Surface roughness and EDS characterization of a Y-TZP dental ceramic treated with the CoJet™ Sand

Lorente, Maria Cattani; Scherrer, Susanne S.; Richard, J.; Demellayer, René; Amez-Droz, Michel; Wiskott, H. W. Anselm

doi:10.1016/j.dental.2010.06.005

Cited by 49 publications

(28 citation statements)

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“…Although the measured roughness (Ra value) increased after CoJet sandblasting, the amount of abraded zirconia material of approximately 3 µm [52] provided a more homogeneous surface, rounding off machining grooves or eliminating these as illustrated in Fig. 14.…”

Section: Discussionmentioning

confidence: 99%

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Fatigue behavior in water of Y-TZP zirconia ceramics after abrasion with 30μm silica-coated alumina particles

et al. 2011

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Objective The use of a 30 µm alumina–silica coated particle sand (CoJet™ Sand, 3M Espe), has shown to enhance the adhesion of resin cements to Y-TZP. The question is whether or not sandblasting 30 µm particles does negatively affect the fatigue limit (S–N curves) and the cumulative survival of Y-TZP ceramics. Method Four zirconia materials tested were: Zeno (ZW) (Wieland), Everest ZS (KV) (KaVo), Lava white (LV) and Lava colored (LVB) (3M Espe). Fatigue testing (S–N) was performed on 66 bar of 3 mm × 5 mm × 40 mm with beveled edges for each zirconia material provided by the manufacturers. One half of the specimens were CoJet sandblasted in the middle of the tensile side on a surface of 5 mm × 6 mm. Cyclic fatigue (N = 30/group) (sinusoidal loading/unloading at 10 Hz between 10% and 100% load) was performed in 3-point-bending in a water tank. Stress levels were lowered from the initial static value (average of N = 3) until surviving 1 million cycles. Fatigue limits were determined from trend lines. Kaplan–Meier survival analysis was performed to determine the failure stress at the median percentile survival level for 1 million of cycles before and after sandblasting. The statistical analyses used the log-rank test. Characterization of the critical flaw was performed by SEM for the majority of the failed specimens. Results The fatigue limits “as received” (ctr) were: LV = 720 MPa, LVB = 600 MPa, KV = 560 MPa, ZW = 470 MPa. The fatigue limits “after CoJet sandblasting” were: LV = 840 MPa, LVB = 788 MPa, KV = 645 MPa, ZW = 540 MPa. The increase in fatigue limit after sandblasting was 15% for Zeno (ZW) and Everest (KV), 17% for Lava (LV) and 31% for Lava colored (LVB). The KM median survival stresses in MPa were: ZW(ctr) = 549 (543–555), ZW(s) = 587 (545–629), KV(ctr) = 593 (579–607), KV(s) = 676 (655–697), LVB(ctr) = 635 (578–692), LVB(s) = 809 (787–831), LV(ctr) = 743 (729–757), LV(s) = 908 (840–976). Log-rank tests were significantly different (p < 0.001) for all sandblasted groups vs. the “as received” except for Zeno (Wieland) (p = 0.295). Failures started from both intrinsic and machined flaws. Significance 30 µm particle sandblasting did significantly improve the fatigue behavior of three out of four Y-TZP ceramic materials and can therefore be recommended for adhesive cementation procedures. This study was supported in part by grants from the Swiss Society for Reconstructive Dentistry (SSRD) and 3M Espe.

