Shear bond strength tests of zirconia veneering ceramics after chipping repair

Craciunescu, Emanuela Lidia; Sinescu, Cosmin; Negruțiu, Meda Lavinia; Pop, Daniela; Lauer, Hans–Christoph; Romînu, Mihai; Huţiu, Gheorghe; Bunoiu, Mădălin; Duma, Virgil-Florin; Antoniac, Iulian Vasile

doi:10.1080/01694243.2015.1117304

Cited by 18 publications

(12 citation statements)

References 21 publications

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“…Chemical bonding can be induced by various kinds of liner treatments and selective infiltration etching (SIE) [ 15 , 20 , 21 , 22 ]. Also, the effects of these surface treatments on bond and fracture strengths between zirconia and veneering ceramic have been identified by various mechanical tests, such as shear bond test, microtensile bond strength test, 3 or 4-point bending test, progressive or cyclic load fracture test, and indentation test [ 23 , 24 , 25 , 26 , 27 , 28 , 29 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Lithium Disilicate Reinforced Liner Treatment on Bond and Fracture Strengths of Bilayered Zirconia All-Ceramic Crown

et al. 2018

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This study was performed to evaluate the effect of a lithium-disilicate spray-liner application on both the bond strength between zirconia cores and heat-pressed lithium-disilicate glass-ceramic veneers, and the fracture strength of all-ceramic zirconia crowns. A lithium-disilicate reinforced liner was applied on the surface of a zirconia core and lithium-disilicate glass-ceramic was veneered on zirconia through heat press forming. Microtensile and crown fracture tests were conducted in order to evaluate, respectively, the bonding strength between the zirconia cores and heat pressed lithium-disilicate glass-ceramic veneers, and the fracture strength of bilayered zirconia all-ceramic crowns. The role of lithium-disilicate spray-liner at the interface between zirconia and lithium-disilicate glass-ceramic veneers was investigated through surface and cross-sectional analyses. We confirmed that both the mean bonding strength between the zirconia ceramics and lithium-disilicate glass-ceramic veneers and the fracture strength of the liner-treated groups were significantly higher than those of the untreated groups, which resulted, on the one hand, from the chemical bonding at the interface of the zirconia and lithium-disilicate liner, and, on the other, from the existence of a microgap in the group not treated with liner.

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Section: Introductionmentioning

confidence: 99%

Effect of Lithium Disilicate Reinforced Liner Treatment on Bond and Fracture Strengths of Bilayered Zirconia All-Ceramic Crown

et al. 2018

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“…[1,2] The clinical success of ceramic restorations depends on its mechanical properties and the cementation procedure, whereas a durable and stable bond between ceramics and luting agents is fundamental for the long-term performance of the indirect ceramic restorations. [3][4][5] However, the bond strength of zirconia to resin cements is not optimal yet, [3] as the zirconia presents a lack of the glass phase and the hydrofluoridric acid CONTACT rayssa ferreira Zanatta rayssa.zanatta@fosjc.unesp.br etching does not work on it. [6] Therefore, alternative methods for surface treatments of zirconia are necessary, and usually consist of achieving a chemical bond between zirconia and the resin cement, and improving the micromechanical retention.…”

Section: Introductionmentioning

confidence: 99%

Effects of different surface treatments of zirconia on the bond strength of self-adhesive resinous cement

Zanatta

Esper

Pucci

et al. 2016

Journal of Adhesion Science and Technology

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Purpose: The aim of this study was to evaluate the effects of different zirconia surface treatments on the bond strength of two self-adhesive resinous cements (SARC). Methods: Two hundred and eight cylindrical specimens were obtained from Y-TZP zirconia (half with diameter 3.2 mm and half with 4.8 mm). After sintering and polishing, specimens were divided into four groups (n = 26), according to surface treatment: Control (no treatment); Sandblasting (Al 2 O 3 particles); Rocatec (Al 2 O 3 particles, tribochemical silica coating and silane application); Laser (Nd: YAG laser: 20 Hz, 100 mJ, 0.2 J/cm²). The surface roughness (Ra) was evaluated after the surface treatments, and the groups were divided into two subgroups (n = 13), according to the SARC tested: RelyX U200 and Bifix SE. The 2.2-mm cylinders were bonded to 4.8-mm cylinders and stressed until failure under shear using a universal testing machine. Bond strength and Ra were analyzed using ANOVA, and Tukey's test (α = 0.05). Results: Surface treatment was significant (p < 0.0001), but cement type (p = 0.73) was not. Related to roughness, significant differences were found for the treatment type (p < 0.0001), with laser being the treatment with higher Ra values. Conclusions: Nd:YAG laser produced a rougher surface and a higher bond strength compared with sandblasting, silicatization, and control groups.

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“…Their technology is mature, and advanced materials are used in such constructs [2][3][4]. However, fractures of the metal ceramic prostheses may occur occasionally [4,5]. Chippings of prosthetic constructs are hard to fix, especially when they are already cemented in the oral cavity.…”

Section: Introductionmentioning

confidence: 99%

Effects of Temperature Variations during Sintering of Metal Ceramic Tooth Prostheses Investigated Non-Destructively with Optical Coherence Tomography

et al. 2017

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Calibration loss of ovens used in sintering metal ceramic prostheses leads to stress and cracks in the material of the prostheses fabricated, and ultimately to failure of the dental treatment. Periodic calibration may not be sufficient to prevent such consequences. Evaluation methods based on firing supplemental control samples are subjective, time-consuming, and rely entirely on the technician's skills. The aim of this study was to propose an alternative procedure for such evaluations. Fifty prostheses were sintered in a ceramic oven at a temperature lower, equal to or larger than the temperature prescribed by the manufacturer. A non-destructive imaging method, swept source (SS) optical coherence tomography (OCT) was used to evaluate comparatively the internal structure of prostheses so fabricated. A quantitative assessment procedure is proposed, based on en-face OCT images acquired at similar depths inside the samples. Differences in granulation and reflectivity depending on the oven temperature are used to establish rules-of-thumb on judging the correct calibration of the oven. OCT evaluations made on a regular basis allow an easy and objective monitoring of correct settings in the sintering process. This method can serve rapid identification of the need to recalibrate the oven and avoid producing prostheses with defects.

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Shear bond strength tests of zirconia veneering ceramics after chipping repair

Cited by 18 publications

References 21 publications

Effect of Lithium Disilicate Reinforced Liner Treatment on Bond and Fracture Strengths of Bilayered Zirconia All-Ceramic Crown

Effect of Lithium Disilicate Reinforced Liner Treatment on Bond and Fracture Strengths of Bilayered Zirconia All-Ceramic Crown

Effects of different surface treatments of zirconia on the bond strength of self-adhesive resinous cement

Effects of Temperature Variations during Sintering of Metal Ceramic Tooth Prostheses Investigated Non-Destructively with Optical Coherence Tomography

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