luted according to the manufacturers' instructions: ClearfilRelyX Unicem2(RXU2) and Panavia21(control group, PAN). Shear bond strength was measured initially (24h of water storage 37°C) and after aging (24,000 thermal cycles,5/55°C). The failure types (adhesive, cohesive) were evaluated after debonding.The shear bond strength values were analysed using three-way and one-way ANOVA, followed by a post hoc Scheffé and two-sample Student's t-tests. Results:RXU, RXU2and GCM showed similar after 24hours and aged shear bond strength to dentin as the control group. CSA, SMC and SPC exhibited significantly lower values. Before aging, none of the bond strength values to glass-ceramic differed significantly from the other.After thermocycling, GCM showed higher results to glass-ceramic than CSA, SMC, RXU2 and the control group. Analyzing failure types after spontaneous debonding and shear bond...

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“…This finding is in accordance to the results of other studies [20,30]. Water absorption of different self-adhesive resin cements varies [31].…”

Section: Discussionsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Are self-adhesive resin cements a valid alternative to conventional resin cements? A laboratory study of the long-term bond strength

et al. 2012

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“…In contrast, the universal composite resin cement failed to bond to sandblasted PEEK. One reason for that finding may be the change from hydrophilic to hydrophobic properties during the setting of the cement, which may negatively interfere during the initial wetting and setting phase [7]. Nevertheless, we employed this material as it is frequently used in daily clinical practice and represents one of the most thoroughly invstigated self-adhesive cements in the literature [8].…”

Section: Discussionmentioning

confidence: 99%

Effect of different surface pre-treatments and luting materials on shear bond strength to PEEK

et al. 2010

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OBJECTIVES: To assess the bonding potential of a universal composite resin cement and an adhesive/composite system to differently pre-treated PEEK surfaces. METHODS: One hundred and fifty PEEK disks were embedded in epoxy resin, polished (P4000 grit) and treated as follows (n=30/group): (A) no treatment, (B) acid etching with sulfuric acid (98%) for 1 min, (C) sandblasting for 10s with 50 microm alumina, (D) sandblasting for 10s with 110 microm alumina and (E) silica coating using the Rocatec system (3M ESPE). Polished and sandblasted (50 microm alumina) cp titanium (grade 4) served as a control. Acrylic hollow cylinders were either luted with a universal composite resin cement (RelyX Unicem) or an unfilled resin (Heliobond) and a hybrid composite (Tetric) to the specimens. Bond strength was measured in a shear test and failure modes were assessed. Statistic analysis was performed with one-way ANOVA followed by a post hoc Scheffé test and unpaired t-tests. RESULTS: With the universal composite resin cement, no bond could be established on any PEEK surfaces, except specimens etched with sulfuric acid (19.0+/-3.4MPa). Shear bond strength to titanium was significantly lower (8.7+/-2.8MPa, p<0.05). Applying the adhesive/composite system, shear bond strength values on pre-treated PEEK ranged from 11.5+/-3.2MPa (silica coating) to 18.2+/-5.4MPa (acid etched) with no statistically significant differences (p>0.05). No bond was obtained on the polished surface. SIGNIFICANCE: Bonding to PEEK is possible when using a bonding system. No adherence can be achieved with the tested universal composite resin cement except on an etched surface. The results strongly encourage further research in PEEK application in dentistry. Significance: Bonding to PEEK is possible when using a bonding system. No adherence can be achieved with the tested universal composite resin cement except on an etched surface. The results strongly encourage further research in PEEK application in dentistry.

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“…2,20 The high bond strength results obtained by the resin cement Multilink are in agreement with another studies. 21,22 One reason that may explain the high bond strength results of the cement Multilink is the prior application of a self-etching primer, which was vigorously applied, as used in Panavia F. Another reason is that the self-etching system (Primer A + Primer B) used has an acidic monomer supplied in a separate bottle of water, to prevent premature hydrolysis of the methacrylate. 21 All self-adhesive luting agents evaluated in the present study provided low bond strength values to dentin surfaces with high prevalence of pre-failure specimens.…”

Section: Discussionmentioning

confidence: 99%

Effect of Storage Time on Microtensile Bond Strength of Self-Adhesive and Multi-Step Resin Cements to Dentin

et al. 2016

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The purpose of this study was to evaluate the effects of long-term storage on the microtensile bond strength (µTBS) to dentin of two self-adhesive and three multi-step resin cements. Two self-adhesive cements RelyX U100 (U100) and seT PP (SET), and 3 multi-step resin cements, one using 2-step etch-and-rinse adhesive AllCem (ALC), and two conventional resin cements with self-etching primer Panavia F (PAN) and Multilink (MULT) were used. Human molars were restored (n=5), sectioned and subjected to the μTBS test after 24 h and 6 months. Fractured specimens were examined by stereomicroscope and SEM. The µTBS were analyzed by one-way ANOVA and Tukey test (α=0.05). ANOVA revealed a difference between groups (p<0.0001). All multi-step resin cements ALC, MULT and PAN showed statistically similar bond strength values that were higher than those of the U100 and SET groups. The bond strength value of ALC, MULT and PAN decreases significantly after 6 months. The majority of the failures were adhesive for all the groups. The µTBS produced by the self-adhesive cements were significantly lower than those observed for multi-step luting agents. Regardless of the numbers of steps of resin cements, the storage time reduces µTBS values to dentin only to multi-step luting agents.

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Shear bond strength of resin cements to human dentin

Cited by 98 publications

References 29 publications

Are self-adhesive resin cements a valid alternative to conventional resin cements? A laboratory study of the long-term bond strength

Are self-adhesive resin cements a valid alternative to conventional resin cements? A laboratory study of the long-term bond strength

Effect of different surface pre-treatments and luting materials on shear bond strength to PEEK

Effect of Storage Time on Microtensile Bond Strength of Self-Adhesive and Multi-Step Resin Cements to Dentin

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