A composite material is provided which, while having an unusually high filler
content
may be extruded from a dental syringe and remains easily adaptable in the dental
cavity. When materials of the present invention are cured, dental restorations
are provided which have unusually high surface hardness and yield strength, as
well as a low volume shrinkage on curing. This is achieved by use of a mixture
of filler particles with a specific size, size range, and size relationship. Such
a combination of properties makes the material of the present invention particularly
useful for restoring cavities in posterior teeth.