Comparison of mechanical properties of three machinable ceramics with an experimental fluorophlogopite glass ceramic

Leung, Brian T.W.; Tsoi, James Kit‐Hon; Matinlinna, Jukka Pekka; Pow, Ehn

doi:10.1016/j.prosdent.2015.02.024

Cited by 85 publications

(55 citation statements)

References 37 publications

(33 reference statements)

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“…In our study, the highest fracture strength of endocrowns were observed in TZI group (533.61 N for S, 610.54 N for L) which has the highest elasticity moduli and flexural strength, and the lowest values were found in VM2 (47.29 N for S, 71.38 N for L) groups, in accordance with the literatures by Leung et al 40) and Albero et al 41) . The reason for lower fracture strength values obtained in our study for all groups could be attributed to the differences in crown shape (incisor instead of molar) and the force axis (45 degrees angle instead of 90 degrees angle) used in this study.…”

Section: Discussionsupporting

confidence: 92%

“…The study which compared the mechanical properties of feldspathic ceramic (Vita Mark II), lithium disilicate reinforced glass ceramic (IPS e.max CAD) and polymer infiltrated ceramic (Vita Enamic) by three-point bending test, reported that lower flexural strength values were found for feldspathic ceramic (106.67±18.50 MPa) with respect to lithium disilicate reinforced glass ceramic (341.88±40.25 MPa) and polymer infiltrated ceramic (145.95±12.65 MPa) 40) . Similarly, Albero et al 41) reported that feldspathic ceramic (Vita Mark II) provided lower fracture strength values with respect to lithium disilicate reinforced glass ceramic (IPS e.max CAD), polymer infiltrated ceramic (Vita Enamic) and resin-ceramic (LAVA Ultimate).…”

Section: Discussionmentioning

confidence: 99%

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Fracture strengths of endocrown restorations fabricated with different preparation depths and CAD/CAM materials

et al. 2018

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The objectives of this study were to compare the fracture strength of endocrown restorations fabricated with different preparation depth and various CAD/CAM ceramics, and to assess the fracture types. Endodontically treated 100 extracted human permanent maxillary centrals were divided into two preparation depth groups as short (S: 3-mm-deep) and long (L: 6-mm-deep), then five ceramic subgroups, namely: feldspathic-ceramic (Vita Mark II-VM2), lithium-disilicate glass-ceramic (IPS e.max CAD-E.max), resin-ceramic (LAVA Ultimate-LU), polymer infiltrated ceramic (Vita Enamic-VE) and monoblock zirconia (inCoris TZI-TZI) (n=10/subgroup). The endocrowns were fabricated by CAD/CAM and were cemented with resin cement (RelyX U200). The teeth were thermally cycled (5,000cycles) and fracture tests were performed at 45º angle to the teeth. The data were statistically analyzed (Kruskal-Wallis, Mann Whitney U), failure modes were evaluated with stereomicroscopy. Zirconia group provided the statistically highest fracture strength, but also exhibited non-repairable failures. Preparation depth has an effect on the fracture strength only for feldspathic ceramic.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Fracture strengths of endocrown restorations fabricated with different preparation depths and CAD/CAM materials

et al. 2018

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“…The existence of the polymer phase within the ceramic framework spread the plasticity upon loading, hence increasing the crack resistance with crack extension. This could give a higher observable Weibull modulus, rather than toughening itself, resulting in a material with high m and moderate σ 0 7,9,11 .…”

Section: Discussionmentioning

confidence: 99%

“…polymer-infiltrated ceramic-network (Enamic) and nanoparticle and nanocluster-filled resin (Lava Ultimate Restorative)]. Although these two materials exhibit smoother milled margins compared to ceramic-based blocks 3 , they present lower flexural modulus, fracture toughness, and flexural strength than glass-ceramic and ceramic materials 3,11,20 .…”

Section: Introductionmentioning

confidence: 99%

Reliability, failure probability, and strength of resin-based materials for CAD/CAM restorations

et al. 2016

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“…The reported mechanical properties of the three materials are listed in Table 2 (16)(17)(18)(19)(20). The schematic flow for the specimen preparation and wear test are shown in Fig.…”

Section: Specimen Preparationmentioning

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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Comparison of mechanical properties of three machinable ceramics with an experimental fluorophlogopite glass ceramic

Cited by 85 publications

References 37 publications

Fracture strengths of endocrown restorations fabricated with different preparation depths and CAD/CAM materials

Fracture strengths of endocrown restorations fabricated with different preparation depths and CAD/CAM materials

Reliability, failure probability, and strength of resin-based materials for CAD/CAM restorations

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

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