Microtensile bond strength and scanning electron microscopic evaluation of zirconia bonded to dentin using two self-adhesive resin cements; effect of airborne abrasion and aging

Gamal, Reem; Gomaa, Yasser A.; Abdellatif, Mostafa A.

doi:10.1016/j.fdj.2017.07.002

Cited by 12 publications

(10 citation statements)

References 26 publications

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“…Conversely, the application of mild acidic agents, such as 25% poly-acrylic acid (same dentin conditioner used for glass-ionomer cements), might remove the superficially loose bound fraction of the smear layer, thus improving adhesion (20) .…”

Section: Discussionmentioning

confidence: 99%

Micro-shear Bond strength of Novel MDP Calcium- Fluoride Releasing Self-Adhesive Resin Cement after thermocycling

Mahrous

Radwan

Kamel

2018

Egyptian Dental Journal

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Purpose:The purpose of the present study was to investigate the micro-shear bond strength and failure mode of novel "MDP calcium-fluoride releasing" self-adhesive resin cement (TheraCem) with tooth structure (enamel& dentin) and yttrium stabilized zirconia after thermocycling and comparing the results with universal "non-containing MDP" self-adhesive resin cement (Relay X Unicem as a control) Materials and Methods: Enamel and dentin specimens (20 discs each) were obtained by using diamond saw (IsoMet 4000 linear Precision saw, Buehler, USA) with copious water coolant. Twenty zirconia plates were obtained from IPS e.max ZirCad blocks (Ivoclar Vivadent, Schaan, Liechtenstein) and sintered in an inFire HTC speed high-temperature furnace (Sirona Dental System GmbH, Germany). Micro resin cylinders were created on the bonded surface and filled with the tested cements (n= 10 /substrate) group A (control) using non-containing MDP selfadhesive cement Relay X Unicem (3M ESPE) while group B (tested cement) using MDP calciumfluoride releasing self-Adhesive resin cement TheraCem (BISCO, Schaumburg, Illinois, USA). Cements were left to self-cure for 5 minutes. All the specimens were thermocycled for 5,000 cycles (Thermocycler 1100 SD Mechatronik, GmbH). Micro-shear bond strength was measured using universal testing machine and debonded surfaces were examined for failure mode analysis with all morphological and ultrastructure changes using Scanning Electron Microscope (Quanta 250 Field Emission Gun, Netherlands) attached with EDX Unit (Energy Dispersive X-ray Analyses). The results were statistically analysed.Results: TheraCem (tested cement) had a slightly higher (mean±SD) µ-SBS (Mpa) value than RelyX (control) (18.96±4.36, 12.18±3.13; respectively) (P=0.177). Within enamel, TheraCem (6.46±1.37) had a significantly higher (mean±SD) µ-SBS (Mpa) value than RelyX (3.04±0.99) (P=0.002). Similarly, TheraCem in dentine (10.67±1.27) had a significantly higher (mean±SD) than RelyX (6.46±1.74) (P=0.014). As for zirconia, TheraCem (39.76±1.18) had a significantly higher (mean±SD) µ-SBS (Mpa) than RelyX (27.04±1.92) (P<0.001) (822)

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Section: Discussionmentioning

confidence: 99%

Micro-shear Bond strength of Novel MDP Calcium- Fluoride Releasing Self-Adhesive Resin Cement after thermocycling

Mahrous

Radwan

Kamel

2018

Egyptian Dental Journal

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“…Cohesive and mixed failure patterns are preferred clinically over adhesive failure patterns as they are usually associated with higher bond strength values than adhesive failure patterns. [35,36] Limitations of this study could be that corrosive components of the oral environment plus biomechanical and chemical stresses could not be replicated in this invitro study. Therefore, further long-term controlled clinical studies should be conducted to support or reject the results of this invitro study.…”

Section: Discussionmentioning

confidence: 99%

Bond Strength of Zirconia Ceramics to Dentin Using Two Resin Cements: Influence of Dentin Conditioning

