In vitro shear bond strength of cementing agents to fixed prosthodontic restorative materials

Piwowarczyk, Andree; Lauer, Hans–Christoph; Sorensen, John A.

doi:10.1016/j.prosdent.2004.06.027

Cited by 201 publications

(211 citation statements)

References 17 publications

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“…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]. Several studies indicated that RelyX Unicem exhibits similar bonding performance as various other prosthodontic resin cement materials and good marginal integrity [9][10][11]. Retention forces of noble alloy castings cemented on titanium abutments with different cements were investigated [12]: RelyX Unicem was comparable to the retention achieved using polycarboxylate cement, and significantly higher in comparison to retention following the cementation with zinc oxide, zinc phosphate, and glass-ionomer cements.…”

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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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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“…Subsequently, the negatively charged groups of the monomer bind to Ca2+ions of the tooth and in combination with the alkaline part of the fillers a neutralization reaction follows [13]. Several in vitro and clinical studies showed promising results of RelyX Unicem with respect to bond strength [14][15][16][17]. The chemical reaction of most of the other self-adhesive cements have not been…”

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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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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“…Several studies indicated that RelyX Unicem exhibited similar bonding performance to various prosthodontic materials like other resin cements [21][22][23]. Furthermore, good marginal integrity of reconstructions luted with RelyX Unicem was shown in microscopic investigations [24,25].…”

Section: Introductionmentioning

confidence: 99%

Shear bond strength of resin cements to human dentin

et al. 2008

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In vitro shear bond strength of cementing agents to fixed prosthodontic restorative materials

Cited by 201 publications

References 17 publications

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

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

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

Shear bond strength of resin cements to human dentin

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