Is there a potential for durable adhesion to zirconia restorations? A systematic review (original) (raw)
Related papers
Adhesion to Zirconia Used for Dental Restorations: A Systematic Review and Meta-Analysis.
Purpose: Currently, no consensus exists regarding the best adhesion protocol for zirconia used in dentistry; this is important particularly for restorations where mechanical retention is deficient. This systematic review analyzed the adhesion potential of resin-based and glass-ionomer luting cements to zirconia and aimed to highlight the possible dominant factors affecting the bond strength results to this substrate. Descriptive statistics were performed and the frequencies of the studied parameters, means, standard deviations, confidence intervals (95% CI; uncorrected and corrected), median values, and interquartile ranges (IQR) were calculated for the bond strength data reported for different factor levels: surface conditioning methods (control, physicochemical, physical, chemical), cements (bis-GMA-, MDP-, and 4-META-based resin cements, self-adhesive cements, glass ionomer), aging with and without thermocycling (TC), and test methods (macroshear, microshear, macrotensile, and microtensile).
SciDoc Publishers, 2021
The aim of this study to the leverage of Ivoclean on saliva-contaminated zirconia in comparison to air abrasion regarding of resin bonding strength. Materials and Methods: A total of 30 partially-stabilized translucent zirconia disk-specimens with a thickness of 2 mm and a diameter of 4 mm were turned out, the specimens were classified into three experimental groups according to the surfaces cleaning methods: "CO" 1st group no contaminated (control group), "AB" 2nd group immersion in saliva then rinsed with water spray for 15s, air drying for 15s with compressed air free oil afterwards alumina blasting with 50 mm particles of Al2O3 at 0.3 MPa for 15 seconds at a distance of 10 mm, using a blasting machine, "IC" 3th group : immersion in saliva for 1 min then water rinsing and air drying protocol, Ivoclean was applied for 20 s without rubbing motion, then water rinsing and air drying protocol was applied. The pretreated specimens were bonded using one self-adhesive resin cement(Multilink N) , and shear bond strength (SBS) were examined using a universal testing machine at a crosshead speed of 0.5 kg/min. Results: The data so obtained was tabulated and statistically analyzed. The results showed after analyzing no significantly difference between (IC) and (AB) (P>0.05), and no significantly difference between (IC) and (CO) in improving of (SBS) (P<0.05). Conclusion: Within the limitations of this in-vitro study, it can be concluded that Ivoclean is effective for removing saliva contaminants, and can improve the resin bond strength to saliva-contaminated zirconia surfaces.
The Zirconia Restoration Properties: A Versatile Restorative Material
Dentistry, 2014
Metal ceramic restorations were considered the gold standard as reliable materials. Increasing demand for esthetics supported the commercialization of new metal free restorations. A growing demand is rising for zirconia prostheses. Peer-reviewed articles published till September 2013 was identified through a Medline. Emphasizing was made on zirconia properties and applications. Zirconia materials are able to withstand posterior physiologic loads. Although zirconia cores are considered as reliable materials, these restorations are not problem free.
The Journal of Prosthetic Dentistry
Zirconia-based ceramics have gained popularity as a framework or anatomic contour material because of the demand for esthetics. 1 Zirconia has excellent biocompatibility and strength, with reasonable esthetics, and is produced by computer-aided design and computer-aided manufacturing (CAD-CAM) technologies. 2-5 Although an optimal cementation protocol for zirconia ceramic restorations has yet to be established, airborne-particle abrasion with 50-mm aluminum oxide (Al 2 O 3) as a surface conditioning procedure and cementation with an adhesive system containing phosphate ester monomers such as 10-methacryloyloxydecyl dihydrogen phosphate (10-MDP) has been shown to result in stable, high-strength bonding. 6,7
Evaluation of repair bond strength with different methods for zirconia restorations
Bulletin of the National Research Centre
Background The aim of the study is to assess the bonding of two repair methods for zirconia. Null hypothesis Repair of zirconia with Cojet (3M Cojet sand, 68,411) and clearfil (clearfil REPAIR Kuraray Japan) has the same effect on the bond strength of zirconia restorations. Zirconia blocks were sliced before sintering into 28 samples (inCorisZI mono L), surface treated with two repair methods (Cojet and clearfil) then bonded to composite. Storage and thermocycling was done then loaded under shear until failure. Shear bond strength was collected and statistically analyzed. Graph pad Instat (Graph Pad, Inc.) software for windows was used for analyzing results. Results It was found that COJ surface treatment recorded statistically non-significant higher shear bond strength mean value (8.45 ± 0.70 Mpa) than CLE surface treatment (7.67 ± 2.55 Mpa) as indicated by paired t-test. Conclusion It was concluded that bond strength between composite resin and inCoris ZI mono L is the same in res...
