The in vitro accelerated aging of conventional and microfilled composite restorative materials and a sealant was studied. Volume loss/surface area ranged from 2.0 to 7.3 x 10-3 mm3/mm2 after 900 h of aging. Surface morphology changed more dramatically for the conventional composites than for the other materials. Changes in surface chemistry as measured by FTIR-ATR were observed.
Get full access to this article
View all access options for this article.
References
1.
Powers, J.M. and Fan, P.L.: Erosion of Composite Resins , J Dent Res59:815-819, 1980.
2.
O'Brien, W.J. and Yee, J., Jr.: Microstructure of Posterior Restorations of Composite Resin After Clinical Wear, Operative Dentistry5: 90-94, 1980.
3.
Powers, J.M. ; Dennison, J.B.; and Koran, A.: Color Stability of Restorative Resins Under Accelerated Aging, J Dent Res57: 964-970, 1978.
4.
Fan, P.L. and Powers, J.M.: In vitro Wear of Aged Composite Restorative Materials, J Dent Res59:2066-2070, 1980 .
5.
Fan, P.L. ; Powers, J.M.; and Craig, R.G.: In vitro Wear of Microfilled and Visible Light-cured Composites, J Dent Res58:2116-2119, 1979.
6.
Dennison, J.B. ; Powers, J.M.; and Char-Beneau , G.T.: Measurement of in vivo Wear on Posterior Composite Restorations, AADR Progr & Abst59:No. 202, 1980.
7.
Rootare, J.M. ; Powers, J.M.; and Craig, R.G.: Wear of Composites by Abrasives of Varying Hardness, J Dent Res58:1097-1100, 1979 .
