Dental caries leading to cavities in teeth are the most common conditions affecting teeth. The standard treatment is to fill the cavity to prevent pain and to stop further deterioration. Filling of teeth cavities is one of the most common procedures in dentistry. There is a number of materials used for fillings. On the one hand there are silver mercury based fillings (amalgam fillings), plastic white fillings or composite fillings.
White fillings stick to tooth tissue and so are likely to last longer, whereas mercury-based fillings do not. In general white fillings require less drilling and therefore preserves more of the tooth.
In addition to filling of cavities composite fillings can be used for cosmetic purposes, such as reshaping teeth or closing gaps between teeth.