In many countries, the caries process frequently
progresses beyond the reversible stage and many people
believe that loss of teeth is part of life. The main method of
treating dental caries is extraction. The need to develop a
new approach to oral care for use in economically less
developed regions was reinforced by the World Health
Organization (WHO). In 1994, during the annual meeting of
IADR165,156, the WHO recognized, endorsed and promotes
the technique dissemination allover the world39,40.