Effect of abrasion medium on wear of stress-bearing composites and amalgam in vitro.
Measurements of in vitro wear for several composite materials and an amalgam were conducted using a new device in which contact stress, moving speed, mutual slip, and third-body composition could be set. This preliminary study reports the results obtained with a fixed choice of contact stress, speed, and slip, but with different third-body media. With a Millet-seed/PMMA-beads mixture as a medium, the various types of restoratives showed a wear pattern and relative ranking comparable with that reported in clinical studies.
De Gee
A J
AJ
Pallav
P
P
Davidson
C L
CL
D003188:Composite Resins; D003723:Dental Amalgam; D004867:Equipment Design; D008768:Methylmethacrylates; D008897:Panicum; D013193:Stainless Steel; D013314:Stress, Mechanical; D013499:Surface Properties; D014867:Water
D003188:Composite Resins; D008768:Methylmethacrylates; D014867:Water; D013193:Stainless Steel; D003723:Dental Amalgam