CASE 6 Composite resin is a tooth coloured restorative material which is directly bonded to the tooth. It lasts well in low-medium stress bearing ares towards the front of the mouth where cosmetics is of paramount importance. It can be moderately successful in small to medium sized cavities on back teeth in most people. Composite resin is marginally more expensive to use than amalgam and more time consuming to place in a back tooth since it's placement demands a completely dry field free of contamination from saliva or exudate seen when there is a "gum" problem present.