Dental Filling Dental Fillings are used to repair minimal tooth fractures, tooth decay, or otherwise damaged surfaces of the teeth. Dental filling materials may be used to even out tooth surfaces for better biting or chewing. In many cases, individuals with enamel loss resulting in tooth sensitivity will notice a significant improvement or complete elimination of sensitivity once the appropriate dental filling material is placed. You have many choices when it comes to restoring damaged or decayed teeth, even down to the type of dental filling material to use. You may choose to have white "tooth-colored" fillings (composite or porcelain) or silver amalgam restorations. Composite Resins Composite Resins or Tooth-Colored Fillings, are a mixture of glass or quartz filler that provide good durability and resistance to fracture in small- to mid-size fillings that need to withstand moderate pressure from chewing. They can be used on either front or back teeth.