@article{9a68801e7526471f89034b4e019ecd0b,
title = "Wear of ceramic-based dental materials",
abstract = "An investigation is made of wear mechanisms in a suite of dental materials with a ceramic component and tooth enamel using a laboratory test that simulates clinically observable wear facets. A ball-on-3-specimen wear tester in a tetrahedral configuration with a rotating hard antagonist zirconia sphere is used to produce circular wear scars on polished surfaces of dental materials in artificial saliva. Images of the wear scars enable interpretation of wear mechanisms, and measurements of scar dimensions quantify wear rates. Rates are lowest for zirconia ceramics, highest for lithium disilicate, with feldspathic ceramic and ceramic–polymer composite intermediate. Examination of wear scars reveals surface debris, indicative of a mechanism of material removal at the microstructural level. Microplasticity and microcracking models account for mild and severe wear regions. Wear models are used to evaluate potential longevity for each dental material. It is demonstrated that controlled laboratory testing can identify and quantify wear susceptibility under conditions that reflect the essence of basic occlusal contact. In addition to causing severe material loss, wear damage can lead to premature tooth or prosthetic failure.",
keywords = "Dental ceramics, Enamel, Fracture, Micromechanics, Microstructure, Prostheses, Wear",
author = "Oscar Borrero-Lopez and Fernando Guiberteau and Yu Zhang and Lawn, {Brian R.}",
note = "Funding Information: Funding was provided by the Junta de Extremadura, Spain, FEDER/ERDF funds (grant No. IB16139), the U.S. National Institute of Dental and Craniofacial Research (Grant Nos. R01DE017925, R01DE026279 and R01DE026772), and the U.S. National Science Foundation (Grant No. CMMI-0758530). The authors wish to thank Michael Wendler for preparing specimens for wear testing, David Maestre for kindly providing tooth specimens from his clinic (Clinica David Maestre, Valverde de Leganes, Spain), Maria Carbajo (Facility of Analysis and Characterization of Solids and Surfaces, UEx, Badajoz, Spain) for assistance in collecting some of the SEM images in Figs. 2 and 5, and Jingxiang Yang for assistance in collecting some of the SEM images in Fig. 2. Funding Information: Funding was provided by the Junta de Extremadura, Spain, FEDER /ERDF funds (grant No. IB16139 ), the U.S. National Institute of Dental and Craniofacial Research (Grant Nos. R01DE017925 , R01DE026279 and R01DE026772 ), and the U.S. National Science Foundation (Grant No. CMMI-0758530 ). The authors wish to thank Michael Wendler for preparing specimens for wear testing, David Maestre for kindly providing tooth specimens from his clinic (Clinica David Maestre, Valverde de Leganes, Spain), Maria Carbajo (Facility of Analysis and Characterization of Solids and Surfaces, UEx, Badajoz, Spain) for assistance in collecting some of the SEM images in Figs. 2 and 5 , and Jingxiang Yang for assistance in collecting some of the SEM images in Fig. 2 . Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",
year = "2019",
month = apr,
doi = "10.1016/j.jmbbm.2019.01.009",
language = "English (US)",
volume = "92",
pages = "144--151",
journal = "Journal of the Mechanical Behavior of Biomedical Materials",
issn = "1751-6161",
publisher = "Elsevier BV",
}