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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

The effect of restorative materials on the wear of human enamel.

The wear of human dental enamel against amalgam, Concise composite, SR-Isosit Inlay/Onlay composite, Vitadur-N glazed porcelain, unglazed IPS Empress ceramic, and enamel (control) was investigated by use of a modified stress cycling machine. Testing was carried out in water and in citric acid (pH 4) and the enamel-material couples were subjected to 25,000 cycles of wear with a maximum load of 40 N. Tooth profile reduction was measured at baseline and at 5000 cyclic intervals with a computer image analysis program. The depth of the wear scars on material specimens was analyzed with a profilometer. All materials produced increased enamel wear in acid. Vitadur-N glazed porcelain was found to be the most destructive to human dental enamel, and this was closely followed by Empress and enamel.[1]


  1. The effect of restorative materials on the wear of human enamel. Ratledge, D.K., Smith, B.G., Wilson, R.F. The Journal of prosthetic dentistry. (1994) [Pubmed]
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