Traditional dental restoratives, or fillings, include gold, porcelain, and composite. The strength and durability of traditional dental materials make them useful for situations where restored teeth must withstand extreme forces that result from chewing, such as in the back of the mouth. Newer dental fillings include ceramic and plastic compounds that mimic the appearance of natural teeth. These compounds, often called composite resins, are usually used on the front teeth where a natural appearance is important, but they can also be used on the back teeth depending on the location and extent of the tooth decay.