The Journal of Prosthetic Dentistry, 2014
Statement of problem. The retention of cement-retained implant-supported restorations can be affected by the height of the abutments. Purpose. The purpose of this study was to evaluate the effects of the surface treatment on the retention of implant-supported zirconia restorations over short abutments. Material and methods. Eighty solid abutments reduced to 3 mm in height and their corresponding fixture replicas were embedded vertically in autopolymerizing acrylic resin blocks. Eighty zirconia copings (Cercon) with an occlusal loop were fabricated and divided into 2 groups (n¼40). One group was airborne-particle abraded with 110 mm aluminium oxide and the other group was treated with silica coating (Rocatec System). Each group was then divided into 4 subgroups (n¼10). The subgroups received either no treatment (control) or were treated with silane (Clearfil Porcelain Bond ActivatorþSE Primer), acid etching followed by silane, or ceramic primer (Clearfil). All copings were luted with a self-adhesive luting agent (Clearfil SA). After 1 week of conditioning in artificial saliva and thermal cycling (5000 cycles, 5 C-55 C), the removal force of the copings were tested with a universal testing machine at a 5 mm/min crosshead speed. The dislodgment force and failure mode were recorded. Two-way ANOVA and the Tukey honestly significant difference and the Fisher exact tests were used for data analysis (a¼.05). Results. The highest retentive values were obtained for airborne-particle abrasion-ceramic primer (228.84 N) and silica coating-ceramic primer (230.37 N), which were not significantly different from silica coating alone (216.26 N; P¼.95) or a combination of airborne-particle abrasion followed by silanation (211.67 N; P¼.87). The failure mode was primarily adhesive and cement principally remained on the copings. Conclusions. Within the limitations of this study, ceramic primer that contains adhesive phosphate monomer significantly improved the retention of zirconia ceramic restorations. Silicoating as a mechanical treatment provided greater retention for zirconia copings than airborne-particle abrasion when a resin-luting agent was used.
Objective: Evaluate the adhesive behavior of conventional and high-translucent zirconia after surface conditioning and hydrothermal aging. Materials and Methods: Conventional (ZrC) and high-translucent zirconia (ZrT) specimens were divided into six groups: without surface treatment (ZrC and ZrT), airborne particle abrasion with 50-μm Al 2 O 3 sized particles (ZrC-AO and ZrT-AO), and tribochemical treatment with 30-μm silica modified Al 2 O 3 sized particles (ZrC-T and ZrT-T). Zirconia specimens were treated using an MDP-containing universal adhesive and bonded to two resins blocks with an adhesive luting cement. Microbar specimens with cross-sectioned areas of 1 mm 2 were achieved. Half of the microbars were subjected to hydrothermal aging. Bond strength was evaluated by microtensile bond strength test and statistically evaluated by the Weibull analysis. Results: Roughness of the ZrC-AO and ZrT-AO groups were statistically higher. Bond strength analysis revealed higher bond strength for ZrC-AO and ZrC-T groups compared to ZrT-AO and ZrT-T, respectively. Mixed failure was the most frequent for the mechanically treated groups, while no cohesive failures were obtained. Conclusion: Lower values of bond strength were obtained for the mechanically treated high-translucent zirconia groups when compared to their conventional zirco-nia counterparts. Mechanical surface treatment significantly improved the bond strength to conventional and high-translucent zirconia. Clinical Significance: Mechanical surface treatment (air-borne particle abrasion or tri-bochemical treatment) associated with the use of universal adhesives containing MDP could provide a durable bonding to conventional and high-translucent zirconia. K E Y W O R D S adhesive cementation, high-translucent zirconia, microtensile bond strength 1 | INTRODUCTION Due to its superior mechanical properties, yttria-stabilized tetragonal zirconia polycrystal (3Y-TZP) is one of the most suitable ceramic materials for use as prosthetic frameworks and implant abutments. 1,2 Although 3Y-TZP (first generation zirconia) is still the most used by clinicians, the fact that it is white and opaque greatly reduces its clinical indications. 3 In order to minimize such optical limitations,