This material is a mix of acrylic resin and powdered glass-like particles. It can be used in front and back teeth to create natural-looking teeth. It has a low risk of leakage when bonded to enamel, but its bond strength is less when it is placed on or near the root where there is less or no enamel. It is strong and lasting in small-to-medium preparations. In comparison to amalgam fillings, composite fillings have a more natural appearance, cost more, are less strong against chewing forces, do not last as long as amalgam, and have a higher incidence of sensitivity following placement.