[Resin and glass-ionomer sealants. Indications, mechanism of action, and application technics]

The usefulness and indications to treatment with sealants in pedodontics are examined. Sealants are classified and the action mechanism of sealant resins and the application techniques needed for correct positioning of the material are described. The use of the new glass-ionomer cement sealants, with their advantages and disadvantages, are then discussed and the preventive and economic value of occlusive seals evaluated.