Friction and wear behaviors of dental ceramics against natural tooth enamel

Wang, Lin; Liu, Yihong; Si, Wenjie; Feng, Hailan; Tao, Yuan; Ma, Zhenqiang

doi:10.1016/j.jeurceramsoc.2012.03.021

Cited by 111 publications

(141 citation statements)

References 20 publications

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“…However, there is some evidence that the roughness of a cusp sliding on enamel can influence the coefficient of friction. For example, the results of Wang et al [33] show that when a flat enamel surface was opposed by a zirconia ball, polished surface recorded a lower coefficient of friction than that for a sintered rough surface.…”

Section: Wear Mechanismsmentioning

confidence: 99%

An in vitro study of the wear mechanism of a leucite glass dental ceramic

Arsecularatne

Dingeldein

Hoffman

2015

Biosurface and Biotribology

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Ceramics and glass-ceramics are materials of choice for dental crowns due to their attractive hardness, biocompatibility, etc. However, a major problem with their usage is the observed high wear of either the opposing dental enamel or both the enamel and ceramic itself. Although these issues have been known for some time, the responsible wear mechanism(s) are not clearly identified. Accordingly, an in vitro investigation was undertaken to identify the mechanism(s) responsible for the wear of a popular leucite glass-ceramic (LGC) dental prosthesis material when opposing both itself and human dental enamel.Reciprocating sliding wear tests were carried out with LGC or enamel cusp sliding on LGC flat-surface samples with varying surface roughness. The wear loss was quantified using profilometry and the wear scar surface and subsurface were analysed using electron microscopy techniques to reveal the underlying wear mechanism.The present results revealed that the dominant wear mechanism for LGC, when opposed by LGC or enamel, was micro-abrasion due to lateral crack formation/extension. Leucite crystals in the ceramic's microstructure appear to act as hard asperities and their loading/unloading during sliding contact caused the formation and extension of lateral cracks and, consequently, wear of the LGC dental material. For human enamel, the dominant wear mechanism was delamination. & 2015 Southwest Jiaotong University. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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Section: Wear Mechanismsmentioning

confidence: 99%

An in vitro study of the wear mechanism of a leucite glass dental ceramic

Arsecularatne

Dingeldein

Hoffman

2015

Biosurface and Biotribology

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“…[5,6] Zirconia-based ceramics are among the most popular and the most widely used ceramics in the modern dental practice. [7,8] This can be attributed to their superior mechanical properties [7][8][9][10] and excellent biocompatibility [9,[11][12][13] comparable to other dental ceramics.…”

Section: Introductionmentioning

confidence: 99%

Effect of artificial accelerated aging on surface roughness and color stability of different ceramic restorations

Hamza¹,

Alameldin²,

Elkouedi³

et al. 2017

SDS

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“…Flexural strength above 500 MPa and fracture toughness ranging from 2.3 to 3.3 MPa·m ½ can thus be achieved (Holand and Beall, 2012;Höland et al, 2009;Kang et al, 2013). Since the rigidity and strength of lithium disilicate are much higher than that of natural enamel, problems raise concerning damage of natural teeth by excessive wear and/or stress concentration caused by mechanical mismatch between the dental material and teeth (Wang et al, 2012). Teeth are submitted to the forces associated with mastication and to the chemical and thermal aggressive environment of the oral cavity.…”

Section: Introductionmentioning

confidence: 99%