Restoration materials of caries of the enamel and dentin

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The dentin and the enamel present different physical characteristics and, therefore, when restoring a tooth, a material should be chosen that can replace the lost tissue in the best possible manner. Glass ionomers have physical characteristics similar to those of dentin, and are therefore usually chosen to replace this tissue; this technique, commonly called the “sandwich” technique, uses composite resins to substitute the lost enamel. The composite resin is formed of ceramic particles in an organic matrix and, depending on the size and the relative proportion of the particles, provides similar physical characteristics to the enamel (35)(36).

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