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Section: Discussionmentioning

confidence: 99%

“…The image on the right represents a 3D reconstruction of a Zeno Y-TZP (Wieland) surface topography showing the vertical loss after sandblasting (blue surface) compared to the originally ground surface (red). [52]…”

Section: Discussionmentioning

confidence: 99%

Fatigue behavior in water of Y-TZP zirconia ceramics after abrasion with 30μm silica-coated alumina particles

et al. 2011

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“…6 One other method known as Er:YAG laser ablation uses laser irradiation that creates a rough zirconia surface [17,18]. Yet, studies have shown that laser irradiation is not as effective as air-borne particle abrasion methods in improving adhesion of resin cements to zirconia [21]. Other coating methods using micropearls of low fusing ceramic or vapor deposition of silicon tetrachloride (SiCl 4 ) have shown worthy results of adhesion [22] but again glass deposition was found critical to interfere with the internal adaptation of the reconstruction [23][24].…”

Section: Surface Conditioning Methods For Zirconiamentioning

confidence: 99%

Adhesion to Zirconium Dioxide Used for Dental Reconstructions: Surface Conditioning Concepts, Challenges, and Future Prospects

Özcan

Volpato

2015

Curr Oral Health Rep

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Yttrium-stabilized zirconium dioxide, a commonly used material in conjunction with CAD/CAM technologies in dentistry, is an oxide ceramic that does not comprise silicon dioxide (SiO 2 ) phase in its microstructure. Since it is challenging to create durable adhesion between resin cements and this kind of nonetchable ceramic, efforts have been made to develop innovative surface conditioning methods over the years.While some chemical methods based on using adhesion promoters only did not perform stable adhesion, others utilizing physico-chemical conditioning methods provided better adhesion where the latter is also being questioned on impairing mechanical stability of zirconium dioxide (ZrO 2 ) due to t→m phase transformation.This review will highlight current surface conditioning concepts to achieve best adhesion to zirconium dioxide, challenges related to conditioning methods or resin-based luting cements, and contemplate on future prospects.

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“…In Y-TZP surface treatment for a clinical purpose, SC and SB protocols have been applied easily at chairside and have a good price-performance ratio; however, they can cause subsurface damage [46,47] and some tetragonal to monoclinic phase transformation can occur when alumina particle is used [33,48]. Based on their initial results, Cattani Lorente et al reported that the impact-induced surface flaws caused by Cojet particles had no effect on strength, observing that mean survival load at failure following cyclic fatigue was similar before and after blasting [49].…”

Section: [Figura 2: Imagens Da Rugosidade De Superfície Da Cerâmica Ymentioning

confidence: 99%

Effect of airborne particle abrasion protocols on surface topography of Y-TZP ceramic

et al. 2012

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This study aimed to evaluate Y-TZP surface after different airborne particle abrasion protocols. Seventy-six Y-TZP ceramic blocks (5×4×4) mm 3 were sintered and polished. Specimens were randomly divided into 19 groups (n=4) according to control group and 3 factors: a) protocol duration (2 and 4 s); b) particle size (30 µm, alumina coated silica particle; 45 µm, alumina particle; and 145 µm, alumina particle) and; c) pressure (1.5, 2.5 and 4.5 bar). Airborne particle abrasion was performed following a strict protocol. For qualitative and quantitative results, topography surfaces were analyzed in a digital optical profilometer (Interference Microscopic), using different roughness parameters (Ra, Rq, Rz, X-crossing, Mr1, Mr2 and Sdr) and 3D images. Surface roughness also was analyzed following the primer and silane applications on Y-TZP surfaces. One-way ANOVA revealed that treatments (application period, particle size and pressure of particle blasting) provided significant difference for all roughness parameters. The Tukey test determined that the significant differences between groups were different among roughness parameters. In qualitative analysis, the bonding agent application reduced roughness, filing the valleys in the surface. The protocols performed in this study verified that application period, particle size and pressure influenced the topographic pattern and amplitude of roughness.

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Surface roughness and EDS characterization of a Y-TZP dental ceramic treated with the CoJet™ Sand

Cited by 49 publications

References 54 publications

Fatigue behavior in water of Y-TZP zirconia ceramics after abrasion with 30μm silica-coated alumina particles

Fatigue behavior in water of Y-TZP zirconia ceramics after abrasion with 30μm silica-coated alumina particles

Adhesion to Zirconium Dioxide Used for Dental Reconstructions: Surface Conditioning Concepts, Challenges, and Future Prospects

Effect of airborne particle abrasion protocols on surface topography of Y-TZP ceramic

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