Evaluation of Experimental Coating to Improve the Zirconia‐Veneering Ceramic Bond Strength

Matani, Jay; Kheur, Mohit; Jambhekar, Shantanu; Bhargava, Parag; Londhe, Aditya

doi:10.1111/jopr.12176

Cited by 21 publications

(34 citation statements)

References 26 publications

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“…From these results, the surface of the C-NT group was characterized as a sharp, rough surface. Our R a results of the C-NT group are in agreement with those of a previous study [25]. An experimental glass slurry coated onto zirconia surfaces before sintering caused a significant increase in R a because the slurry contents adhered to the surfaces after sintering.…”

Section: Discussionsupporting

confidence: 92%

Influence of Pre-Sintered Zirconia Surface Conditioning on Shear Bond Strength to Resin Cement

Sawada

Spintzyk²,

Schille³

et al. 2016

Materials

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This study analyzed the shear bond strength (SBS) of resin composite on zirconia surface to which a specific conditioner was applied before sintering. After sintering of either conditioner-coated or uncoated specimens, both groups were divided into three subgroups by their respective surface modifications (n = 10 per group): no further treatment; etched with hydrofluoric acid; and sandblasted with 50 µm Al 2 O 3 particles. Surfaces were characterized by measuring different surface roughness parameters (e.g., R a and R max ) and water contact angles. Half of the specimens underwent thermocycling (10,000 cycles, 5-55˝C) after self-adhesive resin cement build-up. The SBSs were measured using a universal testing machine, and the failure modes were analyzed by microscopy. Data were analyzed by nonparametric and parametric tests followed by post-hoc comparisons (α = 0.05). Conditioner-coated specimens increased both surface roughness and hydrophilicity (p < 0.01). In the non-thermocycled condition, sandblasted surfaces showed higher SBSs than other modifications, irrespective of conditioner application (p < 0.05). Adhesive fractures were commonly observed in the specimens. Thermocycling favored debonding and decreased SBSs. However, conditioner-coated specimens upon sandblasting showed the highest SBS (p < 0.05) and mixed fractures were partially observed. The combination of conditioner application before sintering and sandblasting after sintering showed the highest shear bond strength and indicated improvements concerning the failure mode.

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Section: Discussionsupporting

confidence: 92%

Influence of Pre-Sintered Zirconia Surface Conditioning on Shear Bond Strength to Resin Cement

Sawada

Spintzyk²,

Schille³

et al. 2016

Materials

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“…[5,8,10,[20][21][22][23] Dental laser application on zirconia is one of the surface treatment options evaluated previously to improve surface roughness and bond strength between zirconia and veneer ceramic. [8][9][10] The current study evaluated the effect of an industrial laser on zirconia surface. Results show that surface roughness was affected by laser irradiation (Table 1).…”

Section: Discussionmentioning

confidence: 99%

“…[12][13][14] The studies that have evaluated laser application to improve the bond between the zirconia framework and the veneer ceramic have utilized only CO 2 , Nd:YAG, and Er: YAG lasers which are frequently used for dental applications. [8][9][10] But their use to enhance the bond strength between zirconia and the veneer ceramic did not show any significant increase when compared with the sandblasting method, which can be accepted as conventional method for surface roughening; improving the bond strength between zirconia and veneer ceramic can be achieved by increasing the surface roughness. In addition to these dental lasers, ytterbium laser is a quite powerful tool mainly used in the industry.…”

Section: Introductionmentioning

confidence: 90%

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Bond strength of short-pulsed laser-irradiated zirconia to veneer ceramic

Tuncel

Turp

Üşümez

2015

Journal of Adhesion Science and Technology

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Objective: The aim was to evaluate the effect of 1064 nm Yb-doped fiber-based nanosecond pulsed laser on surface roughness and bond strength between veneer ceramic and zirconia. Material and methods: Zirconia discs were divided into three groups: sandblasted (SB), laser irradiated (YL), and control (n = 12). YL group was treated with ytterbium laser with the setting of 85 W/25 kHz. Sandblasting was done using 50 μm Al 2 O 3 particles from a distance of 10 mm for 20 s under 3.5 atm. No surface treatment was applied to the control group. The surface roughness values and SEM images of the groups were obtained. X-ray diffraction analysis was applied to a spare sample of each group to determine the monoclinic phase ratio. The samples were subjected to shear bond strength (SBS) test with a cross-head speed of 1 mm/min after being veneered. The fracture modes were evaluated. Oneway analysis of variance and Tukey's HSD tests were used for statistical analysis. Results: The YL group had higher surface roughness than the control (p ≤ 0.0001) and the SB group (p = 0.007) with a mean value of 2.90 μm. The SEM images of the groups supported this result, but formation of the microcracks was more intense for the YL group. The monoclinic phase ratio was highest for the SB group. However, the differences of SBS between SB and YL groups were not statistically significant. Mostly the combined failure of samples was observed. Conclusions: Ytterbium laser treatment increased the surface roughness of zirconia, but the SBS was not higher than sandblasting. Surface roughness results did not correlate with the SBS results.

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“…In addition, some researchers have suggested that the framework design and thickness of the veneering porcelain must be considered [9,10]. Recently, alternative approaches including coating methods and plasma treatment for zirconia surfaces have been attempted for such studies [11,12]. …”

Section: Introductionmentioning

confidence: 99%

Influence of the Conditioning Method for Pre-Sintered Zirconia on the Shear Bond Strength of Bilayered Porcelain/Zirconia

Spintzyk¹,

Yamaguchi

Sawada³

et al. 2016

Materials

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This study evaluated the bond strength of veneering porcelain with an experimental conditioner-coated zirconia. Pre-sintered Y-TZP specimens (n = 44) were divided in two groups based on conditioning type. After sintering, all sample surfaces were sandblasted and layered with veneering porcelain. Additionally, half of the specimens in each group underwent thermal cycling (10,000 cycles, 5–55 °C), and all shear bond strengths were measured. After testing, the failure mode of each fractured specimen was determined. Differences were tested by parametric and Fisher’s exact tests (α = 0.05). The differences in bond strength were not statistically significant. Adhesive fractures were dominantly observed for the non-thermal cycled specimens. After thermal cycling, the conditioner-coated group showed cohesive and mixed fractures (p = 0.0021), whereas the uncoated group showed more adhesive fractures (p = 0.0021). Conditioning of the pre-sintered Y-TZP did not change the shear bond strength of the veneering porcelain, but did improve the failure mode after thermal cycling.

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Evaluation of Experimental Coating to Improve the Zirconia‐Veneering Ceramic Bond Strength

Abstract: The experimental zirconia surface coating is a simple technique to increase the microroughness of the zirconia surface, and thereby improve the SBS to the veneering ceramic. It results in the least monoclinic content and produces no structural damage to the zirconia substructure.

Cited by 21 publications

References 26 publications

Influence of Pre-Sintered Zirconia Surface Conditioning on Shear Bond Strength to Resin Cement

Influence of Pre-Sintered Zirconia Surface Conditioning on Shear Bond Strength to Resin Cement

Bond strength of short-pulsed laser-irradiated zirconia to veneer ceramic

Influence of the Conditioning Method for Pre-Sintered Zirconia on the Shear Bond Strength of Bilayered Porcelain/Zirconia

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