[Filling revision--possibilities and execution].

For the last years new techniques and materials have been developed and tested to make corrections or revisions of fillings, metallic and ceramic restorations possible, allowing a bond between these different surfaces with reasonable strength. Composite material is qualified as universal repair material. Cavities of composite and amalgam fillings have to be sandblasted intraorally with aluminum oxide powder. The pre-treatment and conditioning of enamel and dentin can be managed by conventional methods such as the total etch technique but they cannot produce adequate microretentive surfaces on metallic and ceramic restorations. Silica coating by intraoral sandblasting and silane application can stabilize a durable bond. Enamel and dentin are conditioned additionally by conventional methods. Durable success of repair does not depend on using the original filling material. Adhesive and composite, however, have to be customised. While sandblasting hygiene should be observed and preventive measures are obligatory.