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Composite resin restorative dental materials designed to be used as plastic fillings for in situ restoration of the appearance, structure and/or function of a patient\'s teeth and require heat to activate polymerization. These composite restorative dental materials consist of a synthetic organic heat-polymerizable resin matrix in which a blend of particles (e.g., glass, quartz, silica) acting as fillers are dispersed. Heat-cured composite resin restorative dental materials are supplied in a single-paste system that is polymerized in situ by the application of heat. They are usually strong, durable, easy to manipulate and shape, and are placed in highly visible areas (e.g., the central incisors or any other teeth that can be seen when smiling) or in areas where conservation of tooth structure is a top priority. Heat-cured composite resin restorative dental materials are used in dentists\' offices.
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