Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

In-Vitro Contact Wear of Dental Composites



V S. Nagarajan, S Jahanmir, V P. Thompson


Three commercial dental composites with filler loading of 75-76 wt% were evaluated. The wear results were compared with those reported in an earlier study on a highly filled composite containing predominately alumino-silicate glass fillers and alumina at a filler loading of 92 wt%. The differences in wear rates between the three medium filled composites were not statistically significant indicating that the variations in filler particle size and slight differences in chemical composition of the glass fillers do not affect the wear rates of these composites. Wear rates of the medium filled composites, however, were significantly lower than the highly filled composite. WEM, FTIR and ICP-MS analyses suggested that wear in the medium filled composites occurs by a complex set of processes involving formation of surface films by tribochemical reactions and film detachment by microfracture as well as dissolution of the reaction products.
Dental Materials Congress
No. 1


dental composites, dental restorations, microstructure, wear


Nagarajan, V. , Jahanmir, S. and Thompson, V. (2004), In-Vitro Contact Wear of Dental Composites, Dental Materials Congress (Accessed June 23, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created January 1, 2004, Updated February 19, 2017