An inert material added to resin composite to increase strength and abrasion resistance. Filler particles are usually composed of quartz or glasses containing barium or strontium (added to give the resin radiopacity). Fillers provide a means of controlling various aesthetic features such as colour, translucency, and fluorescence. The filler particles may be large (macrofilled), small ( microfilled or nanofilled), or a mixture of both ( hybrid). See also resin composite.
Subjects: Archaeology — Dentistry.