Coefficient of friction of prosthetic tooth materials

Koran, A.; Craig, Robert G.; Tillitson, E.W.

doi:10.1016/0022-3913(72)90034-0

Cited by 31 publications

(16 citation statements)

References 3 publications

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“…The choice of a hard WC indenter is simply to enable multiple testing without the need for test-by-test replacement of the indenter. Our results might be modified in saliva which is known to reduce the friction coefficient between the slider and the ceramic surface (Koran et al, 1972). Further investigation into the effect of saliva is warranted.…”

Section: Discussionmentioning

confidence: 99%

Sliding Contact Fatigue Damage in Layered Ceramic Structures

Kim

Thompson

2007

J Dent Res

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Porcelain veneered restorations often chip and fracture from repeated occlusal loading, making fatigue studies relevant. Most fatigue studies are limited to uniaxial loading without sliding motion. We hypothesize that biaxial loading (contact-load-slide-liftoff, simulating a masticatory cycle) as compared to uniaxial loading accelerates the fatigue of layered ceramics. Monolithic glass plates were epoxy joined to polycarbonate substrates as a transparent model for an allceramic crown on dentin. Uniaxial and biaxial cyclic contact was applied through a hard sphere in water with a mouth-motion machine. The uniaxial (contact-load-hold-liftoff) and traditional Rratio fatigue (indenter never leaves the specimen surface) produced a similar lifespan, while biaxial fatigue was more severe. The accelerated crack growth rate in biaxial fatigue is attributed to enhanced tensile stresses at the trailing edges of a moving indenter. Fracture mechanics descriptions for damage evolution in brittle materials loaded repeatedly with a sliding sphere are provided. Clinical relevance is addressed.

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Section: Discussionmentioning

confidence: 99%

Sliding Contact Fatigue Damage in Layered Ceramic Structures

Kim

Thompson

2007

J Dent Res

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“…This is very important, as the presence of ceramic crowns can change the process of wear between natural teeth . Research into friction forces and their coefficients began in the 1970s, using very simple equipment and techniques . These assays have been much improved in recent years, with the advent of new and more reliable equipment, and their utility in the study of dental materials, particularly ceramics, is firmly established …”

mentioning

confidence: 99%

Wear Potential of Dental Ceramics and its Relationship with Microhardness and Coefficient of Friction

Freddo

Kapczinski

Kinast

et al. 2015

Journal of Prosthodontics

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“…Koran et al18 stated that a high load and sliding speed during mastication increases the coefficient of friction, inducing greater wear. The restoration in the present case was located in molar area, which has a high chewing force, and an occlusal pattern close to a BBO may have induced the exertion of force accompanied by sliding movement.…”

Section: Discussionmentioning

confidence: 99%

Metal stain on monolithic zirconia restoration: A case report

et al. 2017

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In restorative treatment using fixed dental prostheses, dentists should select appropriate restoration material among various types of dental materials. The strength, marginal fit, esthetics, wear resistance, biocompatibility, and cost are important factors in the choice of restoration materials. The present case showed a surface stain on a monolithic zirconia restoration that was due to wear between the monolithic zirconia restoration and the base metal alloy restoration. This phenomenon was confirmed by surface roughness measurement and electron probe micro-analysis.

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Coefficient of friction of prosthetic tooth materials

Cited by 31 publications

References 3 publications

Sliding Contact Fatigue Damage in Layered Ceramic Structures

Sliding Contact Fatigue Damage in Layered Ceramic Structures

Wear Potential of Dental Ceramics and its Relationship with Microhardness and Coefficient of Friction

Metal stain on monolithic zirconia restoration: A case report

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