Tribological behaviour of unveneered and veneered lithium disilicate dental material

Journal of the Mechanical Behavior of Biomedical Materials
C G Figueiredo-PinaM Guedes

Abstract

The friction and wear behaviour of a lithium disilicate dental ceramic against natural dental enamel is studied, including the effect of the presence of a fluorapatite veneering upon the tribological properties of the material. The tribological behaviour was assessed using reciprocating pin-on-plate test configuration, at pH 3 and pH 7. The surface energy of the plates was determined, as well as the zeta potential of fluorapatite, lithium disilicate and enamel particles in artificial saliva. It was found that the friction and wear behaviour of the tested enamel/plate material tribocouples is less severe in unveneered plates. Initial surface roughness of the plate does not affect wear results. However the topography of the resulting wear track affects the corresponding wear loss: a smoother final wear track is associated with lower wear. The surface topography of the wear track, and thus the tribological performance of the tested materials, is very sensitive to the pH of the sliding solution. This is because the dissolution trend, wettability and surface charge of the used materials are pH dependent. Overall friction and wear are higher under basic pH conditions, especially when plates are veneered. A wear model is proposed that...Continue Reading

References

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Oct 30, 2010·Journal of Esthetic and Restorative Dentistry : Official Publication of the American Academy of Esthetic Dentistry ... [et Al.]·Robert G Ritter
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Citations

Sep 17, 2016·International Journal of Dentistry·Fernando ZaroneRoberto Sorrentino
Dec 20, 2019·Journal of Esthetic and Restorative Dentistry : Official Publication of the American Academy of Esthetic Dentistry ... [et Al.]·Jean S MirandaEstevão T Kimpara
Jul 6, 2019·BMC Oral Health·Fernando ZaroneRoberto Sorrentino
Nov 10, 2020·Microscopy Research and Technique·Koray SoygunGiray Bolayir
Apr 6, 2019·Dental Materials : Official Publication of the Academy of Dental Materials·Raquel GalanteAna Paula Serro
Oct 9, 2021·Journal of Esthetic and Restorative Dentistry : Official Publication of the American Academy of Esthetic Dentistry ... [et Al.]·Yasamin R M AljomardHaluk Barış Kara

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