Effect of glazed and polished surface finishes on the friction coefficient of two low-fusing ceramics

Schuh, Christian; Kinast, Éder Júlio; Mezzomo, Élio; Kapczinski, Myriam Pereira

doi:10.1016/j.prosdent.2004.12.010

Cited by 44 publications

(47 citation statements)

References 38 publications

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“…Water circulation cannot sufficiently reduce heat or stress between surfaces. These conditions might have produced a high coefficient of friction between the surfaces, thus the wear resistance of porcelain was decreased 38) . Subsurface cracks have been found when using high sliding cycles 39) .…”

Section: Discussionmentioning

confidence: 99%

In vitro wear resistance, hardness and elastic modulus of artificial denture teet

et al. 2011

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In this study, the wear resistance, hardness, elastic modulus, and the correlations between them of artificial denture teeth at the sub-enamel layer were examined. Four types of tested artificial denture teeth consisted of 3 conventional acrylic resin teeth (Cosmo HXL, Major Dent, and Yamahachi FX), 1 high cross-linked acrylic resin teeth (Trubyte Bioform IPN), 2 composite resin teeth (SR Orthosit PE, and Yamahachi PX), and 1 porcelain teeth (ACE Teeth). The two-body wear test was performed using a custom made pin on disc apparatus. Volume and weight loss were measured. Hardness and elastic modulus were also assessed by using a nanoindentation system. The results suggested wear resistance varied among the denture tooth materials. Wear resistance of high cross-linked acrylic resin teeth was the lowest. A definite relation between wear resistance and mechanical properties of materials could not be found in this study.

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Section: Discussionmentioning

confidence: 99%

In vitro wear resistance, hardness and elastic modulus of artificial denture teet

et al. 2011

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“…1,2 Low-fusing porcelains in fixed dental prostheses (FDP) exhibit desirable properties such as excellent esthetics, 3 high biocompatibility, 4 high wear resistance, 5,6 and high chemical stability. 7 However, their brittle behavior can jeopardize long-term durability of FDP, which can result in catastrophic failures under physiological or pathological loading during oral function.…”

Section: Discussionmentioning

confidence: 99%

The effect of slurry preparation methods on biaxial flexural strength of dental porcelain

Peláez-Vargas¹,

Dussán²,

Restrepo-Tamayo³

et al. 2011

The Journal of Prosthetic Dentistry

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Statement of problem. One-step and incremental mixing procedures are currently used to produce dental ceramic pastes. In the ceramic industry, high quality is obtained using one-step mixing, but in dentistry, the best method has not been yet determined.Purpose. The purpose of this study is to evaluate the effects of 2 mixing techniques on the biaxial flexural strength and microstructure of dental porcelain. Material and methods.Feldspathic porcelain discs (2 x 15 mm in diameter) were produced and divided according to the ceramic paste preparation method, powder-liquid incremental mixing group (n=50) or one-step mixing, as a control group (n=50). Specimens were tested for biaxial flexural strength and characterized using porosimetry, relative humidity, SEM/EDS, XRD, and F T-IR analyses. Statistical analysis was conducted using Weibull statistics. The Weibull modulus, characteristic strength and relative humidity were compared between groups, using Student's t-test and Mann-Whitney U test (α=.05).Results. The powder-liquid incremental mixing group showed significantly higher values (SD) of Weibull modulus (6.74 (0.70), P<.001) and characteristic strength (79.87 (2.01) MPa, P<.001) when compared to the one-step mixing group (4.94 (0.94) and 75.95 (2.61) MPa). Significantly lower mean (SD) relative humidity values (P=.009) were found for powder-liquid incremental mixing group (20% (0.5%)) compared to one-step mixing group (22% (1%)). XRD spectra showed that the one-step mixing group produced higher amounts of the amorphous phase. Conclusions.Specimens produced by the incremental mixing technique showed higher biaxial flexural strength than one-step mixing. (J Prosthet Dent 2011;105:308-314)

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“…Despite their overall excellence, these ceramics can cause extensive wear of the opposing tooth structures (2,3). A new restoration often opposes existing multiple restorative materials or may occlude with an antagonistic dentition that consists of a mixture of different restorative materials.…”

Section: Introductionmentioning

confidence: 99%

The ball-on-disk cyclic wear of CAD/CAM machinable dental composite and ceramic materials

et al. 2017

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The purpose of this study was to investigate the wear volume and the principal strain of machinable dental composite and ceramics in simulated mastication. A ball-on-disk wear test was performed for 3,000 cycles in water, using nine ball/disk combinations of three commercial CAD/ CAM materials: feldspathic, lithium disilicate glass ceramics, and a highly loaded composite material (n = 7 for each combination). The wear volume was optically measured using a digital scanner and analyzed for statistical differences based on the materials (α = 0.05). We used non-linear finite element analysis to calculate the principal strain. The wear volume of the ball was significantly larger than that of the disk when hardness and fracture toughness of the former was lower than that of the latter and vice versa (P < 0.05). The lithium disilicate glass ceramic constantly showed lower wear volume than the opposing antagonist. Except for the same material pairs of feldspathic and composite, the ball or disk specimen that showed a larger wear in the occluding pair coincided with the one with higher maximum strain. It was not possible to predict the magnitude of wear, whereas the result suggested a strong association between the maximum strain and wear volume of the ceramic surface.

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Effect of glazed and polished surface finishes on the friction coefficient of two low-fusing ceramics

Cited by 44 publications

References 38 publications

In vitro wear resistance, hardness and elastic modulus of artificial denture teet

In vitro wear resistance, hardness and elastic modulus of artificial denture teet

The effect of slurry preparation methods on biaxial flexural strength of dental porcelain

The ball-on-disk cyclic wear of CAD/CAM machinable dental composite and ceramic materials

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