El-Khbeer,

Ghorab,

Attia

2023

Preprint

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Background Dentin adhesion has difficult challenge compared to enamel adhesion. The purpose of the current study was to assess the impact of different dentin conditioning methods and two different resin cements on bond strength of zirconia ceramics to dentin. Methods A total of 64 zirconia discs were fabricated using CAD/CAM technology according to the desired dimensions (8mm diameter ×3mm thickness). A total of 64molars mounted in plastic rings with acrylic resin were prepared by exposing flat coronal dentin surfaces by removing the occlusal enamel and superficial dentin. The prepared molars were divided into 4 main groups (n = 16) according to dentin surface treatment; Dentin left as cutted, treated with EDTA, treated with Polyacrylic Acid (PAA), treated with self-etch adhesive. Each main group was subdivided into 2 subgroups (n = 8) according to luting cement used. One of the subgroups, zirconia discs were bonded to conditioned dentin surface using adhesive resin cement (VITA ADIVA® F-CEM). The other subgroup was bonded using self-adhesive resin cement (Calibra®Universal). After bonding, all specimens were stored in water bath at 37⁰C for 6 months followed by 10.000 thermal cycles. After artificial aging, all bonded specimens underwent shear bond strength testing using universal testing machine. The data was parametric and normally distributed. Two-way ANOVA was used to test significant difference in shear stress between cements and between surface treatments followed by post hoc Tukey test for correction of p value resulted from multiple comparisons. P is significant if < 0.05 at confidence interval 95%. Results There was a significant difference in shear bond strength between surface treatments. The highest shear bond strength was reported with Self-etch adhesive, followed by PAA, then EDTA surface treatments, and the lowest shear bond strength was reported with as cutted dentin. Also,There was a significant difference between each two surface treatments except between PAA and EDTA for adhesive resin cement group. Conclusion Define dentin surface treatment with self etch adhesive is recommended before bonding zirconia restoration overall the conditioning materials, followed by PAA and EDTA. Specially with self-adhesive resin cement (Calibra universal cement).

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“…This in vitro study aimed to evaluate the effect of two different polymer-based CAD/CAM materials, their different surface pre-treatments, and use of different resin cements on the µTBS of adhesively bonded CAD/ CAM onlays to dentin. The µTBS test was chosen as it allows a more uniform and homogeneous stress distribution compared to that of the conventional shear test, and it enables recognition of the weakest part of the adhesive complex based on the location of the failure 13,18) . Regarding the effects of different CAD/CAM materials on the µTBS, significant differences between LVU and CS were found (Table 2); thus, this study's first null hypothesis was rejected.…”

Section: Discussionmentioning

confidence: 99%

Microtensile bond strengths of adhesively bonded polymer-based CAD/CAM materials to dentin

Çapa

Say

Celebi

et al. 2019

Dental Materials Journal

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This in vitro study aimed to evaluate the effect of two different polymer-based CAD/CAM materials; resin-nano ceramic (Lava Ultimate [LVU]) and composite (CERASMART [CS]), their different surface pre-treatments, and use of different resin cements on the µTBS of adhesively bonded CAD/CAM onlays to dentin. CAD/CAM materials were cut into slabs and divided into five groups according to the surface pre-treatments applied: Silane Primer, OptiBond XTR adhesive, Silane Primer+OptiBond XTR adhesive, Single Bond Universal (SBU), and RelyX Ceramic Primer+SBU. The LVU and CS specimens were bonded to the mid-coronal dentin of 50 non-carious human molars using NX3 resin cement with OptiBond XTR or RelyX Ultimate with SBU. µTBS was evaluated after 5,000 thermocycling and analysed with three-way-ANOVA and post-hoc Tukey's tests (p<0.05). The µTBS was significantly influenced by the type of CAD/CAM material (p<0.0001) surface pre-treatments (p<0.05) and resin cements (p<0.05). Regardless of the pre-treatments and resin cements, bonding of the composite CAD/CAM material to dentin was higher than the resin nano-ceramic material.

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Microtensile bond strength and scanning electron microscopic evaluation of zirconia bonded to dentin using two self-adhesive resin cements; effect of airborne abrasion and aging

Cited by 12 publications

References 26 publications

Micro-shear Bond strength of Novel MDP Calcium- Fluoride Releasing Self-Adhesive Resin Cement after thermocycling

Micro-shear Bond strength of Novel MDP Calcium- Fluoride Releasing Self-Adhesive Resin Cement after thermocycling

Bond Strength of Zirconia Ceramics to Dentin Using Two Resin Cements: Influence of Dentin Conditioning

Microtensile bond strengths of adhesively bonded polymer-based CAD/CAM materials to dentin

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