Composite fillings are plastic restorations that are also placed in one appointment. The advantage of composite restorations is their color. Disadvantages include breakdown of a bond to the tooth with time, they wear faster than other restorations, and are very technique sensitive to place to achieve good contours and contact with adjacent teeth. Whenever possible, a dental rubber dam should be used when placing composites to prevent contamination from the humidity and saliva in the mouth. When we see new patients to our practice, we see a higher failure rate of composite restorations than the other choices. However, often this is related to the fact the previous composite restorations were not placed using the rubber dam. We find that composite restorations hold up very well on front teeth but on back teeth, silver amalgam, porcelain or gold may be a better choice.