Cements and Ceramics

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Cements and ceramics are mainly inorganic, non-metallic, hydrophilic materials, which have been used in different dental applications for a long time. In this chapter, information on the composition, setting reaction and release of substances from these materials is provided as the basis for a detailed review of their mainly local toxicity. Besides zinc phosphate and glass ionomer cements, materials based on zinc oxide and eugenol and on calcium hydroxide are covered. Emphasis is placed on the influence of the biocompatibility on the choice of the material in each individual patient and on new and established bioactive materials; e.g. for dentin regeneration. For ceramics, conventional materials (feldspathic type) and more recently developed materials based on zircon dioxide are reviewed. The question of radioactive radiation of ceramics is also discussed.