A crown is an artificial tooth used to replace a weakened tooth in case of attrition, root canal treatment etc. These can be made either of the following materials. Metal fused to porcelain (metal ceramic crown), only by porcelain (all ceramic crown), and the latest in tooth coloured is zirconia (strongest white material used) .

Bridge is used to replace the missing tooth with the support of adjacent tooth in fixed type of treatment. Above materials are utilized in manufacturing bridges